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ffmpeg vs. SoX for resampling
jkauff
post Feb 5 2013, 11:00
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I just found out that TAudioConverter, although it has SoX support, uses ffmpeg for bitdepth changes, resampling, and dither. I don't use those functions very much, but I'm curious if anyone has done a quality comparison between the two.
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mavere
post Feb 6 2013, 02:58
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QUOTE (db1989 @ Feb 5 2013, 02:28) *
I’m no authority, but there’s always good old http://src.infinitewave.ca/


That's a fascinating site.

I'm curious though, why are some so bad? It doesn't look like anyone should need to reinvent the wheel so to speak, as there are amazing open-source (SoX) and proprietary (Adobe Audition) options, and hell, even Apple CoreAudio from 5 years ago is decent.

This post has been edited by mavere: Feb 6 2013, 03:01
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nu774
post Feb 6 2013, 05:06
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QUOTE (mavere @ Feb 6 2013, 10:58) *
Apple CoreAudio from 5 years ago is decent.

Highest setting of Apple CoreAudio resampler has really (unnecessarily) high SNR, but is 10x or more slower than SoX (at least on Windows).
And even Microsoft resampler of Windows Media Foundation (CLSID_CResamplerMediaObject) has reasonablly good quality / performance, but read this bug on Win7 WaveOut:
http://www.hydrogenaudio.org/forums/index....st&p=788882
It seems that their left hand doesn't know what the right hand is doing.
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Posts in this topic
- jkauff   ffmpeg vs. SoX for resampling   Feb 5 2013, 11:00
- - db1989   Iím no authority, but thereís always good old http...   Feb 5 2013, 11:28
|- - bandpass   QUOTE (db1989 @ Feb 5 2013, 10:28) Letís,...   Feb 5 2013, 12:33
|- - jkauff   QUOTE (db1989 @ Feb 5 2013, 05:28) Iím no...   Feb 5 2013, 12:36
||- - bandpass   QUOTE (jkauff @ Feb 5 2013, 11:36) Well, ...   Feb 5 2013, 13:05
||- - phofman   QUOTE (bandpass @ Feb 5 2013, 14:05) ... ...   Feb 5 2013, 16:32
||- - bandpass   QUOTE (phofman @ Feb 5 2013, 15:32) I am ...   Feb 5 2013, 17:23
||- - phofman   QUOTE (bandpass @ Feb 5 2013, 18:23) The ...   Feb 12 2013, 15:01
||- - bandpass   Audacity are using libsoxr directly (native API). ...   Feb 12 2013, 16:13
||- - 2012   QUOTE (phofman @ Feb 12 2013, 16:01) QUOT...   Feb 13 2013, 15:49
||- - phofman   QUOTE (2012 @ Feb 13 2013, 16:49) I alrea...   Feb 13 2013, 20:29
|- - [JAZ]   QUOTE (db1989 @ Feb 5 2013, 11:28) Letís...   Feb 5 2013, 20:36
- - db1989   I did notice the large disparity in version number...   Feb 5 2013, 12:40
- - lvqcl   Downloaded TAC(0.7.5.938)(portable).7z. It contain...   Feb 5 2013, 15:56
- - db1989   Regardless of different options and builds, someth...   Feb 5 2013, 17:50
- - ozok   I've posted a request for a ffmpeg build with ...   Feb 5 2013, 18:09
- - db1989   QUOTE QUOTE Seems to me that those reflections of...   Feb 5 2013, 20:51
- - lvqcl   QUOTE (Alexey Lukin @ Jul 31 2008, 04:10)...   Feb 5 2013, 21:55
|- - bandpass   QUOTE (lvqcl @ Feb 5 2013, 20:55) + a thr...   Feb 5 2013, 22:39
- - bandpass   FFmpeg native is even worse going the other way (i...   Feb 5 2013, 22:29
- - mavere   QUOTE (db1989 @ Feb 5 2013, 02:28) I...   Feb 6 2013, 02:58
|- - nu774   QUOTE (mavere @ Feb 6 2013, 10:58) Apple ...   Feb 6 2013, 05:06
- - IgorC   http://src.infinitewave.ca/images/Tone/ffmpeg.png ...   Feb 6 2013, 03:43
|- - bandpass   QUOTE (IgorC @ Feb 6 2013, 02:43) ffmpeg...   Feb 6 2013, 07:48
- - Alexey Lukin   These spectral peaks are not bad only for a 1 kHz ...   Feb 6 2013, 04:33
- - LithosZA   QUOTE ve posted a request for a ffmpeg build with ...   Feb 6 2013, 08:17
- - ozok   zeranoe kindly supplied it after my request.   Feb 6 2013, 13:01
- - soulsearchingsun   So, where is TOS#8 when everyone agrees on looking...   Feb 6 2013, 14:34
|- - pdq   QUOTE (soulsearchingsun @ Feb 6 2013, 08...   Feb 6 2013, 14:46
|- - db1989   QUOTE (soulsearchingsun @ Feb 6 2013, 13...   Feb 6 2013, 15:27
|- - bandpass   QUOTE (soulsearchingsun @ Feb 6 2013, 13...   Feb 7 2013, 08:57
- - [JAZ]   As always, there is tradeoff between speed and acc...   Feb 6 2013, 23:36
|- - saratoga   QUOTE ([JAZ] @ Feb 6 2013, 17:36)...   Feb 12 2013, 16:50
|- - halb27   QUOTE ([JAZ] @ Feb 6 2013, 23:36)...   Feb 12 2013, 18:30
|- - bandpass   QUOTE (halb27 @ Feb 12 2013, 17:30) Can y...   Feb 14 2013, 08:04
- - [JAZ]   @ halb27: I haven't checked other software, b...   Feb 12 2013, 20:25
|- - lvqcl   QUOTE ([JAZ] @ Feb 12 2013, 23:25...   Feb 12 2013, 20:39
|- - knutinh   QUOTE ([JAZ] @ Feb 12 2013, 20:25...   Feb 13 2013, 16:04
|- - saratoga   QUOTE ([JAZ] @ Feb 12 2013, 14:25...   Feb 13 2013, 18:32
- - [JAZ]   @ saratoga: As I said, my knowledge of this is av...   Feb 13 2013, 22:11
|- - Rotareneg   QUOTE ([JAZ] @ Feb 13 2013, 15:11...   Feb 14 2013, 05:39
|- - saratoga   QUOTE ([JAZ] @ Feb 13 2013, 16:11...   Feb 14 2013, 07:01
- - halb27   So SSRC high precision is a good approximation to ...   Feb 14 2013, 09:07
- - bandpass   SSRC uses kaiser-windowed sinc.   Feb 14 2013, 13:48
- - halb27   Sorry, I don't know what this means in terms o...   Feb 14 2013, 19:03
|- - saratoga   QUOTE (halb27 @ Feb 14 2013, 13:03) Sorry...   Feb 14 2013, 19:12
- - bandpass   It has some problems upsampling though:   Feb 14 2013, 22:28
|- - saratoga   QUOTE (bandpass @ Feb 14 2013, 16:28) It ...   Feb 15 2013, 01:53
|- - bandpass   QUOTE (saratoga @ Feb 15 2013, 00:53) Are...   Feb 15 2013, 07:00
- - halb27   No problem for me, I'm only interested in down...   Feb 14 2013, 23:05
- - Wombat   QUOTE (bandpass @ Feb 14 2013, 23:28) It ...   Feb 15 2013, 03:42


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