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arunreddy/clean_audio.sh

Forked from devoncrouse/clean_audio.sh
Created October 22, 2017 20:35
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Using Sox (http://sox.sourceforge.net) to remove background noise and/or silence from audio files (individually, or in batch).
Raw
clean_audio.sh
# Create background noise profile from mp3
/usr/bin/sox noise.mp3 -n noiseprof noise.prof
# Remove noise from mp3 using profile
/usr/bin/sox input.mp3 output.mp3 noisered noise.prof 0.21
# Remove silence from mp3
/usr/bin/sox input.mp3 output.mp3 silence -l 1 0.3 5% -1 2.0 5%
# Remove noise and silence in a single command
/usr/bin/sox input.mp3 output.mp3 noisered noise.prof 0.21 silence -l 1 0.3 5% -1 2.0 5%
# Batch process files
/usr/bin/find . -type f -name "*.mp3" -mmin +30 -exec sox -S --multi-threaded -buffer 131072 {} /path/to/output/{} noisered noise.prof 0.21 silence -l 1 0.3 5% -1 2.0 5% \;
# Remove insignificant files
/usr/bin/find . -type f -name "*.mp3" -mmin +30 -size -500k -delete
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