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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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soulsearchingsun
post Feb 6 2013, 14:34
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So, where is TOS#8 when everyone agrees on looking at graphs? Not trying to troll, I just smell some bigottery.
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db1989
post Feb 6 2013, 15:27
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QUOTE (soulsearchingsun @ Feb 6 2013, 13:34) *
So, where is TOS#8 when everyone agrees on looking at graphs? Not trying to troll, I just smell some bigottery.
There’s no problem with discussing theoretical degradation of signals. IMHO, this (the degradation, not the discussion!) should be avoided wherever possible, whether we can hear it or not. If anyone had said ‘Yeah, it looks awful, and it sounds even worse!’, then TOS #8 might be relevant. I suspect that FFmpeg is encroaching onto audible territory, but I make no claim either way: rather, my point is that there’s no need for it to degrade the signal that much when other algorithms produce conversions that are many times cleaner.

This post has been edited by db1989: Feb 7 2013, 00:35
Reason for edit: adding clarification in brackets
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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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