SoX: Difference between revisions
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sox (Sound Exchange) is a handy command line tool for generating, manipulating, and applying simple filters to audio. | sox (Sound Exchange) is a handy command line tool for generating, manipulating, and applying simple filters to audio. | ||
== Display information about an audio file == | |||
<source lang="bash"> | |||
sox -V clap.wav -n | |||
</source> | |||
''displays in my case...'' | |||
<source lang="text"> | |||
sox: SoX v14.0.1 | |||
Input File : 'clap.wav' | |||
Sample Size : 16-bit (2 bytes) | |||
Sample Encoding: signed (2's complement) | |||
Channels : 1 | |||
Sample Rate : 44100 | |||
Duration : 00:00.50 = 22050 samples = 37.5 CDDA sectors | |||
Endian Type : little | |||
Reverse Nibbles: no | |||
Reverse Bits : no | |||
</source> | |||
=== Synthesis === | === Synthesis === | ||
Revision as of 18:54, 22 April 2009
sox (Sound Exchange) is a handy command line tool for generating, manipulating, and applying simple filters to audio.
Display information about an audio file
sox -V clap.wav -n
displays in my case...
sox: SoX v14.0.1
Input File : 'clap.wav'
Sample Size : 16-bit (2 bytes)
Sample Encoding: signed (2's complement)
Channels : 1
Sample Rate : 44100
Duration : 00:00.50 = 22050 samples = 37.5 CDDA sectors
Endian Type : little
Reverse Nibbles: no
Reverse Bits : no
Synthesis
sox -c1 -r8000 -n -t wav - synth 0.25 sine 220 vol 0.7 > beep.wav sox -c1 -r8000 -n -t wav - synth 0.25 sine 220-440 vol 0.7 > sweep_up.wav sox -c1 -r8000 -n -t wav - synth 0.25 sine 440-220 vol 0.7 > sweep_down.wav sox -c1 -r8000 -n -t wav - synth 0.25 noise vol 0.7 > ch.wav sox -c1 -r8000 -n -t wav - synth 2.0 sine 220-1000 vol 0.7 > sweep_up_long.wav sox -c1 -r8000 -n -t wav - synth 2.0 sine 1000-220 vol 0.7 > sweep_down_long.wav sox -c1 -r8000 -n -t wav - synth 0.5 square 330 vol 0.7 > bleep.wav
Working with "raw audio"
Working with raw files allows audio to get appended together; here sox is used to take a bunch of wavs, make them raw, send them all to stdout, the repackage them as a wav file.
(for file in *; do sox "$file" -t .raw -r 44100 -sw -c 2 -; done) | \
sox -t .raw -r 44100 -sw -c 2 - -t .wav newfile.wav
source: [1]