[asterisk-users] How do you convert your prompts to an asterisk-friendly format?

[Johan Wilfer]

Hi,

I've used the shells-script at the end of this email to generate 8khz 
mono wave-files for asterisk from a 144 khz recording.

The script does two things: resample & normalize the audio volume.

Anyone like to share their recommendations / scripts for doing this 
conversion? I've just converted to 8khz wave, should I convert to 
something else?

For the googler in the future this is my current script (which I hope to 
improve):

BASEDIR=`dirname $0`
PROMPTDIRS="dir1 dir2"
for dir in ${PROMPTDIRS}
do
   src=${BASEDIR}/recordings/prompts/${dir}
   dst=${BASEDIR}/generated/prompts/8khz/${dir}
   for i in ${src}/*.wav; do sox "$i"  -V -r 8000 -c 1 -q -s \
"${dst}/$(basename "$i" .wav).wav" vol 0.8; done

   normalize-audio -a -20dBFS "${dst}"/*
done


-- 
Johan Wilfer

JT Technologies & Telecommunications AB
Jabber: johan at jttech.se | Phone: +46 31 3809100