"Peter P." <peterparker@xxxxxxxxxxxx> wrote:
> Hi,
>
> didn't find an answer in the mailing list archives nor the web.
> I am trying to normalize multiple files while keeping their relative
> levels intact. Is there a way to do this with SoX in one call?
>
> How could it be done with multiple calls (eg. analyze first, then raise
> gain of all files)?
Yes, I do what fmiser said for 2),
assumes no shell-unsafe chars in filenames:
# subtract some from the $PK value if you want a level below 0 dBFS
PK=$(sox $INPUT_FILES -n stats 2>&1 | awk '/^Pk lev dB/ {print($4 * -1)}')
for i in $INPUT_FILES
do
sox $i normalized-$i gain $PK
done
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