#!/bin/sh
if [ $# -ne 1 ]
then
  exit 1
fi
#sox $1 -r 8000 -c1 ${1%wav}gsm lowpass 4000 compand 0.02,0.05 -60,-60,-30,-10,-20,-8,-5,-8,-2,-8 -8 -7 0.05 resample -ql 
sox $1 -r 8000 -c 1 ${1%wav}gsm