#!/bin/bash
# rndsound.sh - make a wav from the RNG source
# must be run as root: sudo ./rndsound.sh
# needs sox toolkit:   sudo apt-get install sox libsox-fmt-all
# created by scruss on Mon Jun  3 23:07:54 EDT 2013

# length of sample, seconds
DURATION=5
# output file
OUTFILE=random$(date +%Y%m%d%H%M%S).wav
dd if=/dev/hwrng status=noxfer | sox -t u16 -c 1 -r 48000 - -c 1 $OUTFILE trim 0 $DURATION
# make the file world writeable so it's easier to delete
chmod a+w $OUTFILE
echo Wrote $OUTFILE