Okay, I think I've figured it out. The data size portion of a WAVE file only allows for 4GB samples. The samples I'm working with are much larger than that. On Wed, 6 Oct 2021 at 13:45, Lee Jones <ljkenny@xxxxxxxxx> wrote: > > Ah you're right. > > > 00000000 52 49 46 46 00 00 00 00 57 41 56 45 66 6d 74 20 |RIFF....WAVEfmt | > > I'll try to hack the file and see what happens. > > Thanks. > > On Wed, 6 Oct 2021 at 13:12, Jeff Learman <jjlearman@xxxxxxxxx> wrote: > > > > Most likely the headers are incorrect. Hex-dump the beginning of the file and see how it looks given this format: http://soundfile.sapp.org/doc/WaveFormat/ > > > > My guess is that the DATA chunk header has a zero length. If so, it's easily fixed using a hex editor. > > > > > > On Wed, 6 Oct 2021 at 02:51, Lee Jones <ljkenny@xxxxxxxxx> wrote: > >> > >> It's almost certainly my fault, but I'm perplexed as to how to fix it. > >> > >> > # File type looks like a standard WAV(E) file > >> > ljkenny:~$ file manchester_app_test.wav > >> > manchester_app_test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 48000 Hz > >> > > >> > # SoX status reports file as being 0 seconds (it's actually 1:10hrs long. > >> > ljkenny:~$ sox manchester_app_test.wav -n stat > >> > Samples read: 0 > >> > Length (seconds): 0.000000 > >> > Scaled by: 2147483647.0 > >> > Maximum amplitude: 0.000000 > >> > Minimum amplitude: 0.000000 > >> > Midline amplitude: 0.000000 > >> > Mean norm: -nan > >> > Mean amplitude: -nan > >> > RMS amplitude: -nan > >> > Maximum delta: 0.000000 > >> > Minimum delta: 0.000000 > >> > Mean delta: -0.000000 > >> > RMS delta: -0.000000 > >> > Rough frequency: -2147483648 > >> > > >> > Probably text, not sound > >> > > >> > # Trimming all silence to 2 seconds > >> > ljkenny:~$ sox -V manchester_app_test.wav manchester_app_test-trimmed.wav silence -l 1 0.1 1% -1 2.0 1% > >> > sox: SoX v14.4.2 > >> > sox INFO formats: detected file format type `wav' > >> > > >> > Input File : 'manchester_app_test.wav' > >> > Channels : 2 > >> > Sample Rate : 48000 > >> > Precision : 16-bit# File type looks like a standard WAV(E) file > >> > ljkenny:~$ file manchester_app_test.wav > >> > manchester_app_test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 48000 Hz > >> > > >> > # SoX status reports file as being 0 seconds (it's actually 1:10hrs long. > >> > ljkenny:~$ sox manchester_app_test.wav -n stat > >> > Samples read: 0 > >> > Length (seconds): 0.000000 > >> > Scaled by: 2147483647.0 > >> > Maximum amplitude: 0.000000 > >> > Minimum amplitude: 0.000000 > >> > Midline amplitude: 0.000000 > >> > Mean norm: -nan > >> > Mean amplitude: -nan > >> > RMS amplitude: -nan > >> > Maximum delta: 0.000000 > >> > Minimum delta: 0.000000 > >> > Mean delta: -0.000000 > >> > RMS delta: -0.000000 > >> > Rough frequency: -2147483648 > >> > > >> > Probably text, not sound > >> > > >> > # Trimming all silence to 2 seconds > >> > ljkenny:~$ sox -V manchester_app_test.wav manchester_app_test-trimmed.wav silence -l 1 0.1 1% -1 2.0 1% > >> > sox: SoX v14.4.2 > >> > sox INFO formats: detected file format type `wav' > >> > > >> > Input File : 'manchester_app_test.wav' > >> > Channels : 2 > >> > Sample Rate : 48000 > >> > Precision : 16-bit > >> > Sample Encoding: 16-bit Signed Integer PCM > >> > Endian Type : little > >> > Reverse Nibbles: no > >> > Reverse Bits : no > >> > > >> > sox INFO sox: Overwriting `manchester_app_test-trimmed.wav' > >> > > >> > Output File : 'manchester_app_test-trimmed.wav' > >> > Channels : 2 > >> > Sample Rate : 48000 > >> > Precision : 16-bit > >> > Sample Encoding: 16-bit Signed Integer PCM > >> > Endian Type : little > >> > Reverse Nibbles: no > >> > Reverse Bits : no > >> > Comment : 'Processed by SoX' > >> > > >> > sox INFO sox: effects chain: input 48000Hz 2 channels > >> > sox INFO sox: effects chain: silence 48000Hz 2 channels > >> > sox INFO sox: effects chain: output 48000Hz 2 channels > >> > > >> > # Output file is 44 Byes. > >> > ljkenny:~$ ls -lh manchester_app_test* > >> > -rw-r----- 1 joneslee primarygroup 44 Oct 6 07:41 manchester_app_test-trimmed.wav > >> > -rw-r----- 1 joneslee primarygroup 762M Oct 5 19:14 manchester_app_test.wav > >> > Sample Encoding: 16-bit Signed Integer PCM > >> > Endian Type : little > >> > Reverse Nibbles: no > >> > Reverse Bits : no > >> > > >> > sox INFO sox: Overwriting `manchester_app_test-trimmed.wav' > >> > > >> > Output File : 'manchester_app_test-trimmed.wav' > >> > Channels : 2 > >> > Sample Rate : 48000 > >> > Precision : 16-bit > >> > Sample Encoding: 16-bit Signed Integer PCM > >> > Endian Type : little > >> > Reverse Nibbles: no > >> > Reverse Bits : no > >> > Comment : 'Processed by SoX' > >> > > >> > sox INFO sox: effects chain: input 48000Hz 2 channels > >> > sox INFO sox: effects chain: silence 48000Hz 2 channels > >> > sox INFO sox: effects chain: output 48000Hz 2 channels > >> > > >> > # Output file is 44 Byes. > >> > ljkenny:~$ ls -lh manchester_app_test* > >> > -rw-r----- 1 joneslee primarygroup 44 Oct 6 07:41 manchester_app_test-trimmed.wav > >> > -rw-r----- 1 joneslee primarygroup 762M Oct 5 19:14 manchester_app_test.wav > >> > >> Any help would be gratefully received. > >> > >> > >> _______________________________________________ > >> Sox-users mailing list > >> Sox-users@xxxxxxxxxxxxxxxxxxxxx > >> https://lists.sourceforge.net/lists/listinfo/sox-users > > > > _______________________________________________ > > Sox-users mailing list > > Sox-users@xxxxxxxxxxxxxxxxxxxxx > > https://lists.sourceforge.net/lists/listinfo/sox-users _______________________________________________ Sox-users mailing list Sox-users@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/sox-users
