#!/bin/bash

# this script is written by Peter Plessas
# and was published through http://plessas.mur.at
# It is released under the GNU/GPL license
# and requires sox
#
# This is version 20161211

# check if the input file exists and is readable
if [ ! -f $1 ]; then echo "Input file does not exist or is not readable"; exit 1; fi

# if two arguments, we set threshold to default value 0.02
if [ "$#" -lt 3 ]
then 
	sox $1 $2 silence 1 0 2% reverse silence 1 0 2% reverse
else 

	sox $1 $2 silence 1 0 $3 reverse silence 1 0 $3 reverse
fi