dean;486074 Wrote:
On Nov 16, 2009, at 8:20 AM, technobear wrote:
I can hear a clear difference using a Transporter between FLAC
decoded
on a PC and FLAC decoded on the Transporter.
If this is reproducible (i.e. measurable) then it's a serious bug in
Transporter and would need to be
pippin;486334 Wrote:
Or it's a serious bug in whatever does the decoding on the PC.
That's a very valid point.
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
SB Touch Beta (wired) - TACT 2.2X (Linear PSU) + Good Vibrations
Guys, the tiny differences we are talking about here are NOT ABOUT THE
1's AND 0's.
How many more times!
The distortions that we are hearing here are not caused by missing or
wrong bits.
They are far more subtle than that.
They fall into two broad categories - amplitude domain distortion and
technobear;486379 Wrote:
Guys, the tiny differences we are talking about here are NOT ABOUT THE
1's AND 0's.
How many more times!
The distortions that we are hearing here are not caused by missing or
wrong bits.
They are far more subtle than that.
They fall into two broad
technobear wrote:
How many more times!
Why are you ranting? The device is not released yet.
They fall into two broad categories - amplitude domain distortion and
time domain distortion - commonly known as noise and jitter as I said in
an earlier post.
You just described all possible errors
Ah, sample rate drift. Very interesting. Sounds likes samples are being
dropped.
Is it possible to do this with the digital output?
On Nov 17, 2009, at 12:08 AM, Phil Leigh wrote:
dean;486074 Wrote:
On Nov 16, 2009, at 8:20 AM, technobear wrote:
I can hear a clear difference using a
dean;486395 Wrote:
Is it possible to do this with the digital output?
Good question! I wasn't using an external DAC when I made the
comparison. I only listened to the Transporter's analogue outputs.
If I can find the FLAC files, I'll give it a go using an external DAC
(a Beresford Caiman).
dean;486395 Wrote:
Ah, sample rate drift. Very interesting. Sounds likes samples are
being dropped.
Is it possible to do this with the digital output?
Dean, I'm not sure - I'm at the boundary of my knowledge. As far as I
understand things, no samples are being dropped or repeated,
JohnSwenson;485927 Wrote:
Tonight I did some careful listening with the touch, FLAC and PCM
streaming and TinySC. I can't listen to Wav on TinySC since it does not
support WAV at this point (I hope it does in the future).
John S.
Hi John,
When you conducted these tests, how much delay,
Phil Leigh;486419 Wrote:
I have no way of measuring the s/pdif output except by playing it
through an external DAC. Clearly no samples are dropped etc otw DTS
wouldn't work.
I have a decent sound card with SPDIF in which I could hook up to the
Touch and run audiodiffmaker against if that
radish;486449 Wrote:
I have a decent sound card with SPDIF in which I could hook up to the
Touch and run audiodiffmaker against if that would be at all useful.
Radish - that would be great - can you download my test file
http://rapidshare.com/files/307731080/WAV_Limelight.wav.html
and make a
Thank you John, for your careful listening tests.
If I read you correctly, it seems that your recent FLAC tests seem to
favour the use of the Touch in standalone mode with TinySC :
JohnSwenson;485927 Wrote:
Next I tried from TinySC. This is just flac since it does not support
wav and
I'm not John but I believe he is saying that in ascending order of
replay quality from lowest to highest (from the analogue outputs) the
results are:
FLAC from SBS
FLAC from TinySC
WAV from SBS
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd
Phil Leigh;485955 Wrote:
I'm not John but I believe he is saying that in ascending order of
replay quality from lowest to highest (from the analogue outputs) the
results are:
FLAC from SBS
FLAC from TinySC
WAV from SBS
That's also what I understood from his last post, but seems to
C'mon guys, Andy is right.
If it's to discuss these matters, it's better to bring this discussion
to the Audiophile forum.
The SB Touch forum is a general forum, and most people don't understand
the nuances of your argumentation.
--
Themis
SB3 - North Star dac 192 - Cyrus 8xp - Sonus Faber
Let me reitterate, In these tests the same FLAC file was used for all
tests. TinySC as commonly configured does not transcode, so when playing
a FLAC file it can only send a FLAC stream to the player. Currently it
does not support WAV files so I can only hear FLAC decoding from TinySC
right now.
On Nov 16, 2009, at 11:44 AM, JohnSwenson wrote:
Let me reitterate, In these tests the same FLAC file was used for all
tests. TinySC as commonly configured does not transcode, so when playing
a FLAC file it can only send a FLAC stream to the player. Currently it
does not support WAV files
dean;486074 Wrote:
If you can't measure it, then you can't fix it.
There is a test which can measure the audio effects of very small
amounts of jitter, its actually quite simple: play a 15KHz sine wave,
run it through a 24 bit ADC and run a very high resolution FFT. Someone
did the math
andyg;486077 Wrote:
I will try and get to the bottom of why WAV/PCM does not work today, so
you can test that too.
Thanks Andy. My guess is that its just a file type thing and WAV has
been turned off in the file types list. I'm not sure what file to look
in for this since I always use the
Yep, WAV was broken because of --notranscoding, but it was easily fixed.
--
andyg
andyg's Profile: http://forums.slimdevices.com/member.php?userid=3292
View this thread:
andyg;486154 Wrote:
Yep, WAV was broken because of --notranscoding, but it was easily fixed.
That's excellent news. Top stuff Andy [image:
http://www.technobear.btinternet.co.uk/emoticons/thumbsup.gif]
--
technobear
Chris
Transporter Beresford Caiman Croft Syntegra Zu Druid MkIV ('My
John - very interesting - I'm getting similar results... check my
earlier post in the other forum... I think we are looking at the same
problem?
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
SB Touch Beta (wired) - TACT 2.2X
Phil Leigh;482234 Wrote:
Just to be clear, the test I am planning will see if there is a
difference between the same flac being played from a network PC running
sbs or a local usb disk runing under tinysc (all via the analogue
outputs).
It won't categorically prove the difference (if any)
peterw;482200 Wrote:
I don't have the ears, training, space, gear, or source material to
challenge such a notion, but I find it amusing how all these products
over the years are said to sound both excellent and much better than
their predecessors. I especially like reading about the
peterw;482200 Wrote:
I don't have the ears, training, space, gear, or source material to
challenge such a notion, but I find it amusing how all these products
over the years are said to sound both excellent and much better than
their predecessors. I especially like reading about the
Phil Leigh;482079 Wrote:
I'm working on a test to prove there is a difference (if there is one).
I just need a day free of DIY, work etc... :-(
That's very interesting, Phil.
It's nearly impossible to do an A/B test on this, without having two
boxes, so, would be nice to have a test with a
I said I do hear a difference between networked SBS or TinySC, at this
point I don't know for sure why. It MAY be different data, but I don't
think so. Phil's test will prove that one way or the other.
If the bits are identical then proving it gets hard. At this level of
quality (I DID say the
Just to be clear, the test I am planning wilsee if there is a difference
between the same flac being played from a network PC running sbs or a
local usb disk runing under tinysc (all via the analogue outputs).
It won't categorically prove the difference (if any) is audible, but it
should provide
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