Re: [SlimDevices: Audiophiles] S-Booster

2010-09-01 Thread JohnSwenson

seanadams;573355 Wrote: 
> At least two different power supplies shipped with SB3 over the years.
> The newer ones are way better. To which are you referring? The Unifive
> ones were just barely FCC compliant, but the Logitech branded ones were
> vastly quieter.
> 
> Edit: I still maintain my original position as to how little noise
> actually makes it to the outputs in either case, after the two stages
> of internal regulation.

Hi Sean,
All three of my SB3s have the same PS, they don't say Logitech on them
so they must be the Unifives. I was not aware there was a better one
shipping with some SB3s. The one with the Touch is WAY better. 

Yes I agree, on the SB3 I do measure a tiny amount of noise from the
supply inside the box, but thats probably because there is so much
coming from the supply in the first place. On the Touch Even that is
not there. The Touch has extremely quiet supply rails, especially for a
device with a builtin computer. The only issue I've seen is that when
supplying current to an external device there is a little bit of 120Hz
noise on the supply rails. I'm not sure how this is getting through.
The only place it can come from is the supply, but I would expect the
regulators to do an excellent job of getting rid of any 120Hz. 

I have tried very carefully to state that advantages of going with a
linear supply are related to less noise getting into other parts of the
system. 

John S.


-- 
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Re: [SlimDevices: Audiophiles] SB3 + Power amp problem

2010-09-01 Thread Phil Leigh

azaz44;573687 Wrote: 
> Incredible, you're right.
> I've bought this amp used it came together with XLR->RCA converters, so
> I just used them always and now thought it doesn't have RCAs.
> 
> I don't have the shorting plugs unfortunately, but I'll build them
> simply and replace the connectors I use now (they look not great
> actually).
> 
> 
> But I think these connectors are not the reason for my problems,
> because they work with all other equipment. What I used is exactly
> this:
> 
> http://www.fullcompass.com/product/297984.html
> 
> It's written it has signal on pin 1, and pin's 2+3 connected to ground.

The EC requires GND on pin 1, + on pin 2 and - on pin 3 for its XLR's.

As CliveB explained, the SB ground is not referenced to earth, it
floats.

You need to follow the manual and not use XLR cables,


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend
Supertweeters, Blue Jeans Digital,Kimber Speaker & Chord Interconnect
cables
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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Re: [SlimDevices: Audiophiles] SB3 + Power amp problem

2010-09-01 Thread azaz44

Phil Leigh;573670 Wrote: 
> You have an EC AW100DM ?
> This model has RCA inputs (in addition to XLR's).
> 
> There should be a PAIR of RCA inputs for each channel, one marked "+"
> and the other marked "-".
> 
> For single-ended (unbalanced) equipment like the SB, a shorting plug
> needs to be present on each "-" input (these should have been supplied
> with your amp). You then use standard RCA-RCA cables to connect the SB
> output to the pair of "+" inputs.
> 
> See here: http://www.electrocompaniet.no/files/manuals/aw100dmb.pdf

Incredible, you're right.
I've bought this amp used it came together with XLR->RCA converters, so
I just used them always and now thought it doesn't have RCAs.

I don't have the shorting plugs unfortunately, but I'll build them
simply and replace the connectors I use now (they look not great
actually).


But I think these connectors are not the reason for my problems,
because they work with all other equipment. What I used is exactly
this:

http://www.fullcompass.com/product/297984.html

It's written it has signal on pin 1, and pin's 2+3 connected to ground.


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Re: [SlimDevices: Audiophiles] Best 24/96 demo tracks?

2010-09-01 Thread Phil Leigh

Mnyb;573683 Wrote: 
> The Dunedin is "ok" . A Vivaldi that also is "ok" .
> 
> I have one Barb Jungr that I think is "bad" it also musically very
> boring, with elevator style arangements.
> And harsh sounding
> But I have to find the DVD-A I burnt of it and rerip it to get into the
> computer again, they where in WMA lossles and i transcoded to wav to
> burn them as PCM , audacity shoved clipped peaks in that one .
> I can just not remember what record it was .
> 
> My win-XP partion died unnoticed :) some weeks ago, so these files are
> only on DVD for the moment.

When you say "ok" do you mean adequate or very good? 
Which Barb Jungr do you have?


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend
Supertweeters, Blue Jeans Digital,Kimber Speaker & Chord Interconnect
cables
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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Re: [SlimDevices: Audiophiles] Best 24/96 demo tracks?

2010-09-01 Thread Mnyb

Phil Leigh;573660 Wrote: 
> Interesting - do you have any examples of Linn files you feel are not as
> good as they should be?
> 
> All the ones I have (not a massive collection) sound amazing to me -
> and they aren't in any way over-compressed or clipped. Some of them are
> categorically in the "true reference recording" league. the Dunedin
> Consort Messiah for example... the 24/96 Barb Jungr, Claire Martin or
> Carol Kidd all sound amazing to me too.

The Dunedin is "ok" . A Vivaldi that also is "ok" .

I have one Barb Jungr that I think is "bad" it also musically very
boring, with elevator style arangements.
And harsh sounding
But I have to find the DVD-A I burnt of it and rerip it to get into the
computer again, they where in WMA lossles and i transcoded to wav to
burn them as PCM , audacity shoved clipped peaks in that one .
I can just not remember what record it was .

My win-XP partion died unnoticed :) some weeks ago, so these files are
only on DVD for the moment.


-- 
Mnyb


Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 and assorted amps
SiriuS, Classe' Primare and Dynadio speakers, Contour 4 Contour Center,
and Contour 1.3SE for the rear ch. Rel Stadium 3 sub.
Bedroom/Office: Boom
Kitchen: SB3 + powered Fostex PM0.4
Miscellaneous use: Radio (with battery)
I use a Controller various ir-remotes and a Eee-PC with squeezeplay to
control this

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Re: [SlimDevices: Audiophiles] Best 24/96 demo tracks?

2010-09-01 Thread michael123

Mnyb;573539 Wrote: 
> Has anyone recomeded iTrax yet ? some thing acoustical from them ?
> 
> They have proper 24/96 recordings.
> 
> Btw I'm not that impressed with the linn offerings, usual "production
> values" you want to avoid to much compression and digital clipping in
> the few files i sampled

Yes, AIX is the best digital sound I heard on my system..
Try Guitar Noir and The Latin Jazz Trio


-- 
michael123

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Re: [SlimDevices: Audiophiles] SB3 + Power amp problem

2010-09-01 Thread Phil Leigh

You have an EC AW100DM ?
This model has RCA inputs.

There should be a PAIR of RCA inputs for each channel, one marked "+"
and the other marked "-".

For single-ended (unbalanced) equipment like the SB, a shorting plug
needs to be present on each "-" input (these should have been supplied
with your amp). You then use standard RCA-RCA cables to connect the SB
output to the pair of "+" inputs.


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend
Supertweeters, Blue Jeans Digital,Kimber Speaker & Chord Interconnect
cables
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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Re: [SlimDevices: Audiophiles] Best 24/96 demo tracks?

2010-09-01 Thread Wombat

Here is some talk about some newer samples Linn offered:
http://www.hydrogenaudio.org/forums/index.php?s=&showtopic=74123&view=findpost&p=652362
You may go to the thread beginning to read all.


-- 
Wombat

Transporter -> RG142 -> Avantgarde based monoblocks -> Sommer SPK240 ->
self-made speakers

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Re: [SlimDevices: Audiophiles] Best 24/96 demo tracks?

2010-09-01 Thread adamdea

I absolutely agree with Phil about the Dunedin messiah, which has been
very widely praised by the Muso press for its musical qualities - no
mean feat when there are dozens of vesions in the catalogue. I think
that "I know that my redeemer liveth'   24/96 or 88? sounds as much
like a human voice as any recording I have ever heard; and a very good
voice.


-- 
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Re: [SlimDevices: Audiophiles] Best 24/96 demo tracks?

2010-09-01 Thread Phil Leigh

Mnyb;573539 Wrote: 
> Has anyone recomeded iTrax yet ? some thing acoustical from them ?
> 
> They have proper 24/96 recordings.
> 
> Btw I'm not that impressed with the linn offerings, usual "production
> values" you want to avoid to much compression and digital clipping in
> the few files i sampled

Interesting - do you have any examples of Linn files you feel are not
as good as they should be?

All the ones I have (not a massive collection) sound amazing to me -
and they aren't in any way over-compressed or clipped. Some of them are
categorically in the "true reference recording" league. the Dunedin
Consort Messiah for example... the 24/96 Barb Jungr, Claire Martin or
Carol Kidd all sound amazing to me too.


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend
Supertweeters, Blue Jeans Digital,Kimber Speaker & Chord Interconnect
cables
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.

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Re: [SlimDevices: Audiophiles] SB3 + Power amp problem

2010-09-01 Thread azaz44

cliveb;573632 Wrote: 
> I have absolutely no knowledge about the Electrocompaniet amp, but what
> you describe sounds like some kind of protection circuit is kicking in,
> and I do have a hypothesis
> 
> First, the background. You're connecting the SB3's unbalanced output to
> the EC's XLR input. Probably the SB3's signal is going to pin 3 (or 2),
> and its ground is going to pin 2 (or 3). Pin 1 on the XLR (the ground
> on the EC) is probably only connected to the screen of the cable, and
> the screen isn't connected at the SB3 end. This configuration is fairly
> typical for driving a balanced input from an unbalanced output, and the
> difference between pins 2 and 3 is what the balanced input regards as
> the signal.
> 
> Now, under normal circumstances, the ground from the unbalanced source
> will be 0V, because the source component (eg. preamp, CD player, etc)
> has its ground plane connected to the mains earth. But the SB3 has a
> floating ground, and (using the stock PSU) there's quite a lot of
> ripple on its ground plane. This means that what's going to pin 2 (or
> 3) of the EC's input isn't 0V, but some very small amplitude mains
> frequency ripple. Because it would be treated as signal and get
> amplified, it would result in quite loud hum. If you connect the SB3
> output direct to a normal balanced amp that accepts whatever it's
> given, loud hum is preceisely what you'll get. (The reason you don't
> get this hum when you connect an SB3 to a normal unbalanced amp is
> because the ground planes of the SB3 and amp are connected, and so the
> ripple gets shunted to earth via the amp's mains earth connection).
> 
> Conjecture: Perhaps the EC amp is detecting this unacceptably high
> level of hum and refusing the power up, in order to protect your
> speakers/hearing. An experiment to try would be to try connecting the
> screen end of the RCA-to-XLR cable to the ground at the SB3 end. This
> will shunt the ripple to earth via the EC's ground (assuming that the
> EC's ground plane is connected to mains earth). Alternatively, connect
> a wire between the SB3's ground plane and mains earth (a suitable place
> to access the SB3's ground plane is the outer ring of its COAX digital
> output).

It goes beyond my understanding a little bit, but it sound promising.
As I imagine, this could be either the problem you describe, or some
strange ground level difference between SB3 left and right channels,
but I cannot imagine how this could happen.

I'll try to connect the grounds. The amp have the ground connector on
the rear panel, like most amps used to have (I think mostly for
turntables). Can I just connect this to SB3 coax outer ring, or could I
break anything?
Could it have any negative effect on either EC or SB3?


-- 
azaz44

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Re: [SlimDevices: Audiophiles] SB3 + Power amp problem

2010-09-01 Thread azaz44

iPhone;573627 Wrote: 
> As for your Amp, I haven't used any of them. But depending on how the
> XLR to RCA is done, you could be asking for big time trouble. IMO one
> should never use RCA to XLR adapters, its the easiest way to damage
> equipment. With a build-in thing your describing, I would not use that
> either for fear of grounding something that shouldn't be. Its one thing
> is you have dual inputs and there is a selector switch for XLR or RCA.

The problem is, this power amp doesn't have any RCA inputs. Only
balanced XLR. Is it really risky?

The RCA->XLR connectors are regular connectors, nothing self-made or
diy.

> From what your describing it might be auto sensing (hope its checking
> ground also) and maybe its a function of how high the SB3 Volume is set
> at when you turn the amp on. If you feel there are no grounding issues,
> I would try it with low SB3 volume then higher and see if there is a
> trigger point. Never do high first, start low and work your way up but
> I would not go past 50% volume without inline attenuators. This process
> may require turning the amp off each time depending on how auto-sensing
> works if that what it has.

I think it doesn't depend on the volume. I set SB volume to the lowest
possible, and I also pause it always when turning on power amp. So
there's no signal at all. Still the amp doesn't start. And if I connect
it with a passive preamp in between, it starts fine. What could be wrong
with SB outputs?

The power amp must be definitely making some checks, because it will
not start if nothing is connected to the inputs at all. But what could
cause it, that with SB it thinks there's nothing connected?


BTW. I'm just listening to the setup with this passive amp in between,
so basically SB3 with a power amp and I really like the sound.


-- 
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Re: [SlimDevices: Audiophiles] SB3 + Power amp problem

2010-09-01 Thread cliveb

I have absolutely no knowledge about the Electrocompaniet amp, but what
you describe sounds like some kind of protection circuit is kicking in,
and I do have a hypothesis

First, the background. You're connecting the SB3's unbalanced output to
the EC's XLR input. Probably the SB3's signal is going to pin 3 (or 2),
and its ground is going to pin 2 (or 3). Pin 1 on the XLR (the ground
on the EC) is probably only connected to the screen of the cable, and
the screen isn't connected at the SB3 end. This configuration is fairly
typical for driving a balanced input from an unbalanced output, and the
difference between pins 2 and 3 is what the balanced input regards as
the signal.

Now, under normal circumstances, the ground from the unbalanced source
will be 0V, because the source component (eg. preamp, CD player, etc)
has its ground plane connected to the mains earth. But the SB3 has a
floating ground, and (using the stock PSU) there's quite a lot of
ripple on its ground plane. This means that what's going to pin 2 (or
3) of the EC's input isn't 0V, but some very small amplitude mains
frequency ripple. Because it would be treated as signal and get
amplified, it would result in quite loud hum. If you connect the SB3
output direct to a normal balanced amp that accepts whatever it's
given, loud hum is preceisely what you'll get. (The reason you don't
get this hum when you connect an SB3 to a normal unbalanced amp is
because the ground planes of the SB3 and amp are connected, and so the
ripple gets shunted to earth via the amp's mains earth connection).

Conjecture: Perhaps the EC amp is detecting this unacceptably high
level of hum and refusing the power up, in order to protect your
speakers/hearing. An experiment to try would be to try connecting the
screen end of the RCA-to-XLR cable to the ground at the SB3 end. This
will shunt the ripple to earth via the EC's ground (assuming that the
EC's ground plane is connected to mains earth). Alternatively, connect
a wire between the SB3's ground plane and mains earth (a suitable place
to access the SB3's ground plane is the outer ring of its COAX digital
output).


-- 
cliveb

Transporter -> ATC SCM100A

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Re: [SlimDevices: Audiophiles] Touch: Upsampling with sox?

2010-09-01 Thread michael123

soundcheck;573621 Wrote: 
> Any reason for using --buffer? It shall improve performance (I use NAS), 
> although I did not experiment
much.


soundcheck;573621 Wrote: 
> How about "flc pcm" + SRC ? Did you manage to get that to work?
No. Everything fails except FLAC, I think this is something to do with
the headers.. I tried wave, pcm, AIFF. I opened a bug, did not see any
progress though
http://bugs.slimdevices.com/show_bug.cgi?id=16341


-- 
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Re: [SlimDevices: Audiophiles] SB3 + Power amp problem

2010-09-01 Thread iPhone

azaz44;573611 Wrote: 
> Hi there
> 
> I'm a happy owner of SB Classic, older one with Slim Devices logo on
> it, and was trying to connect it to the power amplifier directly to see
> how it goes. And found interesting problem here.
> 
> My power amp is Electrocompaniet AW100DMB, with some connectors which
> allow to connect RCA cables to its XLR sockets. One second after
> pressing the power button I can hear some switch inside, and then it
> works - sound is coming. Or if I don't hear this switch, it doesn't
> start and there's no sound.
> 
> And here's what happens with the power amp (EC)
> - with CD player or any PRE-AMP connected, it starts fine.
> - if I connect the SB3, it doesn't start.
> - if I run it unconnected completely, it doesn't start.
> - if I connect the SB3 to preamplifier, and pre to EC, starts fine.
> - if I connect the SB3 to a PASSIVE preamp, and then to power amp, it
> starts fine. (pre is Creek OBH 14 which can serve as a DAC as well, but
> I'm running it without any power connected to it so it is really
> passive).
> - if I connect like above, to a passive preamp, but use it's outputs
> marked "fixed", which makes it skip the volume control, it runs fine
> (!).
> 
> Everytime I start EC, there's no signal coming (SB3 is paused or
> powered off with the remote).
> 
> So the question is, why the combo SB3 + EC doesn't run?
> It's really incredible to me. Could this be some grounding problem in
> SB3, which the EC detects, or what else?
> 
> I'm also interested in your experience with connecting SB3 directly to
> a power amp.

I like the sound and ease of connecting directly to the power amp. Just
helped my son's friend with his first non-rack setup. A Touch, a
GFA-555e, and Vandersteen Model 2Ce Signature II speakers. FLAC sounds
great on his speakers and its about as simple as it gets.

As for your Amp, I haven't used any of them. But depending on how the
XLR to RCA is done, you could be asking for big time trouble. IMO one
should never use RCA to XLR adapters, its the easiest way to damage
equipment. With a build-in thing your describing, I would not use that
either for fear of grounding something that shouldn't be. Its one thing
is you have dual inputs and there is a selector switch for XLR or RCA.

>From what your describing it might be auto sensing (hope its checking
ground also) and maybe its a function of how high the SB3 Volume is set
at when you turn the amp on. If you feel there are no grounding issues,
I would try it with low SB3 volume then higher and see if there is a
trigger point. Never do high first, start low and work your way up but
I would not go past 50% volume without inline attenuators. This process
may require turning the amp off each time depending on how auto-sensing
works if that what it has.


-- 
iPhone

*iPhone*   
Media Room:
Transporter, VTL TL-6.5 Signature Pre-Amp, Ayre MX-R Mono's, VeraStarr
6.4SE 6-channel Amp, Vandersteen Speakers: Quatro Wood Mains, VCC-5
Reference Center, four VSM-1 Signatures, Video: Runco RS 900 CineWide
AutoScope 2.35:1, Vandersteen V2W Subwoofer   

Living Room:
Duet, ADCOM GTP-870HD, Cinepro 3K6SE III Gold, Vandersteen Model 3A
Signature, Two 2Wq subs, VCC-2, Two VSM-1  

Kitchen: Squeezebox BOOM
Bedroom: Squeezebox BOOM
Bathroom: Squeezebox Radio
Ford Thunderbird: Duet, Mac Mini
Ford Expedition: SB Touch, USB drive

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Re: [SlimDevices: Audiophiles] Touch: Upsampling with sox?

2010-09-01 Thread soundcheck

I tried also linear and intermediate.  For now I like -M best.

Any reason for using --buffer?

How about "flc pcm" + SRC ? Did you manage to get that to work?


-- 
soundcheck

'soundcheck's au...@vise - Squeezebox Touch Modification Blog'
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[SlimDevices: Audiophiles] SB3 + Power amp problem

2010-09-01 Thread azaz44

Hi there

I'm a happy owner of SB Classic, older one with Slim Devices logo on
it, and was trying to connect it to the power amplifier directly to see
how it goes. And found interesting problem here.

My power amp is Electrocompaniet AW100DMB, with some connectors which
allow to connect RCA cables to its XLR sockets. One second after
pressing the power button I can hear some switch inside, and then it
works - sound is coming. Or if I don't hear this switch, it doesn't
start and there's no sound.

And here's what happens with the power amp (EC)
- with CD player or any PRE-AMP connected, it starts fine.
- if I connect the SB3, it doesn't start.
- if I run it unconnected completely, it doesn't start.
- if I connect the SB3 to preamplifier, and pre to EC, starts fine.
- if I connect the SB3 to a PASSIVE preamp, and then to power amp, it
starts fine. (pre is Creek OBH 14 which can serve as a DAC as well, but
I'm running it without any power connected to it so it is really
passive).
- if I connect like above, to a passive preamp, but use it's outputs
marked "fixed", which makes it skip the volume control, it runs fine
(!).

Everytime I start EC, there's no signal coming (SB3 is paused or
powered off with the remote).

So the question is, why the combo SB3 + EC doesn't run?
It's really incredible to me. Could this be some grounding problem in
SB3, which the EC detects, or what else?

I'm also interested in your experience with connecting SB3 directly to
a power amp.


-- 
azaz44

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View this thread: http://forums.slimdevices.com/showthread.php?t=81664

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Re: [SlimDevices: Audiophiles] Best 24/96 demo tracks?

2010-09-01 Thread R Johnson

I listened to many of the tracks on the Linn Classical Sampler #4 last
night.
At least initially, I could not reliably discern any differences. 
Perhaps on further listening, or on a friend's high end system

I guess I'll have to turn in my Audiophile membership card.

But before I do: 
I think that these tracks are well recorded (based on listening). 
They are not dynamically compressed or clipped (based on Audacity
inspection).


-- 
R Johnson

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View this thread: http://forums.slimdevices.com/showthread.php?t=81634

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Re: [SlimDevices: Audiophiles] Touch: Upsampling with sox?

2010-09-01 Thread michael123

soundcheck

I tried your upsampling options, and I find the bass "not synchronized"
with the rest, kind of delayed.

Did you try other options?

What I use now is


Code:


  # FLAC output starts here 
  
  flc flc * *
# FT:{START=--skip=%t}U:{END=--until=%v}D:{RESAMPLE=-r %d}
[flac] -dcs $START$ $END$ -- $FILE$ | [sox] -v0.95 --buffer 32768 -q -t 
wav - -t flac -C0 -3 -c2 -r96000 - polyphase -cutoff 1.0
  
  flc flc transcode *
# FT:{START=--skip=%t}U:{END=--until=%v}D:{RESAMPLE=-r %d}
[flac] -dcs $START$ $END$ -- $FILE$ | [sox] -v0.95 --buffer 32768 -q -t 
wav - -t flac -C0 -3 -c2 -r96000 - polyphase -cutoff 1.0
  



but polyphase is from older SoX releases, today it is just replaced by
'rate' effect


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michael123

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View this thread: http://forums.slimdevices.com/showthread.php?t=80903

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