Re: [LAU] Using commandline app to mark/detect sounds above a threshold

Hi Jeanette, List,

I've done this with sox and a bash script.
The script records from default audio device only when there is a sound
to record (i.e. exceeding a THRESHOLD). Each file is encoded as flac (in
order to not consume much disk space for very long runs) and the file
name contains some info such as a timestamp, an RMS value, ans some
other statistics.
I wrote the script, but some parts are taken from varius guide I've
found on the net, so I've not the credits for the original author(s).
Here is the script

#!/bin/bash
FORMAT=".flac"
DEVICE="default"
THRESHOLD="5%"

TMPFILE=tmp$FORMAT

echo $TMPFILE
while true; do
     sox -t alsa $DEVICE $TMPFILE silence 1 0.1 5% 1 1.0 5%
     DATE=$(date +%Y%m%d%H%M%S)
     LEN=$(sox $TMPFILE -n stat 2>&1 | sed -n 's#^Length
(seconds):[^0-9]*\([0-9.]*\)$#\1#p')
     MAX=$(sox $TMPFILE -n stat 2>&1 | sed -n 's#^Maximum
amplitude:[^0-9]*\([0-9.]*\)$#\1#p')
     RMS=$(sox $TMPFILE -n stat 2>&1 | sed -n 's#^RMS
amplitude:[^0-9]*\([0-9.]*\)$#\1#p')
     FREQ=$(sox $TMPFILE -n stat 2>&1 | sed -n 's#^Rough
frequency:[^0-9]*\([0-9.]*\)$#\1#p')
     mv $TMPFILE $DATE$FORMAT
     echo "[$DATE] $LEN, $MAX, $RMS, $FREQ" >> record1.log
done

On 07/11/2016 13:42, J. C. wrote:
> Nov 7 2016, Peter P. has written:
> ...
>> I tried to record myself sleeping in order to find out what I was
>> uttering. In my case I recorded the entire night, an approach which you
>> should do as well, and then strip silent parts from the recording in an
>> extra step.
> Hey hey Peter,
> that already is my approach, on the same grounds that you mention.
> ...
>> SoX has two effects, silence and vad (voice activity detector) which can
>> possibly anaylze your recording.
> Ah, I expected that SoX would be thrown in at some point. Well, I'll
> look into Sox and the other tools you mentioned. Thank you.
> ...
>> https://github.com/amsehili/auditok
>> The aubio toolkit on Debian offers two binaries:
>> aubioquiet - a command line tool to extracts quiet and loud regions
>> from a file
>> and
>> aubiocut - a command line tool to slice sound files at onset or beat
>> timestamps
> ...
> Best wishes,
>
> Jeanette
>
> --------
> When you need someone, you just turn around and I will be there <3
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>

-- 
a.
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