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megastef/sound-measure.sh

Created April 3, 2018 09:05
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SOX, record sound, output sox stats decibel value as JSON
Raw
sound-measure.sh
# Script to putput dB level from microphone
# output:
# {"db": -87.03}
# {"db": -86.87}
# ...
while [ 1 ]
do
sox -b 32 -e unsigned-integer -r 96k -c 2 -d --clobber --buffer $((96000*2*10)) /tmp/soxrecording.wav trim 0 1 2> /dev/null
sox /tmp/soxrecording.wav -n stats 2>&1 >/dev/null | grep "RMS lev dB" | awk '{print "{\"db\": " $4 "}"}'
done
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