23 Apr
2010
23 Apr
'10
6 p.m.
I'm converting a bunch of wav files from 32-bit float to 16-bit (CD) quality.
What's the best quality tool to use on the command line? I have sndfile-convert
1.0.17-4, and sox 14.0.1-2+b1, and also ecasound and a bunch of other stuff.
Thanks.
-ken
23 Apr
23 Apr
6:31 p.m.
Hi Ken!
I have Ecasound, sndfile-convert and sox. But from these three I deem
sndfile-convert to be the best. but I seem to remember, that Fons Adriaensen
recently released a tool/library to do the same task. I believe it is as good
as or better than sndfile-convert. I seem to recall, that there were issues
with finetuning dithering, that sndfile didn't offer. As I said, I'm not 100%
syure about that.
If in doubt and not wanting to get to any more troubles installing
something: use sndfile-convert. It has always served me nicely!
Kindly yours
Julien
--------
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======== FIND MY WEB-PROJECT AT: ========
http://ltsb.sourceforge.net
the Linux TextBased Studio guide
======= AND MY PERSONAL PAGES AT: =======
http://www.juliencoder.de
6:57 p.m.
On Fri, Apr 23, 2010 at 10:31:38PM +0200, Julien Claassen wrote:
I have Ecasound, sndfile-convert and sox. But from
these three I
deem sndfile-convert to be the best. but I seem to remember, that
Fons Adriaensen recently released a tool/library to do the same
task. I believe it is as good as or better than sndfile-convert. I
seem to recall, that there were issues with finetuning dithering,
that sndfile didn't offer. As I said, I'm not 100% syure about that.
That is the 'resample' application, part of the source distribution
of zita-resampler. For 16-bit output it offers rectangular,
triangular or Lipschitz noise shaped dithering.
Ciao,
--
FA
O tu, che porte, correndo si ?
E guerra e morte !
7:22 p.m.
On Fri, Apr 23, 2010 at 10:58:03PM +0200, Fons Adriaensen wrote:
On Fri, Apr 23, 2010 at 10:31:38PM +0200, Julien
Claassen wrote:
Thanks, I'm looking at the different dithering types here:
http://www.kokkinizita.net/linuxaudio/dithering.html
And wondering, which is the "best" of them to use?
Looks to me like the rectangular creates the fewest harmonics. Am I reading this
correctly?
Thanks.
-ken
I have Ecasound, sndfile-convert and sox. But
from these three I
deem sndfile-convert to be the best. but I seem to remember, that
Fons Adriaensen recently released a tool/library to do the same
task. I believe it is as good as or better than sndfile-convert. I
seem to recall, that there were issues with finetuning dithering,
that sndfile didn't offer. As I said, I'm not 100% syure about that.
That is the 'resample' application, part of the source distribution
of zita-resampler. For 16-bit output it offers rectangular,
triangular or Lipschitz noise shaped dithering.
7:32 p.m.
On Fri, Apr 23, 2010 at 02:20:00PM -0700, Ken Restivo wrote:
On Fri, Apr 23, 2010 at 10:58:03PM +0200, Fons
Adriaensen wrote:
No. The only harmonics to be seen are in the first picture,
the one with *no* dithering.
For final delivery (e.g. a CD) the noise-shaped one should
be the best, it will produce the least audible noise. This
doesn't matter is you have a constant high level, it does
for music with a wide dynamic range.
If the signal is an intermediate one in a production process
(but then why would you use 16-bit), the rectangular one is
recommended.
Ciao,
--
FA
O tu, che porte, correndo si ?
E guerra e morte !
On Fri, Apr 23, 2010 at 10:31:38PM +0200, Julien
Claassen wrote:
Thanks, I'm looking at the different dithering types here:
http://www.kokkinizita.net/linuxaudio/dithering.html
And wondering, which is the "best" of them to use?
Looks to me like the rectangular creates the fewest harmonics. Am I reading this
correctly? I have Ecasound, sndfile-convert and sox. But
from these three I
deem sndfile-convert to be the best. but I seem to remember, that
Fons Adriaensen recently released a tool/library to do the same
task. I believe it is as good as or better than sndfile-convert. I
seem to recall, that there were issues with finetuning dithering,
that sndfile didn't offer. As I said, I'm not 100% syure about that.
That is the 'resample' application, part of the source distribution
of zita-resampler. For 16-bit output it offers rectangular,
triangular or Lipschitz noise shaped dithering.
9:02 p.m.
On Fri, Apr 23, 2010 at 11:33:36PM +0200, Fons Adriaensen wrote:
On Fri, Apr 23, 2010 at 02:20:00PM -0700, Ken Restivo
wrote:
Cool. Is that the "Lipschitz error feedback filter" then?
-ken
On Fri, Apr 23, 2010 at 10:58:03PM +0200, Fons
Adriaensen wrote:
No. The only harmonics to be seen are in the first picture,
the one with *no* dithering.
For final delivery (e.g. a CD) the noise-shaped one should
be the best, it will produce the least audible noise. This
doesn't matter is you have a constant high level, it does
for music with a wide dynamic range.
On Fri, Apr 23, 2010 at 10:31:38PM +0200, Julien
Claassen wrote:
Thanks, I'm looking at the different dithering types here:
http://www.kokkinizita.net/linuxaudio/dithering.html
And wondering, which is the "best" of them to use?
Looks to me like the rectangular creates the fewest harmonics. Am I reading this
correctly? I have Ecasound, sndfile-convert and sox. But
from these three I
deem sndfile-convert to be the best. but I seem to remember, that
Fons Adriaensen recently released a tool/library to do the same
task. I believe it is as good as or better than sndfile-convert. I
seem to recall, that there were issues with finetuning dithering,
that sndfile didn't offer. As I said, I'm not 100% syure about that.
That is the 'resample' application, part of the source distribution
of zita-resampler. For 16-bit output it offers rectangular,
triangular or Lipschitz noise shaped dithering.
9:54 p.m.
On Fri, Apr 23, 2010 at 04:00:30PM -0700, Ken Restivo wrote:
On Fri, Apr 23, 2010 at 11:33:36PM +0200, Fons
Adriaensen wrote:
Yes, --lips on the command line.
Ciao,
--
FA
O tu, che porte, correndo si ?
E guerra e morte !
For final delivery (e.g. a CD) the noise-shaped
one should
be the best, it will produce the least audible noise. This
doesn't matter is you have a constant high level, it does
for music with a wide dynamic range.
Cool. Is that the "Lipschitz error feedback filter" then?
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linux-audio-user@lists.linuxaudio.org
6 comments
3 participants
participants (3)
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Fons Adriaensen -
Julien Claassen -
Ken Restivo