glitch

#!/bin/bash

# Command line glitch script. Requires `convert' (ImageMagick) and `sox'
#
# Usage: ./glitch <image_name>
#
# The result ends up in glitch.png

export HEADER_SIZE=1000
export SOX_IN="-r 44100 -b 16 -e unsigned-integer"

# This is where the fun starts, look at the man page for sox, skip to the
# "effects" section, and try them out!

export SOX_OUT="gain -nh bandreject 5 300"
#export SOX_OUT="gain -nh bass +10 "
#export SOX_OUT="chorus 1 2 70 0.05 0.1 1.4 -t"

convert $1 tmp_input.bmp
split -d -b $HEADER_SIZE tmp_input.bmp tmp_chunk_
mv tmp_chunk_00 tmp_header.raw
cat tmp_chunk_* > tmp_body.raw
`sox $SOX_IN tmp_body.raw tmp_output.raw $SOX_OUT`

cat tmp_header.raw tmp_output.raw > tmp_result.bmp
convert tmp_result.bmp glitch.png
rm -f tmp_*