Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-26 Thread Archimago

Just invited the boys at ComputerAudiophile General Forum last night...

One stat I'll reveal - 100% male response. Would be amazing to get even
one lady respond!



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-26 Thread Archimago

ralphpnj wrote: 
 Perhaps ZZJolx's mom will take the test but first you have to add some
 Skynyrd samples :)

LOL Ralph. I'll remember that next time... :eek:



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-26 Thread Archimago

Julf wrote: 
 Interesting - that will test how good your masking is - if one of them
 figures out a way to tell the samples apart, they will all use that
 instead of actually listening (this based on a similar listening test I
 did over at CA at one point, that had to be stopped prematurely because
 one of the members spotted a way to tell the samples apart and posted it
 - that changes pretty much all the responses from that point on).

Wow. That sucks! Not cool...

Hopefully that doesn't happen.



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-26 Thread Archimago

Julf wrote: 
 You do realize that if your test is successful you will probably be
 banned? :)

Well... So be it if that is the case. How odd it is that in 2014, there
would even be controversy in using blind testing to empirically explore
thresholds of human perception. As if there's some kind of heretical
thinking going on here ;)

Speaking of heresy... I also left a response on the recent Audio Stream
article by Mike L. defending Pono against the evil Guardian inviting a
look at the test. Looks like Mr. Lavorgna is trying to play scientist /
reader of scientific literature now.



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Re: [SlimDevices: Audiophiles] An interesting article on vinyl vs digital.

2014-04-26 Thread Archimago

Indeed, I agree, overall a nice article. I like that little embedded
video talking about the limitations of vinyl mastering. Indeed that RIAA
curve is nasty and the old LP technology is full of compromises we have
taken for granted with the freedom of digital. (Makes issues like
jitter laughable!)

I think the main message about reminding the vinyl lovers that -LPs are
less accurate- than a -good -CD is an important one that is quite
clearly based in fact. Even though I do not own a turntable any more, a
number of friends have bought TT's in the last 3 years and I've had the
pleasure to listen to some excellent vinyl rigs as a result. They can
sound very good and obviously the experience of the physical object,
playback ritual, and large artwork can certainly provide a different
(and some would argue richer) experience.



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-25 Thread Archimago

Adam,

Since your friend did the test on the Goldberg already, tonight I just
did a null test on 'Bozza' and 'Vivaldi'. Looks fine to me with peak
amplitude differences at -90dB or so for both.



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-25 Thread Archimago

Mnyb wrote: 
 Should the results for goldberg be discarded if there is some kind
 bias aviable on some fora ?
 
 It can go either way ? but can it be relied on ?
 
 To counter this effect don't search to much on the net on this but
 simply take the test under natural listening konditions and contribute
 to the statistics .
 
 So if as many people as possible with a real intrest in the true result
 take the test honestly ,the result will be much better :)

Good point... Let me know if you guys see postings which would clearly
bias voters!



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-24 Thread Archimago

adamdea wrote: 
 If you subtract one file from the other, you would expect them to cancel
 out completely if identical. If they were identical down to the 16th
 bit, you would expect the -difference- to be limited to a signal at 16th
 bit level only ie nulling down to -90dB or so (the precise answer would
 depend on the sort of dither used..
 
 Actually someone whose judgment I trust has confirmed a null with the
 harpsichord [no it isn't it's a piano- what was I thinking of?] track
 down to -98dB. Anyway I was not wanting to encourage cheating, I was
 simply wanting to warn Archimago that someone (on whose judgment I had
 better not express an opinion) was alleging that there was a problem
 with the downconversion.

Thanks for the note Adam.

Myself and the beta-testers did consider scenarios such as this. Surely
you know we would try our best to keep the identity of the tracks hidden
as best we could without invalidating the test altogether - fine line
there but I think we did a good job...

Therefore, indeed, it is possible for the null test to show unexpected
results but that depends alot on other factors.

Great to see the responses so far! Just with the FTP site, 120
transfers of the file already. I of course do not expect that many
responses yet since there's plenty of time to listen, but I am impressed
by the quality of responses so far and the variety of gear people are
using! Clearly folks are not using junk gear to assess and the
majority are spending time listing out for me what they use and
subjective impressions. All will be revealed in time of course...

Keep the responses coming!



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-23 Thread Archimago

adamdea wrote: 
 I have posted a link to this test (mistakenly suggesting that it is
 16/44 vs 24/96 but i hope to be able to correct that) on Pinkfish. 
 It has been suggested on that site by someone that the two files do not
 null to the expected level. *Archimago could you possibly check*. As a
 matter of interest what program did you use for the downconversion?

Hi Adam.

As others have indicated, it's supposed to be a listening test and I
wonder if these members did the null subtraction analysis before or
after filling out the survey response?

There could be reasons why they're not seeing what they expect but I'm
not sure we should be talking about this at this time... I'll certainly
reveal all the technical details once the test is done including
settings and program used for conversion and dithering.

If this is the kind of discussion going on for a simple 24-bit vs.
16-bit test; could you imagine how impossible it would be to do a 44kHz
vs. 96kHz test! :mad:

Anecdotally, the other day I was reading the recent Stereophile magazine
and I came across the HDTracks ad that said You will hear the
difference (page 100). Firm message - as if it's that simple! Although
they refer to up to 24/192 (arguable need for 192kHz of course), it's
the kind of thing I hope this test will allow people to experience and
(as appropriate), question.

Good gradual accumulation of data I'm seeing. Hopefully people will stay
honest and use their ears.



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-21 Thread Archimago

Pascal Hibon wrote: 
 I just filled out the questionnaire... looking forward to the results.
 I have also posted the link on a Belgian audio forum and hope that many
 members will participate. 
 
 Another interesting test would be to compare CD quality to high res
 material.

Thanks Pascal!

Appreciate it :-).

The responses are coming in and it's good to see input from a number of
countries in Europe, US, and as far out as New Zealand...
Yup CD vs. high-res would be fantastic if there were only a way to
ensure that it was done blindly. I can imaging maybe a Windows/Mac/Linux
program where you could choose ABX where it would play 24/96 or 16/44
that's upsampled to 24/96 maybe so the DAC doesn't show the change in
resolution? The whole thing could be packaged in an executable so it
isn't tampered with easily?

Anyone heard of such a thing?



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-20 Thread Archimago

Just put in an invite to Audio Asylum... Many audiophiles hang out there
but it's not a big site either in terms of head count I suspect!



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-20 Thread Archimago

foxx wrote: 
 When I wrote 'spotted' I meant 'heard'.
 Certainly, I did take a look at file sizes and creation dates ... but
 those might be deliberately misleading. And I am missing more elaborate
 tools and the technical understanding to investigate any further.

Indeed I was aware of those factors as well, foxx :-)



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[SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-19 Thread Archimago

It's live :-). Simple question... Can you tell the difference between
24/96 and 16/96 (encapsulated in 24/96 container) audio? Is there merit
to 24-bit even necessary for home audio reproduction?

Thanks for some of you who participated on the beta test over the last
week.

Feel free to have audiophile friends give it a shot and let me know on
the survey site!

http://archimago.blogspot.ca/2014/04/internet-test-24-bit-vs-16-bit-audio.html

Happy Easter everyone.



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-19 Thread Archimago

BTW: Could someone invite Neil Young? Thanks. :cool:



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Re: [SlimDevices: Audiophiles] INTERNET TEST: 24-bit vs. 16-bit Audio Blind Test...

2014-04-19 Thread Archimago

JJZolx wrote: 
 Most audiophiles think ABX testing is worthless. Why would they want to
 ABX these samples? It's like telling an atheist to try praying to some
 god or another and seeing if they get any results.
 
 I'm also not sure what exactly the point would be of encoding them both
 at 24/96 when many people think that the 96 kHz encoding itself is
 detrimental to sound quality. That includes many audiophiles who prefer
 44.1 kHz.
 
 Good luck with this test. I imagine you'll get quite a few people who
 are already convinced that hi-res audio is a scam and will come back and
 confirm to you there's absolutely no difference.

Wow... When did many audiophiles prefer 44.1kHz and think 96kHz would
be detrimental!? Monty's well known page about 192kHz makes sense and
certainly you can get some intermodulation distortion with that much
overhead; but I think most reasonable audiophiles / engineers would
consider 96kHz about the sweet spot for maintaining high quality and
reasonable file size. The reason to keep at 96kHz is precisely because
that is the sweet spot IMO and most DACs measure exceptionally well with
that sample rate these days plus the effects of digital filtering is
reduced compared to 44/48kHz given that extra octave.

Well, as Wombat states, I do have a little more faith in humanity :-).

My interest is *not* as a proof to the audiophiles. To be honest, the
faithful are a small percentage and as you indicate, unlikely to change
(granted I know I've converted a few of them to the dark objective
side in the last year!). However, my sense is that those guys are
diminishing as a group. Each year that goes by, I think their influence
will diminish for many reasons I won't go into here. I'm more interested
in opening up a discussion and an opportunity to the folks just starting
to get into audio and the whole idea of high-resolution.

For now, the ship has sailed. The test has begun, and it's great to
see the detailed responses people have entered already. I hope this
provides an opportunity for those who are not as technical to experience
the difference for themselves and contribute to a body of data which
can at least try to answer whether larger file size, and higher expense
would be audibly beneficial.

---

Yes, the reason I would not do an Internet 44kHz vs. 96kHz test is that
it's way too easy to spot the difference. I have some faith in humanity;
but not *that* much :-). The only way to try something like that is with
controlled testing in one's home / listening room with test subjects.

As for advertising on other boards, I encourage folks to pass the site
around! I do go to other boards as well and over the weeks will put in
similar posts like this one... I figure we have 2 months. So as not to
hammer my FTP site, I figure I'll just let the visitors to the blog and
this forum have the first crack at it!



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Re: [SlimDevices: Audiophiles] TAS Reviews new Sony HAP-Z1ES player

2014-04-14 Thread Archimago

Great discussion guys...

I agree with Mnyb around the topic of measurements. Diffmaker
comparisons which null out pretty much tells us if there's any
difference at all. As for the idea of needing more and fancy tests,
well, of course there could be things to try... For example, on my blog
there's a suggestion to try 2fs (ie. 96kHz) jitter tests as opposed to
the standard 24-bit/48kHz one I'm using currently.

Hey, I'm sure that will show significant differences between DACs at
24kHz! Maybe a dog/cat can appreciate jitter up at that frequency... The
poster suggests that this makes an audible difference with 24/96 music.
I already have the test signal to do this but have not tried yet so will
withhold judgment.

Ultimately, it boils down to audiophiles (and the press) accepting that
if we're really going to get anywhere, double blind listening tests are
essential. Yet no magazine does this. If anything, audiophiles look for
every possible angle to debunk or invalidate testing which is
acceptable to every other scientific discipline I know of that deals
with human perception or biological effect. Show me double blind test
results where listeners are able to discern differences between DACs,
cables, etc... AND where standard measurements cannot explain these
differences. Then we can at least consider what other tests need to be
devised because then we can say with some certainty that we're missing
something.

---

Ralph:
I think you're right about the assessment on JA. While I appreciate his
work on objective measurements, there is at times a clear bias as to how
he interprets the results. Mediocre results from an inexpensive / not
well regarded brand will get used to explain inadequacies. Mediocre
results of expensive / well regarded brand / well advertised products
often gets tossed aside as I can't explain why Mr. Subjective loved the
sound... Perhaps it's exactly because it measures like this! (For an
example, have a look at his conclusion of Audio Note's CD-4.1x CD player
- awful noise floor, waveform reproduction, even terrible jitter.)

JA is a businessman after all... Yes, always worth reading these rags
with this fact in mind.



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Re: [SlimDevices: Audiophiles] TAS Reviews new Sony HAP-Z1ES player

2014-04-14 Thread Archimago

Mnyb:
Yes, Channel Classics is deep into the audiophile hardware kool-aid.
However, the recordings are still good and I can enjoy both the DSD and
PCM conversions.

Funny thing was about a month ago I E-mailed them that the 24/192
version provided no benefit due to use of Saracon (which they confirmed
they used). The proprietor still felt 192kHz was better despite the
lack of any content 48kHz. Oh well...



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Re: [SlimDevices: Audiophiles] TAS Reviews new Sony HAP-Z1ES player

2014-04-13 Thread Archimago

Good discussion boys and I don't think there is a need to fight over
this either... Whatever works is fine. High-res formats are already
capable of retaining accuracy enough for anyone's needs and the
limitations of the recording studio. The issue here is nothing even
close to measurable and audible differences between digital vs. vinyl!

I agree with keeping the original modulation technique - Channel
Classics albums started life as DSD with minimal studio manipulation I
am told, so I'm happy to keep a copy as DSD files in my archives since
that's the best they get. Based on objective measures though, I feel no
harm was done when converted to 24/88 for the DACs that cannot handle
DSD so I have that version on my LMS server as well (the PCM version
also has the benefit of digital room correction).

I think Mnyb has a point with too many formats though... It just
fragments the market, confuses the consumer, and creates unnecessary
disappointment. Despite the advertising push into high-res HRA, I
truly feel that there's just not going to be much of a market because
the average consumer will not hear a difference and move along... This
is *nothing* like the obvious benefits of DVD vs. Blu-Ray if people are
searching for an analogy. With a small consumer base (ie. obsessive
audiophiles who want the best version of their favourite album), it
makes sense to aim for standardization.



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Re: [SlimDevices: Audiophiles] Excited about Jolida Glass FX Tube DAC III

2014-04-12 Thread Archimago

dhallag wrote: 
 haha...  good different or bad different?

Well... That depends if you believe non-flat frequency response and
harmonic distortion could result in euphonic outcome. They very well
could and I certainly didn't think the DACs sounded bad. I didn't like
the Eastern Electric MinMax tube stage as much as the solid state
because the noise level was clearly inferior at higher volumes. The
MinMax is interesting in that it allows mode switching and so allows the
listener to judge for him/herself. 

In all seriousness though. I hope you enjoy the new DAC and tell us what
you think! I haven't heard Jolida gear in awhile, the last time was 5
years ago on an Asian trip and whatever model tube amp it was sounded
very good.



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Re: [SlimDevices: Audiophiles] Excited about Jolida Glass FX Tube DAC III

2014-04-12 Thread Archimago

dhallag wrote: 
 I also saw the Touch Transport numbers and I was so happy to see that
 there are no audible differences between USB/Coax/Toslink.  (The more
 and more I learn about the Touch), the more impressed I am with this
 technology.  So your point is sound on how the Jolida will handle Coax,
 Toslink or USB may make a difference.  I don't know if I am going to
 actually have 192/24 music -- right now I only have one album here. 
 Since the difference between 192/24 and 96/24 is ultrasonic, I don't see
 a need here.  
 
 What I was really surprised about was the measurements of the Analog RCA
 Connects: 
 http://archimago.blogspot.ca/2013/05/measurements-analogue-rca-interconnects.html
 I figured there would be an audible difference and maybe to some it
 would, but based this, I imagine that for most, there isn't an audible
 difference.  
 
 Overall, I am very happy to know scientifically that as long as you have
 a shielded cable, that's all you really need and thus no need to waste
 money on cables.  Much appreciated the advise to read Archimago's
 measurements.

A pleasure, dhallag.

Many moons ago, I was very much influenced by purely subjective reviews
and suggestions. I remember being entranced by the green CD pen,
captivated by the theories around Peter Belt's remarkable foil, and
all manner of audiophile tweaks... Yes, including the various cables;
making and testing many of my own.

But I did take to heart the suggestion to find out yourself during one
of these forum debates - but of course not as the guy suggested (ie.
spending ridiculous $$$ on buying and listening to crazy expensive power
cables, USB cables, and the like to gather experience with the
esoterica - that would never settle anything!). The blog in many ways is
a personal testimony of that journey out of a purely subjective mindset
using what I had around the house (an unused E-MU0404 as ADC) and
software freely available on the Internet. While I don't claim authority
in definite answers based on just the tests, I do insist during
discussions and debates that the other side show me what evidence they
have beyond vague impressions. I try to keep my mind open and am totally
willing to change my viewpoint if there is reason and evidence.

Now as for the Touch - yes, amazing technology for the price! Bar none
the best value for the money I have spent on audio gear. The thing that
really blew me away was when I tested that TosLink output with EDO
firmware and discovered it worked with my ASUS Essence One DAC at
*24/192*... I had never come across this before and I think this speaks
to the quality of the parts and the design.

Enjoy the hobby!



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Re: [SlimDevices: Audiophiles] TAS Reviews new Sony HAP-Z1ES player

2014-04-11 Thread Archimago

Interesting comment Firedog. I have not heard the Sony but will
certainly give it a try when I'm next at the dealer.

As one who has been buying SACDs since about 2001, ripping my SACDs
since 2012, having played with PCM -- DSD conversions like with JRiver
upsampling, and have some experience with the whole PCM -- DSD
conversion process (see the 'post on my blog this week'
(http://archimago.blogspot.ca/2014/04/analysis-comparison-of-dsd-encoders.html)),
I personally do not feel DSD adds anything special to sound quality. A
well done 24/96 (especially multichannel!) is as good as anything I've
heard from DSD over the years...

As suggested by the conversion results on the blog post, I'm quite happy
with 24/88 conversions of DSD64. Accuracy is excellent so the math is
good! In fact, mainly for convenience and space savings, I only bother
keeping about 20 of my SACDs as DSD on my server mainly as demos for
friends who want to have a listen. The rest I keep as 24/88 for
streaming to the Transporter.

I suppose one could argue for the high sampling rate of DSD (temporal
resolution of things like impulse responses) and filter difference, I'm
not one who has experienced or believe that they make much difference
ultimately compared to a good upsampling linear phase PCM filter.

firedog wrote: 
 ... BTW, if you haven't heard a native DSD recording of acoustic
 instruments, you might be amazed at how good it sounds. I have a couple
 of native DSD orchestral recordings that simply are the best sounding
 recordings I've ever heard of a symphony orchestra. Period.

Can you tell us which recording you're referring to here? I would
certainly love to have a listen... Maybe even try resampling to PCM to
see whether I hear a difference.



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Re: [SlimDevices: Audiophiles] Excited about Jolida Glass FX Tube DAC III

2014-04-11 Thread Archimago

dhallag wrote: 
 Here is a review and thread about the new Jolida Glass FX Tube DAC III.
 
 http://www.hifiwigwam.com/showthread.php?98652-Jolida-Glass-FX-Tube-DAC-III
 
 I've ordered one and wanted to share my excitement.

Enjoy...

I've hear 2 DACs with tubes. An Eastern Electric one switchable between
tube and solid state and a Wrightmod Oppo BDP-105.

Wondering what the tube-DAC-loving folks are hoping to achieve. I
actually got a chance to measure the Wrightmod unit but never got around
to posting the results... Mainly because I wasn't sure the measurements
were done right or if there was an issue with that unit. The tube output
stage certainly made things sound (and measure) different!



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Re: [SlimDevices: Audiophiles] Squeezebox Touch with Boulder Cable Mod

2014-04-09 Thread Archimago

I have heard the power supply (or at least a similar Boulder supply)
paired with a SB3 a number of years back before a friend sold it off.

I could never tell a difference but of course the SB3's analogue out is
not as good as the Touch.

As a digital source, it would not make sense to me how this could impact
quality of the digital stream out of the Touch.



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Re: [SlimDevices: Audiophiles] Need a little help from the experts...

2014-04-03 Thread Archimago

dhallag wrote: 
 
 -  I'm running LMS on my QNAP NAS.  That was my first change.  Since I
 did that, everything seems to move faster -- the GUI on the Duet
 controller and Touch.  Plus the songs load faster so I love this change.
 It's got a 1.6Ghz CPU with 512DDRIII so I believe that is powerful
 enough, yes?
 

Looking at the QNAP site, it looks like the typical processor they use
is something along the lines of Marvell's Feroceon 88F6282 at 1.6 GHz.
This is a single core ARM processor. To get a speed comparison, if you
look at the Linux BogoMips rating, this processor gets something like
1600.

This is equivalent to about a Celeron M @800MHz.

As you can imagine, that's not a high level of performance. Good to hear
that 24/192 transcoding to the Touch worked ok through the powerline
though which is good. However, it looks like there's not much extra
headroom for simultaneous streams. You could also try taking out the
Receiver and use SqueezePlay on the computer as a simulation of a
second Touch to check for dropouts.



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Re: [SlimDevices: Audiophiles] Worth reading

2014-04-02 Thread Archimago

Nice! Interesting blog...

Impressed that in the UK at least, there's some demand for accuracy and
the UK Advertising Authority is calling on a ban of Sony's stair
stepped ad :-)
http://www.mcelhearn.com/sonys-web-content-claiming-high-resolution-music-sounds-better-than-cds-banned-in-uk-for-false-claims/



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Re: [SlimDevices: Audiophiles] Need a little help from the experts...

2014-04-02 Thread Archimago

dhallag wrote: 
 
 With the advent of more sources offering 96/24 and 192/24 offerings
 (HDTracks and Youngs new Pono music), I'm starting to have more music
 that is at least 96/24.  The Touch has no problem handing the 96/24 and
 192/24, but the SB receiver does --- it does play them, but I get a lot
 of drop outs.

Yes, looks like the Receiver is your weak link... Some good discussion
and suggestions already.

However I am curious about the drop outs you speak of. What computer are
you using to run LMS on? Is it too slow to do the real-time conversion
of hi-res files thus causing the drop outs? Are you running wireless /
wired?



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-28 Thread Archimago

darrenyeats wrote: 
 I hated every multi-channel experience I've had so far. But that's just
 my opinion.
 
 Having had some surprisingly immersive 2 channel experiences, it seems
 multi-channel is the wrong solution to a problem of flat-sounding 2
 channel systems.

As with everything, YMMV applies.

Although a fantastic stereo recording with an excellent system could
portray a great surround image, it's certainly not the same experience
for me compared to discrete surround. With the latitude for more precise
imaging and freedom from being at the sweet spot (and able to move/turn
one's head without the 3D imaging collapsing!), I'd say it's a
solution that outstrips the capabilities of 2-channel sound. Maybe not
ideal, but the best one we have currently... 

As a practical observation, during demos for friends/family, I don't
believe anyone has requested to go back to 2-channel stereo after
hearing a good multichannel mix over the years. And of course, there are
many multichannel mixes I detest and would prefer the stereo mix (eg.
Neil Young's Harvest).



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-28 Thread Archimago

mlsstl wrote: 
 
 I believe the same will be true if multichannel becomes the defacto
 standard. The urge to use trendy effects will be irresistible. The
 capability for improved realism will be considered far too boring for
 many recordings and we'll be back to where were are with CDs today and
 LPs in the past -- a small percentage of absolutely magical recordings,
 a somewhat larger number of horrid recordings, and a whole bunch of
 mediocrity.

Nicely put!

Of course, I doubt many of us believes multichannel will ever become a
standard for music releases... I don't mind the funky surround effects
if it fits the music (eg. electronica, pop) but that would be awful in
acoustic music meant to be natural.



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-28 Thread Archimago

jfo wrote: 
 I have been checking out the AIX site. How are you playing the 5.1's?
 Downloading and burning to DVD?

5 options I see:
1. Author to DVD - but you would need to convert the surround sound to
Dolby Digital or DTS. This would be lossy and lose the high resolution
benefits.

2. Author to DVD-A - will handle native 5.1 24/96 with lossless MLP
(Meridian Lossless Packing) compression.

3. Author to Blu-Ray - like #2 above but will handle multichannel
24/192+... Could get expensive depending on media costs!

4. Play off your computer's surround analogue outputs to surround
receiver/preamp - sound quality compromised with most motherboard sound
but one could buy a better sound card.

5. (Best solution) Play off computer HDMI output to a surround
decoder/receiver. This is what I do. foobar and JRiver recognizes my
Onkyo receiver over the HDMI cable and will play the multichannel audio
natively.

I haven't bothered to author DVD or DVD-A for years. Blu-Ray burning
would be a waste since even a single layer disk can store 25GB; too much
for just audio unless you have something like 10 surround albums you
want on 1 disk.

The only thing I have not tried is playing multichannel DSD through my
receiver which I think is not a good solution since almost all audio
processing like bass management happens in PCM so a conversion step from
DSD - PCM is almost assured.



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-27 Thread Archimago

Mnyb wrote: 
 Well should not audiophiles be used to boring :) see all this audiophile
 music .
 
 just this track or do you plan to have more tracks ? ( with more
 instruments ) .
 
 . the 16bit version , is the algorithm you use transparent ? So that you
 don't get false positives.
 
 A popular sub genre is server upsampling with weird fillter settings
 and claims that the sound is improved

I'd love to add another track with some more instruments - an orchestral
piece would be lovely... Again, I prefer something free. I'll see
about contacting Mark W. about something from AIX. Ideally music similar
to that Open Goldberg would be amazing as a piece of music that's easily
available and (hopefully) recognizable as something accepted as
high-resolution in origin.

The dithering algorithm will be MBIT+ from iZotope RX 3. I find it
transparent. It's proprietary, noise shaped and I've heard many pros
preferring it to the usual TPDF... Although I suspect TPDF would be
fine!



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-26 Thread Archimago

Julf wrote: 
 Proper dithering should do it.

Absolutely - will use iZotope RX 3 MBIT+.



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Re: [SlimDevices: Audiophiles] Is this some kind of Sony magic?

2014-03-26 Thread Archimago

Guys, I feel like we're in some kind of audio time warp...

We rehash PCM 24/192 for the on-line world (DVD-A -- HDTracks) starting
~2009
We rehash DSD64 for the on-line world (SACD -- DSD64 downloads)
starting ~2012
We now rehash the *super tweeter* in concert with the hi-res experience
in 2014...

I have a sneaking suspicion that this will all commercially fail much
faster than the 1st time round in the early 2000's. At least back then
things *felt* new with the hi-res formats giving genuine excitement and
early adopters had a chance to experience it all for themselves. (Maybe
Pono will be the poster child come end of year?)

The only thing left after this round of push into high-res to squeeze as
much as they can from the consumer with old music is to bite the bullet
and admit all that really matter is how well music is recorded and
mastered in the first place. Maybe then we can get somewhere fresh with
truly high quality audio rather than DR7 HDTracks releases in 24/96...

Of course I could be totally wrong and by this time next year, everybody
and their grandma will be talking about how great Pono is, Neil Young
becomes a billionaire, and Blue Coast Records expanding their DSD
servers with audiophiles clamouring for more!



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-26 Thread Archimago

Peiter wrote: 
 I know music is a matter of personal taste, but man ... Goldberg
 Variations BWV 988 is borring.

:-)

Boring or not, I just want audiophiles to test if they can really tell
the difference between 24-bit and 16-bit. (As many claim they can!)



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-25 Thread Archimago

bz31 wrote: 
 http://www.opengoldbergvariations.org/

Thanks for the input guys!

Thanks bz31 for the Goldberg Variation suggestion... This looks and
sounds very good. Furthermore, being public domain with good background
on the provenance of the recording, I think this one would be a
fantastic test case.

Do you guys agree that a good acoustic piano recording which is
available as 24/96 would be a good one to unleash to the public for a
test of 16 vs. 24-bits.

Note that I will upconvert the 16-bit version back to 24-bits for the
test plus maybe a few tweaks to help disguise the files from simple
16-bit detector programs :-).

Could be fun!



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-23 Thread Archimago

Mnyb wrote: 
 Mark Waldrep is his name .
 
 Free files http://itrax.com/Pages/ArticleDetails.php?aID=44
 
 You probably have to ask if he would be cool with you resampling and
 redistribute .
 
 What can be sure of with AIX records is that the music is recorded in
 hirez at the source ie AD conversion and all editing is done in the
 highest resolution , some other offerings can have limitations in the
 chain somewhere analog for example .
 Edit : or some flavour of DSD can be a limitation , the SACD is at best
 20 bits ( worse in higher frequency ) but some of the never DSD formats
 can exceed that and performs better .

Thanks for reminding me about iTrax and Mark Waldrep. Might give it a go
later after vacation with the family.

I checked out Mark's Real-HD blog - lots of commentary on the last
couple weeks of Pono coverage!
http://www.realhd-audio.com/?cat=45



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Audioengine D3 mini USB DAC / headphone amp.

2014-03-22 Thread Archimago

Mnyb wrote: 
 Nice little thing , wonder how it would fare with squeezelite on one of
 those plug computer cubie boxes or RasPI or wandboard and whatnot , you
 may have to get an 3,5mm headphone to RCA cable buts that's trivial .
 That there is no need for extra drivers makes it promising for Linux
 support .
 
 I'll bet someone's already doing this but I've missed that post :)

Yup. Good question. In a future post I'll put up some measurements of
this thing being run off my Nexus 7 tablet. Given that this can be done
with Android, no reason why not full Linux.



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[SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-22 Thread Archimago

Hi guys.

Read something funny on TAS yesterday. So wanted to try another test...

Can anyone recommend a FREE, well recorded piece of music which *should*
demonstrate the superiority of 24-bit audio that I can chop up /
manipulate / post for a future on-line audio test?

Just don't want to run into any copyright issues... :-)



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Re: [SlimDevices: Audiophiles] Need advice: Good FREE 24-bit music recording?

2014-03-22 Thread Archimago

marflao wrote: 
 Can't you use one of the free 24bit downloads at the 2L webpage? Or
 won't that work for your project? ;-) 
 Btw.. many thanks for your splendid tests. I really enjoy them every
 time. 
 Looking forward to the next one.

Yeah... They're freely available but I doubt they'd be cool with me
cutting them up, manipulating a bit, and posting them as test samples
for people to download... I'm thinking of another blind test :-).



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[SlimDevices: Audiophiles] MEASUREMENTS: Audioengine D3 mini USB DAC / headphone amp.

2014-03-21 Thread Archimago

Hi guys. Lots of chatter in the last while with the Geek Out and these
small USB DACs starting with the Dragonfly a couple years back...

Got my hands on the Audioengine D3 locally and wanted to check out the
performance using a few different machines. Not bad at all given the USB
power and all!

http://archimago.blogspot.ca/2014/03/measurements-audioengine-d3-usb-dac.html

Happy spring!



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Re: [SlimDevices: Audiophiles] Anomalies in Beck's Morning Phase...

2014-03-20 Thread Archimago

Daverz wrote: 
 Got my RBCD copy.  It is very compressed sounding to my ears. 
 Everything is at the same volume level.  Other words that come to mind
 are flat, processed, and hashy.  All this works against the ambience
 that the music seems to be trying to create.  It's nice music, but I
 think a release like this would have sounded much better 40 years ago.

40 years ago would have been about Dark Side Of The Moon (1973).

Clearly those old tapes have provided us with excellent quality
remasters over the years. In time, if Morning Phase ever were to be
reissued, I wonder just how much improvement could be had from those
master digital files? And will it always look like ruined lossy audio in
those 2 tracks?



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Re: [SlimDevices: Audiophiles] Anomalies in Beck's Morning Phase...

2014-03-12 Thread Archimago

ralphpnj wrote: 
 
 The moral of this story is quite simple: if there is no penalty for
 lying then why bother to tell the truth.

*That* is the truth.

What a joke... If Ludwig is to be believed that he mixed everything in
24/96, then he must have received *ALL* MP3-encoded masters for those 2
tracks. As I noted, that spectrum looks like 192kbps (and optimistically
256kbps) spectra. Seriously, there's no excuse for what the audio signal
look like. It's not necessarily about how it sounds either but rather
the fact that a poor resolution album is being sold at a prime price
with claims of high-resolution.

Forget the vinyl / analogue sound... Maybe Beck is so forward thinking
that he specifically called Ludwig and wanted those songs to have the
MP3 sound :)



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Re: [SlimDevices: Audiophiles] What is really affecting the sound transmission?

2014-03-10 Thread Archimago

JJ77 wrote: 
 ...
 Just listened to some Flac Masters from Linn /records at 44.1Khz 24bit.
 Although these are very good, The DSF converted files do sound more
 detailed and live to me (again they are not the same songs/recordings
 so very subjective.). I can really see where you have to decide on your
 own what is the best sound for you. I do like the DSD (DSF) files as you
 can convert them to any format you want and they sound good. If the
 conversion software develops to a higher degree, then possibly the DSF
 conversions themselves in the future will be even better??

Welcome to the forum JJ. As you know, there are many opinions out there
in audiophile land. Many variables are of course involved in all of this
that it's often difficult to separate the wheat from the chaff as the
proverb goes. As a hobby, it's fun to explore the variables and come to
one's own conclusion on things...

I like keeping things as the paraphrase from Einstein goes as simple as
possible, but not simpler. And I personally find that having some
objective analysis keeps me honest with myself and what I think I
hear. This is especially significant when we're dealing with directions
the industry pushes on the consumer especially these days when what is
offered as improvements enter into the realm of the most likely
imperceptible.

In this regard, I would suggest the good ol' rules of thumb in terms of
sound quality and what affects it:
Good speakers/headphones (hard to tweak these)
Good room (potential to tweak or correct for)
Good music (what it's all about!)

I believe that essentially everything else makes a difference but I
would advocate not wasting too much time on it if it takes away from
musical enjoyment. Which CD player/DVD/streamer, DAC, amplifier, DSD vs.
PCM, sampling rates above 44kHz, 16 vs. 24-bits, cables all have a
*very* steep slope of diminishing return (especially those cables!) to
the point where there's really no reason to get too excited over the
stuff. Standards are high these days such that one doesn't need to have
a millionaire's system to feel that you're not missing out. 

Furthermore, much of this becomes purely subjective at some point as
well - for example solid state vs. tubes. Even if one hears a
difference, the value of the difference is usually idiosyncratic to the
listener - not really worth arguing about unless there's an agreed-upon
sense of what is to be achieved.

Regarding the DSD sound and conversion. Yes, a good DSD recording
sounds good whether native or converted to PCM. There are volume level
idiosyncrasies with DSD conversion such that one has to be careful that
the conversion does not lead to clipping (this was an issue back in the
day with the first batch of SACDs). Along with that is what to do with
all that high frequency noise created by noise shaping. Some converters
like Weiss Saracon (professional software, expensive) will
characteristically filter almost everything 40kHz which means there's
no benefit to PCM files over 24/88kHz (a good example is Channel
Classics - do not buy the 24/192 files because there's nothing over
40kHz). Other software like the free KORG AudioGate will retain more of
the ultrasonic content so 24/176 or 192 will look like there's stuff
there, but it's noise. From my experience with JRiver, it's more like
AudioGate in this respect. I don't think it matters for the most part
unless high-frequency content causes intermodulation distortion with
one's speakers or strains the amplifier into oscillation. Most DSD DACs
will impose a low pass filter so I do appreciate Saracon for imposing
the filter in the software conversion itself.

We must remember that there are limits to DSD, just like any other
format. Many folks (including myself) feel that there's no point to
DSD64 (current typical 2.8MHz sampling rate) simply because technically
it isn't significantly better than 24/96 PCM; and is probably less
accurate. To convert from DSD64 -- 24/88+ PCM will lead to small
rounding type errors. Furthermore, if you have a DSP process in there
like room correction filters, these do not function natively in DSD so
that conversion to PCM will have to happen. Bottom line is that the
purported benefits to DSD don't seem to be significant when compared to
the limitations. Companies would like to sell you a new DAC for the DSD
feature of course!

It's just one of those things that gets argued upon ad nauseum but
unlikely anyone ends up feeling satisfied with. The fact that you liked
the JRiver conversion without any tweaking is good enough evidence to
suggest that the PCM version moves you. Enjoy :-)



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Re: [SlimDevices: Audiophiles] Anomalies in Beck's Morning Phase...

2014-03-03 Thread Archimago

ralphpnj wrote: 
 There is one simple fix for HDTracks to resolve this whole mess:
 
 HDTracks should just convert the 24/96 PCM tracks to DSD!
 
 Once everything is convert to DSD is it, by default, Audiophile quality
 - regardless of what any stupid graphs might show :)

Nice one... Alas, that's not good enough.

You must run it through a *TUBE* DAC, then ANALOGUE TAPE, then ANALOGUE
CONSOLE, then a Meitner DSD ADC. Furthermore, you must ensure that this
is all Cardas / Nordost cabling. The process must further be supervised
by Cookie Marenco herself.

ONLY THEN is it truly ripened enough for audiophile tastes...
:rolleyes:



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Re: [SlimDevices: Audiophiles] Anomalies in Beck's Morning Phase...

2014-03-03 Thread Archimago

ralphpnj wrote: 
 I believe that you almost have it but there are still two things
 missing:
 
 First you must copy the PCM files onto a Mac Mini then you must run it
 through a *TUBE* DAC with asynchronous USB, then ANALOGUE TAPE, then
 ANALOGUE CONSOLE, then a Meitner DSD ADC and then back to the Mac Mini
 via asynchronous USB. Furthermore, you must ensure that this is all
 Cardas / Nordost cabling.
 
 Now I think that we have all the latest audiophile buzzwords covered!

Oi. Don't you dare forget COOKIE. Never forget COOKIE.

;)



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Re: [SlimDevices: Audiophiles] Audiophile Buzzwords, Fads, Crazes, Hypes and other Quantum Matters

2014-03-02 Thread Archimago

JohnSwenson wrote: 
 I was actually IR laser light, this is a very important distinction. CD
 players (NOT DVD players) used IR light to read the pits, the particular
 green ink had a strong absorption to the IR wavelength used by the
 laser, which did cut down on some leakage coming out of the edge of the
 CD. That DID allow some CD mechanisms to track better, cutting down on
 the electrical noise  generated by the tracking circuits. Note that in
 order for this to work it had to be the right ink that had good
 absorption to IR, not just any old marker pen. Many tests were done with
 the wrong ink. 
 
 Now fast forward to DVD players used to play CDs (which is now
 predominantly the case). The light is now red, not IR, the absorption
 characteristic of the ink is different to red than IR and the whole
 optical system and tracking mechanism is VERY different. I won't going
 into all the gory details but the upshot is that most DVD mechanisms
 have a very different response to edge painting than the original CD
 mechanisms did. Not that there is NO response, but it is different. The
 spectrum of the noise is quite a bit different due to the very different
 tracking systems.
 
 The upshot is that edge painting can still cut down on noise with DVD
 players, but how much is fairly variable depending on the specifics of
 the mechanism. In addition the noise that is being affected is quite
 different, which means it will most likely be detectable  by different
 people in different ways than was the noise from the CD only player. 
 
 So trying the same treated CD in a modern DVD based player is going to
 give very different results than the same CD in an older CD only player.
 
 
 Because of the different tracking mechanism for DVD players, there are
 others things that make a much bigger difference than edge painting,
 primarily vibrations in certain frequency ranges, if you want to tweak
 DVD players playing CDs, THIS is the area to (pardon the pun) focus on.
 I don't know whether Blue-Ray players have the same issues or not, I
 haven't studied them in this regard. (I just got my first Blue-Ray
 player a couple months ago)
 
 John S.

Indeed you're right about the IR with CD, John... However, I have never
read anywhere that this actually worked to reduce errors.



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[SlimDevices: Audiophiles] Anomalies in Beck's Morning Phase...

2014-03-02 Thread Archimago

Thanks for the tip Wombat.

It appears that there's more of an issue with Morning Phase than I
originally thought beyond DR6!

http://archimago.blogspot.ca/2014/03/follow-up-anomalies-in-becks-morning.html

Sad... Really...



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Re: [SlimDevices: Audiophiles] MUSINGS: High-Resolution Audio Expectations...

2014-03-02 Thread Archimago

Daverz wrote: 
 I have to say, I don't trust results with headphones, because of the way
 they tend to collapse spatial information.  But then all that matters is
 the results on the equipment that you'll use for your own listening. 
 

That's an interesting common sentiment I hear especially with the folks
on Audio Asylum and with the dyed-in-the-wool audiophiles.

True, the presentation is different, but I've always been much more
successful picking out details with a good pair of headphones. Without
the room effects to contend with, consistency of sound is also
maintained when I bring my pair of headphones over to hear a friend's
DAC for example.



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Re: [SlimDevices: Audiophiles] MUSINGS: High-Resolution Audio Expectations...

2014-03-02 Thread Archimago

Daverz wrote: 
 One will certainly pick up a lot of details on headphones, but I think
 you lose some other kinds of audible detail because of the way
 headphones interact (or don't) with the pinna.
 
 I'll try to do some of my own testing here by downsampling with sox as
 suggested earlier.
 
  
Code:

  sox infile -b 16 outfile rate 44100 dither -s

  

Yeah, give it a try... If you come up with a good track for us to A/B,
please let us know!



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[SlimDevices: Audiophiles] MUSINGS: High-Resolution Audio Expectations...

2014-03-01 Thread Archimago

Alright guys... Time to just put this out there now that it has been a
few years since relative widespread availability of high-resolution
audio in the form of HDTracks and such. The recent Beck album is an
important example of concerns around the wastefulness of these high
bitrate files being sold. But IMO, likely of no audible benefit at all.

'HRA Expectations'
(http://archimago.blogspot.ca/2014/03/musings-high-resolution-audio.html)



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Re: [SlimDevices: Audiophiles] Audiophile Buzzwords, Fads, Crazes, Hypes and other Quantum Matters

2014-02-27 Thread Archimago

Greening the edge of CD's was all the rage around the time I first got
some $$$ to buy audio stuff.

Start date: ~1990

Reason for the buzz: Some vague theory about stray red laser light
bouncing around the polycarbonate. An article in ICE (International CD
Exchange) apparently. Green supposed to absorb it.

Buzz kill: These things never die, right? Crazy SACD girl Theresa
Goodwin even wrote something around this in 2009  for Positive
Feedback (http://www.positive-feedback.com/Issue43/green_pen.htm).

End result: CD rot? Delusional disorder?



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Re: [SlimDevices: Audiophiles] What Would You Replace a Transporter With?

2014-02-26 Thread Archimago

It will be a sad day when my Transporter dies :-(

In late 2012 after the announcement that the Squeezebox was
discontinued, I managed to buy a used Touch. This is the unit I did all
the tests on last year. Well, I put the Touch away back in its box in
storage yesterday since I still have my old SB3 for general streaming in
my living room...

I figure, when the time comes, it'll be the Touch -- DAC (maybe my TEAC
UD-501). Let's hope it's a long time from now ;-)



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Re: [SlimDevices: Audiophiles] What Does It Take To Turn The PC Into A Hi-Fi Audio Platform ?

2014-02-26 Thread Archimago

Nice no-nonsense article... The kind of thing you'd expect from computer
geeks ;)



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Re: [SlimDevices: Audiophiles] The Philips Golden Ears Challenge!

2014-02-16 Thread Archimago

Nice ones Stephen and Wombat... :-)

Wombat: Boy I hope you didn't have to do a day shift the next day if you
went to bed after 0400!



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Re: [SlimDevices: Audiophiles] What Would You Replace a Transporter With?

2014-02-16 Thread Archimago

Julf wrote: 
 With an active repeater that regenerates the signal, yes. But a normal
 USB cable shouldn't be longer than 3 or 5 m.

Correct, standard USB should not be longer than about 15-20 feet.

An inexpensive active USB extender like the one I wrote about can
connect to my TEAC UD-501 at full USB2 speeds for DSD128 and 24/192+ -
I've tried up to 50 feet with good Cat 5e cable as in the description
with no noticeable audio degradation.

'
USB-Ethernet Cable Extender'
(http://archimago.blogspot.ca/2013/12/measurements-usb-cable-extension-with.html)



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[SlimDevices: Audiophiles] A Look And Listen to the BW Nautilus...

2014-02-14 Thread Archimago

Hey guys. Had a listen and got a chance to photograph the Nautilus last
weekend... Good pair of speakers but the design is clearly showing its
age.

Don't know about you folks, but I'd never get my wife to accept such a
contraption in the home :-).

http://archimago.blogspot.ca/2014/02/musings-saturday-am-b-nautilus-listening.html

Check it out if you have a chance! Would love to hear of other
impressions on this iconic speaker.



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Re: [SlimDevices: Audiophiles] A Look And Listen to the BW Nautilus...

2014-02-14 Thread Archimago

darrenyeats wrote: 
 I wonder if the dynamically compressed recordings as a reason for the
 fatigue was a bit of an excuse. IMO dynamic compression is not welcome
 at the mastering stage, it's different to reality ... but that doesn't
 mean it's -unpleasant- per se. A well sorted system should be
 informative, yes, but part of informing is the listener taking an
 interest - think infotainment! Also, taking modern recordings as a
 whole, Daft Punk's RAM isn't the harshest by any means?

Yes, I do agree that dynamic compression itself doesn't necessarily lead
to fatigue, but my feeling is that it is in general something that
contributes to the sensation. My feeling has always been that a good
system be neutral tonally and transparent enough to convey the lowest
audible detail. I do believe the Nautilus system was able to do this.

However, the music is what it is! Tracks like the disco-tinged Give
Life Back to Music off RAM has a lot of high end energy and when mixed
with those synthetically sharpened auto-tuned vocals, adds to the
perception of fatigue for me in whatever system I listen to. While a DR9
isn't bad for the track (or for modern pop productions), I can't help
but feel that the squashing of dynamics just adds to the treble
overload. Sure, those sizzling trebles sound great in my car and cheap
headphones, but on a superb system... Not so much IMO.

Don't get me wrong though... I love Daft Punk. I would not necessarily
change the production. Just that I find it more tolerable for longer
term listening when I roll off the highs with an EQ from about 10kHz in
the main system :-). And in the context of the Nautilus, I wonder if
those trebles excite ringing in the aluminium tweeters...



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Re: [SlimDevices: Audiophiles] A Look And Listen to the BW Nautilus...

2014-02-14 Thread Archimago

cliveb wrote: 
 IME extreme dynamic compression does indeed render some music
 unlistenable on good quality systems. It seems to me that revealing
 systems do exactly that: they *reveal* how bad the mastering is.
 
 Examples: Some years ago I noticed that Coldplay's XY sounded pretty
 ropey on our main system, but acceptable on an iPod. And recently my
 wife bought Night Visions by Imagine Dragons - it sounds absolutely
 *horrendous* on a decent system, but when I put it on my laptop to
 investigate why, I noticed that it sounded much less objectionable via
 cheap headphones through the laptop's on-board sound.

I loved the band 'They Might Be Giants' in university. One of the most
horrendous uses of compression I came across was back in 2001 when they
released the single to Boss Of Me (theme from Malcolm In The Middle).
I was horrified by how unlistenable that was with some decent Denon
headphones I had back then... Of course it was only years later that I
figured what was going on.



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Re: [SlimDevices: Audiophiles] A Look And Listen to the BW Nautilus...

2014-02-14 Thread Archimago

cliveb wrote: 
 Thanks for your impressions. The Nautilus is a legend, and deservedly
 so. Being a 20 year old design is no barrier to good performance.
 Remember that some people think that the best speaker in history *ever*
 is the original Quad ESL - which came out in 1957.
 
 Regarding your comment about those thin speaker cables - 16AWG is
 perfectly adequate for audio signals. Audiophile fashions come and go.
 While today's dogma is for massive think cables, I can recall back in
 the 1980s when there was a faction who reckoned that speakers should be
 connected with very thin single-core cables. (And I'm sure we all
 remember that crazy period when Litz wire was de rigueur for hooking up
 speakers).

Hmmm, I'll have to look for one of those Quad ESL's to have a listen
:-).

That's exactly why I took a picture of the speaker cable connection.
Extreme bigger is better cables are unnecessary other than the bling
factor. I noticed folks poking around afterwards surprised by how thin
those cables looked; I'm sure thinking if bigger gauge may have improved
the sound!



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[SlimDevices: Audiophiles] The Philips Golden Ears Challenge!

2014-02-14 Thread Archimago

Hey guys, I didn't post on this last week when I brought up the 'Philips
Golden Ears Challenge'
(https://www.goldenears.philips.com/en/index.html) on the blog. But I
have been contacted by a couple folks on here who took the challenge and
earned their Golden Ears :-).

I don't think he'd mind me mentioning it - Wombat for example got the
job done with his Sound Blaster X-Fi XtremeMusic and Sennheiser HD-590
headphones... Good show!

Curious who else took the challenge and with what gear?



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Re: [SlimDevices: Audiophiles] Does an audiophile Squeezebox (digital out only) exist now?

2014-02-07 Thread Archimago

Fantastic info. Thanks John.

BTW: Are you running room correction software on these? Curious what
plugin...



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Re: [SlimDevices: Audiophiles] Shilling for Dollars

2014-02-06 Thread Archimago

darrenyeats wrote: 
 I pondered upon your comments and then I looked through Stereophile's
 measurements on DACs with interesting results. See my post here:
 http://www.pinkfishmedia.net/forum/showthread.php?t=151401 I hope you
 don't mind me name-dropping you!

Interesting post Darren... Interesting extrapolation of John's comment.

However, I really don't know how reasonable it would be to extrapolate
those monotonic cascade of harmonics with these DACs which as you
indicate are down in the -100dB and below range! Tube amps have 2nd
order harmonics at something like -40dB which is orders of magnitude
louder in comparison... Furthermore, those graphs in Stereophile are
with input impedances of 600-ohms off the DAC. This is of course way
lower than the typical preamp in the tens of k-ohms.

I'd love to see DBTs demonstrating ability for people to differentiate
decent DACs when volume controlled. Until that's demonstrated, it's hard
to put much weight in whatever theory there may be for euphonic vs.
dysphonic gear. 

Show me the piece of steak exists first... Then we talk about how it
tastes ;-)



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Re: [SlimDevices: Audiophiles] Does an audiophile Squeezebox (digital out only) exist now?

2014-02-05 Thread Archimago

John, which Wandboard are you guys basing the CSP design off of? Duo,
quad?

Thanks...



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Synergistic Research Tesla T2 SE, T3 SE, PowerCell 4!

2014-02-04 Thread Archimago

Peiter wrote: 
 Unfortunately I did not save the link to that discussion. As I recall I
 found that forum via a link on Your homepage.

No prob... I'll keep my eyes peeled. Looks like something the inmates at
the Audio Asylum would be discussing. Just curious what brands they'd be
claiming to be superior for audio.



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Re: [SlimDevices: Audiophiles] Some publications at least make an effort to keep a semblance of honest ; -)

2014-02-04 Thread Archimago

cliveb wrote: 
 IMHO he's regurgitated a number of dogmas loosely based on a distorted
 understanding of the facts.
 
 And at the end he says he doesn't know why hi-res sounds better than CD,
 when he has a trivial method of finding out. All he needs to do is take
 one of his beloved hi-res files, whack it through a decent sample rate
 converter (eg. SOX) to convert it to 16/44.1, and then ABX the two.
 He'll find that he will be unable to tell the difference (at normal - or
 indeed anything less than insane - listening levels).
 
 In a sense, this kind of audio journalism is more dangerous than the
 sort written by the outright loonies, because it seems reasonable to the
 rational but uninformed reader.

But, but, but... Neil Young said 24/192 was needed to liberate the
music... And that we were going to be, like, hearing the music for the
first time!



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Synergistic Research Tesla T2 SE, T3 SE, PowerCell 4!

2014-02-03 Thread Archimago

Peiter wrote: 
 Archimago, keep on your good work. I'll refer to your pages when
 possible ...
 
 The other day, I read on a forum about the importance of the Network
 switch when streaming digital audio. Some was convinced that Switch A
 was a lot better sounding than Switch B 

Thanks for the note Peiter.

Wow... Switches eh? Do you have a link to these discussions?

I noticed at least a comment tonight on AudioStream addressing the
desire among readers for measurements... Yup, step in the right
direction after all those purely subjective cable reviews and fringe
stuff like the Synergistic Tranquility Base.



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[SlimDevices: Audiophiles] MEASUREMENTS: Synergistic Research Tesla T2 SE, T3 SE, PowerCell 4!

2014-02-01 Thread Archimago

Here you go... Measurements of an Oppo BDP-105 using one of
audiophileland's valued company's products. I'm just amazed at the
kind of attention Synergistic / Ted Denney gets at various supposedly
respected places on the Net. Fancy power cables indeed...

http://archimago.blogspot.ca/2014/02/measurements-power-cable-redux.html

For more of Denney's musings, check out this article of his to hype
the new Galileo line:
http://www.synergisticresearch.com/featured/galileo-series/
Mildly entertaining...



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Synergistic Research Tesla T2 SE, T3 SE, PowerCell 4!

2014-02-01 Thread Archimago

SBGK wrote: 
 Can you prove your measurements are relevant to how something sounds ?

As I said in the article, the system can detect the slightest
differences like the minimal phase filtering effects (eg. TEAC DAC
filter settings)... I personally cannot hear significant differences
between say the default settings of SoX filtering options for minimal
vs. linear phase upsampling. I believe the system is significantly more
sensitive to change in signal than my threshold for hearing (male, 42
years old, little very loud concerts in life, office job).

Since people have different hearing acuity, I cannot of course prove
it does or does not sound different to any specific person; as much as I
cannot *prove* whether the guy I ran into yesterday was actually
abducted by aliens as he claimed... What I can say is that within the
limits of the system, there's not electrical change from the DAC and
that lack of difference correlates to my (and my friend's) experience in
listening to these cables (and with other tests I have done over the
year).



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Synergistic Research Tesla T2 SE, T3 SE, PowerCell 4!

2014-02-01 Thread Archimago

Julf wrote: 
 Indeed - it is the problem of proving that unicorns don't exist. All we
 can say is that it is extremely unlikely that they exist.

Further to this, it really should be upon the believer of said unicorn
to provide the evidence of its existence.

Certainly before one starts charging tickets for admission to see the
beast :-)



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Synergistic Research Tesla T2 SE, T3 SE, PowerCell 4!

2014-02-01 Thread Archimago

Mnyb wrote: 
 Yes indeed aka Russels teapot (that is in orbit somewhere between earth
 and Mars disprove that if you can ) .
 
 Archimagos measurements are imho below what’s considered human
 thresholds for hearing buy a very wide margin .
 
 If you can silence your room that much to get actual acuety below -100
 dB in a room you will start to hear the blood in your own ears as in an
 anoic chamber .
 People have done experiments mixing in jet engines and marching bands in
 the last bits of CD quality audio and no one can hear that . Archimago
 measures below that
 ...

Figured you'd enjoy this one based on previous discussions...



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Re: [SlimDevices: Audiophiles] Clowntime is NOT over

2014-01-26 Thread Archimago

SBGK wrote: 
 or maybe you guys are wrong and the rest of the world is right. Is that
 a possibility ?

Of course it's a possibility. Just not likely based on well understood
science and the fact that the science was used to create our electronic
gadgets and the lack of evidence for many of these beliefs.

I do however wonder what you mean by the rest of the world is right.
Suppose I take a $500 3' length of AudioQuest Diamond USB cable and go
to the following places to talk about how this cable is the best
sounding interconnect I've heard:

1. Rocky Mountain Audio Fest - Most there would likely be OK if I said
this was the best USB cable known to man; the exhibitors might even show
me a few they think superior.

2. My non-audiophile coworkers, friends, wife (ie. most of the world) -
responses would range from indifference, cautious curiosity - really!,
or perhaps some eye-rolling from those who have some concept/experience
with how digital transfers work - really?. Most people will likely
have some inkling that I'm probably one prone to conspicuous consumption
for spending so much money on something they got for free with their
printer.

3. Steve Hoffman music forum, home theater (eg. AVS) forum - some
support but I'm sure a bit of disapproval. Nasty arguments not
uncommon.

4. AES (Audio Engineering Society) Meeting - I'm not likely to make many
friends among the professional organization if I keep talking about
expensive audiophile products like this unless I were handing them out
free.

5. Hydrogen Audio forum - I'll likely get banned or at the least asked
to produce ABX test results. Don't do it, man...

So...  What do you think the rest of the world believes? I'd be
cautious suggesting the rest of the world sides with commonly accepted
audiophile beliefs.



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Re: [SlimDevices: Audiophiles] Clowntime is NOT over

2014-01-26 Thread Archimago

darrenyeats wrote: 
 $500 USB cable is foo, therefore all audiophile claims are foo?

Surely, Darren, you know exactly the kind of foo-lishness we're talking
about...



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Re: [SlimDevices: Audiophiles] Clowntime is NOT over

2014-01-25 Thread Archimago

Interesting discussion boys  girls.

Posted a little something on Audio PCs this week for the blog.

A few months ago, I think it was Mnyb who suggested I have a look at one
of the audiophiles' cherished products. Managed to track one down
:-). Look for some interesting pictures and results in the next week...



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Re: [SlimDevices: Audiophiles] Clowntime is NOT over

2014-01-25 Thread Archimago

castalla wrote: 
 Ahem - it's the love of money  actually.  As I said earlier it's a
 sort of wealth distribution - there are better ones, but that's for
 another argument.

Yup... Love of money... The point I think still applies (perhaps even
more so for the snakeoil salespersons).



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[SlimDevices: Audiophiles] DEMO: What a poor USB cable sounds like...

2014-01-17 Thread Archimago

Found a really crappy piece of USB cable from the turn of the century
:-)

A demonstration of what a poor USB cable sounds like to demonstrate the
effects of digital errors with an asynchronous USB DAC like the ASUS
Essence One. Also a look at the jitter test...

http://archimago.blogspot.ca/2014/01/demo-measurements-what-does-bad-usb-or.html



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Some Squeezebox numbers to consider...

2014-01-15 Thread Archimago

Kellen wrote: 
 My RMMA results gave me final noise level at -106.1 but I am talking
 about the screenshot which shows information down -130+ like with your
 Touch screen shot in your blog being showed underneath here. I wonder
 about these very low readings that are passed the EMUs skills. 
 
 15474
 
 http://archimago.blogspot.ca/2013/02/measurements-logitech-squeezebox-touch.html

Those are the EMU's skills :-)! As you see, there's a peak at 60Hz
correlated to the AC mains hum (maybe also things like the Touch's
screen refresh rate). That's down at -115dB. When the program reports
dynamic range it will base the limits of the hardware off that even
though for some (most) frequencies the noise floor is lower... That's
why I also post the graphs rather than just the numbers so we can look
at which parts of the spectrum is affected.



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Using Cat5e USB Cable Extender - does it worsen jitter / audio quality?

2014-01-15 Thread Archimago

darrenyeats wrote: 
 What about here
 http://archimago.blogspot.ca/2013/02/measurements-logitech-touch-as-transport.html
 for 24/96? You have different results for RCA and cheap RCA.

Good point. Fair enough :-). That was a demonstration of noise getting
into the DAC from an unshielded RCA cable not meant as a digital coaxial
interconnect.

I guess it's best to say that so long as there's adequate shielding from
noise in a non-galvanically isolated digital interface and bit
perfection is achieved, there should be no differences...

As a reminder, even though the cheap RCA cable demonstrated higher
noise floor, the difference was really small and can be bettered with
just a decent inexpensive generic coaxial cable!



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Some Squeezebox numbers to consider...

2014-01-12 Thread Archimago

Kellen wrote: 
 And many of my thanks go out to you, Archimago. 
 
 I did the loopbacks test and got each of noise and dynamic range @
 -112db. My thinking is this reading is the best the EMU can perform at,
 no? If so, how can it show my Touch testings @ -130db as it does? Is it
 a guess work on the EMUs part? Should I only be satisfied with tests on
 gears no better than -112db?

Yes, that -112dB is essentially the limits of the EMU. Remember though
that this is through the whole 20-20kHz range and that the device is
better (probably about -120dB) from 100Hz-10kHz which covers the
frequencies our ears are most sensitive to as per Fletcher-Munson data.

Should we be satisfied with -112dB noise floor? IMO... Yeah :-). I'd
love to hear a piece of recorded music needing 100dB dynamic range, and
none of my friends seem to listen in their home anechoic chamber!

You should try running that Touch measurement again. No way it can do
-130dB from 20-20kHz. If you're measuring the analogue output, you
should be getting about -105dB with 24-bit audio. This correlates nicely
with what John Atkinson got in the Stereophile measurements using much
more expensive pro  equipment.



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Using Cat5e USB Cable Extender - does it worsen jitter / audio quality?

2014-01-12 Thread Archimago

darrenyeats wrote: 
 Right but a reasonably intelligent and well educated person finding
 something -implausible- does not constitute fact!
 
 Not long ago, it was a fact that digital transports and cables couldn't
 make a difference for DACs, until Archimago got his measuring stick
 out.
 

Just a note to clarify what the results show:
1. Yes, transports do make a difference. Small changes can be found
between the Squeezebox units and laptops mainly in the extreme high
frequencies... I suspect this is the result of timing differences with
the -synchronous- SPDIF interface and my old adaptive isochronous USB
DAC. This effect goes away with asynchronous USB DACs (ASUS Essence One,
TEAC UD-501).

2. Digital cables -by themselves- do not seem to make any difference -
TosLink, coaxial, USB, HDMI all measure the same for me (obviously so
long as the digital data isn't being corrupted). Theoretically,
extremely long cables could cause timing errors but I haven't seen this
with a 12-foot length of plastic TosLink (2x6' connected with plastic
optocoupler) or 25-foot poor quality coaxial SPDIF. Of course, my
billionaire playboy friend Keaton Goulden-Eyre III subjectively heard
differences ;-).

I'm still looking for the opportunity to borrow some expensive cables to
try from the local audio store but have not been down there in a few
months now...



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Some Squeezebox numbers to consider...

2014-01-11 Thread Archimago

Stratmangler wrote: 
 Are you still using the noisy SMPS supplied with it?
 A decent quiet PSU lifts the performance levels considerably, at least
 it does in my experience.

I've used both over the past year... Borrowed a friend's linear power
supply about 6 months back. Interestingly, I didn't notice much
difference in terms of ADC measurements so for the purpose of the
testing, I just stayed with the switching PSU. This could make a
difference listening with the DAC I suppose but I didn't get a chance to
test that bit at the time.



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Some Squeezebox numbers to consider...

2014-01-11 Thread Archimago

Kellen wrote: 
 I solved the stereo crosstalk problem by interchanging L-R RCA's. Now,
 measuring -103 dB and getting excellent rating.
 
 Was thinking  would this EMU and RMAA combinations be good to
 measure power amp performances?

That's more like it!

And you'll (likely) see that the stereo crosstalk correlates nicely with
interconnect quality with improvement using balanced cables as well.



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Some Squeezebox numbers to consider...

2014-01-11 Thread Archimago

Kellen wrote: 
 Was also wondering just how accurate the EMU is because on some of these
 graphs it is showing levels way low like -130dB. If not accurate to
 these low levels does it make wrong the results? Merci.

This has been accurate in my testing. The noise floor varies depending
on the frequency and usually, what I have seen is that the EMU's ADC
noise floor is excellent from 100Hz to 10kHz ~-130dB with some noise
susceptibility lower down and above. Less susceptible to noise as
expected with the use of balanced cables and equipment.

For example, no problem at all measuring the LSB of a 16-bit signal as
demonstrated here:
http://archimago.blogspot.ca/2013/07/measurements-dac-waveform-peeping-903db.html

Easily measure below -96dB... I estimate that within the 20Hz-20kHz
range, the EMU's limit is around -110dB with reasonable confidence. This
is the level the Transporter and TEAC UD-501 measure using balanced
interconnects.

All the best with your testing Kellen!

I encourage everyone with a decent ADC to give testing a try :-). Run a
few experiments and find the answers for oneself and see if objective
results correlate with subjective impression. Share your results with us
- especially if you're hearing/seeing something surprising!



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Some Squeezebox numbers to consider...

2014-01-08 Thread Archimago

Kellen wrote: 
 Wow, this is awesome stuffs.
 
 I also have a EMU 0404USB which I have used for years to record stuff
 with my band. I never thought to use it to measure like you are here. 
 
 I think I will download the RMAA software and do a test on my Touch.
 Just for interests sake.

Hi Kellen... Yup, give it a go!

The EMU 0404USB is quite a remarkable, flexible device! I wish Creative
improved the driver (on occasion, I get unexplained crashes switching
sample rates for example) but it's a discontinued device. The ADC
hardware seems quite capable and it's not difficult at all to get
reliable results when used in testing. I'm sure there's a bit of
variability as well... 

A quick note if you give it a try. For my unit, I notice the right
channel is slightly more noisy than the left 10kHz (below -100dB so IMO
still very good) so I tend to use the left channel more or average the
results if possible - especially for those jitter spectral analyses.



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Using Cat5e USB Cable Extender - does it worsen jitter / audio quality?

2013-12-31 Thread Archimago

mintaudio wrote: 
 I find your blog very interesting.. keep up the good work. I doubt it
 would be very popular over at 'Computer Audiophile' though!

Smopular popular :-)

Doesn't matter really... The interesting thing is that even if there are
lots of disagreements and gnashing of audiophile teeth, I'm just showing
folks what I'm finding beyond just subjective opinions - I hope this
kind of evaluation of gear takes hold out there or at least gets readers
thinking and questioning... Thus far, despite my invitations for links
to disprove my findings, I haven't seen anyone present alternate
objective findings! I think that's telling :-)

Have a wonderful 2014 everyone!



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[SlimDevices: Audiophiles] MEASUREMENTS: Using Cat5e USB Cable Extender - does it worsen jitter / audio quality?

2013-12-29 Thread Archimago

Probably the last measurement for the year :-).

Let's see what adding a 50-ft Cat5e cable extender does to the DAC's
audio output... If USB cables are *that* important, surely this should
ruin a few things like worsen jitter substantially, right? Measurements
with my -asynchronous- TEAC UD-501 DAC.

http://archimago.blogspot.ca/2013/12/measurements-usb-cable-extension-with.html

I want to thank you guys here on the forum for this past year! It's been
fun posting up some measurements and getting the blog started :-).

Hope you all had a wonderful 2013 with the Squeezeboxes and all the best
for 2014!



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Re: [SlimDevices: Audiophiles] What is your personal philosophy as an audiophile?

2013-12-13 Thread Archimago

Hey guys... Just thought I'd share what I'm rocking these days. Still
lots to do in the sound room - very bare walls and the rug's taking its
sweet time in arriving!

Nonetheless, lots of fun putting the pieces together and loving what's
coming out of my good 'ol Transporter.

Have a wonderful Holiday Season everyone... :o

http://archimago.blogspot.ca/2013/12/musings-look-at-sound-room.html



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Re: [SlimDevices: Audiophiles] Anyone used this... AudiophileOptimizer

2013-12-08 Thread Archimago

Mnyb wrote: 
 Good !
 
 But for the sake of discussion , if you tested this program and got the
 usuall null result . There would be next program and the one after that
 and so forth.
 That test with completely different OS and computers still outputting
 the exact same thing is a good indicator of how any off those program's
 would perform existing or future ones.
 
 Beyond getting quality hardware if you are using and internal soundcard
 and setting the PC for bitperfect audio . There is not much you can do ,
 and with USB just make sure things are bitperfect .

In general, yes, you're correct.

Unless there's a reasonable explanation why things should sound
different, I really think there's no point chasing these software
optimization tweaks if the interface is known to be bit-perfect. As far
as I can tell, software players are not able to substantially affect
jitter (have not seen any objective results to show this despite claims
from questionable sources). Shutting down processes / lowering CPU
utilization may reduce noise from the computer so that could be a good
thing. However, it's better to find a hardware solution or shield the
audio devices from the computer, fix ground loops, etc. if this is a
problem!

Ironically, extreme audiophile music players like JPlay tend to lower
the use of data buffers leading to higher CPU load thus worsening the
potential for creating more interference. Maybe some people like this
and happily pay for the privilege :confused:...



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Re: [SlimDevices: Audiophiles] Anyone used this... AudiophileOptimizer

2013-12-05 Thread Archimago

Mnyb wrote: 
 
 I would,suggests that Archimago has the equipment and the vervital to
 test this , but I doubt he will .
 He has done similar products, so one more ?.
 And by the reason I jut gave that there are endless flawed ideas for
 every correct one it would be endless work to follow every weird audio
 idea out there .

Yeah... As per this post back in April:
http://archimago.blogspot.ca/2013/04/measurements-laptop-audio-survey-apple.html

Using a decent DAC with an asynchronous USB interface device (CM6631A -
same interface as the newer Schiit DAC's) , I was unable to measure a
significant difference between Mac (OS X) vs. Windows 8 computer. As
such, I cannot imagine what would lead to a significant difference if I
were to install this software but running Windows Server 2012 on the
same hardware as my Win8 computer!

Getting a full version of Server 2012 isn't cheap and it's not exactly
the kind of OS optimized for multimedia applications!



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Re: [SlimDevices: Audiophiles] Can Transporter play this

2013-12-05 Thread Archimago

Yes, 24/88 plays great on the Transporter...

I have a bunch of DSD/SACD rips in this format so having this feature is
a must for me. If the Transporter did not handle this sample rate
well, I would have likely moved on!



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Re: [SlimDevices: Audiophiles] Anyone used this... AudiophileOptimizer

2013-11-27 Thread Archimago

Wow, looks like you need to also buy a copy of Windows Server 2012 to
get this to work (assuming you're not running it already).



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Re: [SlimDevices: Audiophiles] What is your personal philosophy as an audiophile?

2013-11-15 Thread Archimago

Pneumonic wrote: 
 Given that not one of us has - identical systems, setup in the same
 room, with the same music being played - any subjective comparison on
 what any us can or can't hear lacks a true reference and is nothing more
 than an exercise in futility as it is nothing more than a un-winnable I
 hear this, you hear that battle.
 
 In the absence of such reference many people use science, or maths, or
 measurements as a reference point since it's the only way to bring into
 the fold some element of objectivity which can be referenced by
 everyone.
 
 As for me. It boils down to this:
 
 • If I can hear it, and measurements suggest I shouldn’t be able to hear
 it, then I believe that what I hear may be real or imaginary but I side
 with imaginary and wonder if I should go see my shrink.
 • If I can hear it, and measurements agree that I should be able to hear
 it, then I believe that what I hear is real and I grab another drink.
 • If I can't hear it, and measurements suggest I should be able to hear
 it, then I change up my system.
 • If I can't hear it, and measurements suggest I shouldn’t be able to
 hear it, then I grab another drink.

What the hell... Grab a drink anyways!
:cool:



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Re: [SlimDevices: Audiophiles] What is your personal philosophy as an audiophile?

2013-11-13 Thread Archimago

heisenberg wrote: 
 I was very saddened when I discovered that I can't reliably tell whether
 the music playing is from a 320 kbps mp3 or from a lossless source.
 Hence, I'm not into chasing after 24/192 -- like you've said, a complete
 overkill.

Like Mnyb said, do not be saddened by this. I have yet to find a single
person who I can verify as passing an ABX between 320kbps and lossless
WAV/FLAC when the music is encoded with a good encoder like a newer
version of LAME (I've tested about 10 audiophiles using combination of
headphones or speakers)... Looking at the audiophile sites, one gets the
impression as if this is some common feat! When I did the online MP3
test on my blog earlier this year, I know that some very outspoken
members of other forums got the result wrong so I know for a -fact -that
they're unjustifiably confident and just plain -wrong -about their self
assessment.

Of course this is not to say nobody can tell a difference, just that I
think it's extremely -rare-. Knowing this fact for oneself is a sign
of honesty and integrity IMO.

I agree, no need to chase after overkill. As I've expressed in the past,
I'm happy to have 24/96 as the limit of what I would bother to download
(even if I buy 24/192, it's almost always converted down to 24/96). At
24/96, there's really ZERO possible audio information missing for human
ears assuming one is even concerned about brickwall issues with 44kHz
sampling. As for DSD, I see it as an interesting toy. I've written
about it including PCM -- DSD128 upsampling and I find it sounds
different, but the effect is like any DSP that can add some euphonia /
body to the sound IMO. Still can't get myself to honestly believe
there's anything special with DSD that cannot be captured with good
PCM.

I'm still unhappy about the DSD file format - useless old DSF  DFF -
poor tagging and compression capabilities; what a waste of storage.



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Re: [SlimDevices: Audiophiles] What is your personal philosophy as an audiophile?

2013-11-13 Thread Archimago

jimbobvfr400 wrote: 
 
 I did however have some older MP3 files (that I've since replaced with
 FLAC) where I could tell an immediate difference, or at least I think I
 could? 
 
 I really do think Lame has been improved quite a bit in the later
 versions, either that or I was an idiot and couldn't use it properly. 
 

Exactly. I had some old stuff back in the day encoded with Xing MP3 in
320/256 and clearly the quality was inadequate. I suspect that many old
timers in audio may have built their impression based on these old
encoders or just listened to 128kbps and from then declared to everyone
just how inferior MP3 is.

The above would be a more diplomatic view. I suspect what's more
sinister is that of expectation bias that tossing away bits *must*
result in bad sound! and most people do not really test it out for
themselves. Even worse are folks like Neil Young who make ridiculous
statements about how MP3 throws out 80% of the data and other such
objective drivel apparently believing that his ears are somehow
golden. Maybe he can hear it, who knows... I wish I could place bets
against him doing it though ;)



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Re: [SlimDevices: Audiophiles] New HDMI Guest Review Measurements...

2013-11-11 Thread Archimago

Mnyb wrote: 
 Thanks again for the measurement part .
 
 Hdmi has been accused of horrible  jitter  in it's implementation ?
 And there are probably some not so fantastic implementations out there
 especially older ht amps .
 Can you see any of that in this Onkyo amp ?
 
 What's the spectrum using spdif or toslink at the same amp , I can't
 remember if this amp has figured in any of the other parts of your epic
 measurement series .
 
 This will ofcourse not change the fact that all functioning hdmi cables
 will yield the same result . But hdmi vs spdiff could be interesting .
 
 This is ofcourse another question than the one you tested .
 
 Btw is it really possible to make satire about these guys :) they do
 work as described using equipment who's noise and distortion behaviour (
 tubes and or other cargo cult designs ) that definetely have the
 possibility to mask any subtle differences that could exist .
 This is actually to some extent possible , you can infact hear subtle
 differences even if you use speakers that are far from linear compared
 to the electronics ,but at moderate levels good speakers are not that
 bad . But it would not exactly help to drive these speakers with amps
 that barely can handle them :) to further ad insult to injury many cult
 speakers are designed to be used with said amps ? In reality the deviate
 from good contemporary speaker design to be able to use these amps !? 2
 wrongs does make 1 silly or what ?

Hello mnyb.
Glad to see you guys enjoying Keaton's kontribution. The man's old but
crafty :cool:.

Yes, I did test the Onkyo relatively fully back in this post:
http://archimago.blogspot.ca/2013/10/measurements-onkyo-tx-nr1009-as-hdmi.html

The HDMI jitter actually was fine in comparison to SPDIF coaxial and
TosLink! In fact, it was better than coaxial and about equivalent to
TosLink using the little CM6631A device for USB-to-SPDIF conversion.
This is a bit of a surprise since the asynchronous USB CM6631A is
usually quite adequate and relatively low in jitter as in previous
measurements.

Of course the jitter spectrum isn't as good as with the Transporter or
TEAC stereo DAC, but it's quite reasonable and miles better than
something like the distortion one sees with NOS DACs when doing the
J-Test. Not to mention tube gear which would likely just drown out the
signal with noise. I wrote a bit on HDMI and jitter in that post as
well...



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Re: [SlimDevices: Audiophiles] New HDMI Guest Review Measurements...

2013-11-10 Thread Archimago

ralphpnj wrote: 
 Thank you so much for presenting a clear and very reasonable
 introduction and review to this wonderful new product. However I do have
 a few questions which I feel are very important.
 
 As you know the new audiophile standard for listening to computer based
 audio is the Mac Mini - USB - tube based asynchronous USB DAC - tube
 pre-amp - tube power amp, at least according to the golden eared gods
 at both TAS and Stereophile. Now the Mac Mini does have a HDMI port so
 clearly the the Quantum HDMI Squeezer + ULTRA Cable set up would be
 ideal except that so few audiophile DAC's presently have HDMI inputs. So
 my two fold question is a) what DAC's presently feature HDMI input and
 b) are there any plans to bring the groundbreaking technology of the
 Quantum HDMI Squeezer + ULTRA Cable to a USB cable?? Please, please,
 pretty please!!

Thank you Ralph for your inquiry.

1. The gods are correct. TAS and Stereophile are written by gentlemen of
distinction who are genetically devoid of earwax and hearing loss. I of
course run a custom HDMI DAC because I'm worth it and could afford to
hire one of the chief digital consultants at Integra, Meridian and
Esoteric to design the circuitry and Nodko-san to have his boutique
Japanese workshop to realize the device with point-to-point soldering
using fine silver wire and hand selected/individually heard components.
The gods are aware that HDMI is best, just that we in the upper crust
will not release this Truth yet. In a couple years, when asynchronous
USB becomes -pass�-, TAS and Stereophile will surely speak more about
HDMI when the general populace is ready. Consider my article a peek of
what is to come. For now, everyone else will need to use their low-end
HDMI receivers or something pedestrian like the NAD M51:
http://www.stereophile.com/content/nad-m51-direct-digital-da-converter

2. As in my interview, those quantum resonances are unique to small
connectors and especially micro-HDMI. In recent E-mail exchanges with
QuantaVibes, I do believe they will be -trying -to recalculate the
equations for micro-USB! It looks like USB users could very well be in
for some fun ;). This could be especially wonderful for tablet users!

Thank you for the interest...

Yours humbly,
Keaton I. Goulden-Eyre III



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[SlimDevices: Audiophiles] New HDMI Guest Review Measurements...

2013-11-09 Thread Archimago

Greetings.
True to his word, Keaton Goulden-Eyre has reviewed another set of cables
for me... Along with some HDMI cable measurements...

Enjoy :-)

http://archimago.blogspot.ca/2013/11/guest-review-measurements-quantum-hdmi.html



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Re: [SlimDevices: Audiophiles] Amazing USB cable breakthrough!!

2013-10-30 Thread Archimago

Nice one Ralph :-).

Taking the creative writing class again, eh?



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Re: [SlimDevices: Audiophiles] Amazing USB cable breakthrough!!

2013-10-30 Thread Archimago

ralphpnj wrote: 
 The sad part is that what we all readily see as a complete farce is most
 likely not that far from reality.
 
 So in reality I'm right the cutting edge of high end audio marketing.
 
 Now all that is needed is a very serious review by of the audio clowns.

:rolleyes:

Although I'll be heading off to Asia again for business very soon, I've
secured my friend Keaton Goulden-Eyre III for an upcoming review.
Apparently something cutting edge he's supposedly working on... Should
be good. I'll post a notice here when the blog post goes up.



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[SlimDevices: Audiophiles] MEASUREMENTS: PCM-to-DSD Realtime Upsampling/Conversion Effects...

2013-09-13 Thread Archimago

Hey guys,
Been away for awhile on vacation and general summer merriment :cool:

Anyhow, life's busy but found some time to have a look/listen to the
realtime PCM-to-DSD conversion process found in JRiver MC19. As usual,
details on my blog...

'PCM-to-DSD Upsampling Effects (JRiver MC19 Beta)
'
(http://archimago.blogspot.ca/2013/09/measurements-pcm-to-dsd-upsampling.html)

Cheers!



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Some Squeezebox numbers to consider...

2013-08-11 Thread Archimago

Haven't been through the forums much... Lots to do over the summer to
worry about audio!

However, I managed to borrow one of these units from my brother-in-law
to check out. So...  For those who may have wondered what a current low
end digital streamer measures like in terms of analogue out and as
TosLink transport, this one's for you:
http://archimago.blogspot.ca/2013/08/measurements-wd-tv-live-look-at-and.html



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Re: [SlimDevices: Audiophiles] MEASUREMENTS: Some Squeezebox numbers to consider...

2013-07-28 Thread Archimago

Hello guys... Been away for a little while. In any case, managed to put
something up from some measurements I did a few weeks back. Thought I'd
try out one of Stereophile's digital tests which they've been doing for
ages!

http://archimago.blogspot.com/2013/07/measurements-dac-waveform-peeping-903db.html

Still on vacation ;-)

Hope everyone having a good July!



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