Bugs item #3586597, was opened at 2012-11-12 20:42 Message generated for change (Tracker Item Submitted) made by vsiivola You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=110706&aid=3586597&group_id=10706
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Vesa Siivola (vsiivola) Assigned to: Nobody/Anonymous (nobody) Summary: Output to raw differs seemingly randomly Initial Comment: Running sox several times with the same command line produces different raw output. I've assumed there's no randomness in downsampling etc., but maybe I am mistaken. $ sox -t wav file.wav -r 16000 -b 16 -c 1 -e signed-integer -t raw out.raw $ sox -t wav file.wav -r 16000 -b 16 -c 1 -e signed-integer -t raw out2.raw $ cmp out.raw out2.raw out.raw out2.raw differ: byte 1, line 1 For completeness, here is the same with verbose -V -V output: $ sox -V -V -t wav file.wav -r 16000 -b 16 -c 1 -e signed-integer -t raw out.raw sox: SoX v14.4.0 time: May 24 2012 19:42:00 issue: Ubuntu uname: Linux vsiivola-N56VM 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 x86_64 compiler: gcc 4.7.0 arch: 1288 48 88 L OMP sox DBUG wav: WAV Chunk fmt sox DBUG wav: WAV Chunk data sox DBUG wav: Reading Wave file: Microsoft PCM format, 2 channels, 44100 samp/sec sox DBUG wav: 176400 byte/sec, 4 block align, 16 bits/samp, 2613248 data bytes sox DBUG wav: 653312 Samps/chans Input File : 'file.wav' Channels : 2 Sample Rate : 44100 Precision : 16-bit Duration : 00:00:14.81 = 653312 samples = 1111.07 CDDA sectors File Size : 2.61M Bit Rate : 1.41M Sample Encoding: 16-bit Signed Integer PCM Endian Type : little Reverse Nibbles: no Reverse Bits : no sox INFO sox: Overwriting `out.raw' Output File : 'out.raw' Channels : 1 Sample Rate : 16000 Precision : 16-bit Duration : 00:00:14.81 = 237029 samples ~ 1111.07 CDDA sectors Sample Encoding: 16-bit Signed Integer PCM Endian Type : little Reverse Nibbles: no Reverse Bits : no Comment : 'Processed by SoX' sox DBUG remix: 0: sox DBUG remix: 0 0.5 sox DBUG remix: 1 0.5 sox DBUG rate: i/o=2.75625; 441:640 @ level 1 sox DBUG effects_i_dsp: 1 0.29345 1.5 sox DBUG effects_i_dsp: make_lpf(n=19199, Fc=0.00188523 beta=13.7461 dc-norm=1 scale=640) sox DBUG rate: fir_len=30 phases=640 coef_interp=0 mult=1 size=154k sox DBUG effects_i_dsp: 0.4655 0.020248 0.5 sox DBUG effects_i_dsp: make_lpf(n=409, Fc=0.479752 beta=12.8525 dc-norm=1 scale=1) sox DBUG rate: fir_len=409 dft_length=4096 Fp=0.931 att=125 mult=1 sox DBUG effects_i_dsp: 0.337778 0.0952082 0.5 sox DBUG effects_i_dsp: make_lpf(n=89, Fc=0.404792 beta=12.8525 dc-norm=1 scale=1) sox DBUG rate: fir_len=89 dft_length=4096 Fp=0.675556 att=125 mult=1 sox DBUG rate: stage=0 pre_post=0 pre=0 preload=44 sox DBUG rate: stage=1 pre_post=29 pre=0 preload=14 sox DBUG rate: stage=2 pre_post=0 pre=0 preload=204 sox INFO sox: effects chain: input 44100Hz 2 channels (multi) 16 bits 00:00:14.81 sox INFO sox: effects chain: channels 44100Hz 1 channels (multi) 32 bits 00:00:14.81 sox INFO sox: effects chain: rate 16000Hz 1 channels 32 bits 00:00:14.81 sox INFO sox: effects chain: dither 16000Hz 1 channels 16 bits 00:00:14.81 sox INFO sox: effects chain: output 16000Hz 1 channels (multi) 16 bits 00:00:14.81 $ sox -V -V -t wav file.wav -r 16000 -b 16 -c 1 -e signed-integer -t raw out.raw2 sox: SoX v14.4.0 time: May 24 2012 19:42:00 issue: Ubuntu uname: Linux vsiivola-N56VM 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 x86_64 compiler: gcc 4.7.0 arch: 1288 48 88 L OMP sox DBUG wav: WAV Chunk fmt sox DBUG wav: WAV Chunk data sox DBUG wav: Reading Wave file: Microsoft PCM format, 2 channels, 44100 samp/sec sox DBUG wav: 176400 byte/sec, 4 block align, 16 bits/samp, 2613248 data bytes sox DBUG wav: 653312 Samps/chans Input File : 'file.wav' Channels : 2 Sample Rate : 44100 Precision : 16-bit Duration : 00:00:14.81 = 653312 samples = 1111.07 CDDA sectors File Size : 2.61M Bit Rate : 1.41M Sample Encoding: 16-bit Signed Integer PCM Endian Type : little Reverse Nibbles: no Reverse Bits : no Output File : 'out.raw2' (raw) Channels : 1 Sample Rate : 16000 Precision : 16-bit Duration : 00:00:14.81 = 237029 samples ~ 1111.07 CDDA sectors Sample Encoding: 16-bit Signed Integer PCM Endian Type : little Reverse Nibbles: no Reverse Bits : no Comment : 'Processed by SoX' sox DBUG remix: 0: sox DBUG remix: 0 0.5 sox DBUG remix: 1 0.5 sox DBUG rate: i/o=2.75625; 441:640 @ level 1 sox DBUG effects_i_dsp: 1 0.29345 1.5 sox DBUG effects_i_dsp: make_lpf(n=19199, Fc=0.00188523 beta=13.7461 dc-norm=1 scale=640) sox DBUG rate: fir_len=30 phases=640 coef_interp=0 mult=1 size=154k sox DBUG effects_i_dsp: 0.4655 0.020248 0.5 sox DBUG effects_i_dsp: make_lpf(n=409, Fc=0.479752 beta=12.8525 dc-norm=1 scale=1) sox DBUG rate: fir_len=409 dft_length=4096 Fp=0.931 att=125 mult=1 sox DBUG effects_i_dsp: 0.337778 0.0952082 0.5 sox DBUG effects_i_dsp: make_lpf(n=89, Fc=0.404792 beta=12.8525 dc-norm=1 scale=1) sox DBUG rate: fir_len=89 dft_length=4096 Fp=0.675556 att=125 mult=1 sox DBUG rate: stage=0 pre_post=0 pre=0 preload=44 sox DBUG rate: stage=1 pre_post=29 pre=0 preload=14 sox DBUG rate: stage=2 pre_post=0 pre=0 preload=204 sox INFO sox: effects chain: input 44100Hz 2 channels (multi) 16 bits 00:00:14.81 sox INFO sox: effects chain: channels 44100Hz 1 channels (multi) 32 bits 00:00:14.81 sox INFO sox: effects chain: rate 16000Hz 1 channels 32 bits 00:00:14.81 sox INFO sox: effects chain: dither 16000Hz 1 channels 16 bits 00:00:14.81 sox INFO sox: effects chain: output 16000Hz 1 channels (multi) 16 bits 00:00:14.81 $ cmp out.raw out2.raw out.raw out2.raw differ: byte 1, line 1 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=110706&aid=3586597&group_id=10706 ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. 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