davitenio's tumblelog

#!/bin/bash -e

# output file
output=$1

if [ -z "$output" ]; then
        echo "usage: $0 OUTFILE"
        exit
fi

CWD=`pwd`
TMP=`mktemp -d /tmp/speed_addition.XXXX`
pushd $TMP

# pause length in seconds
pause=8

for i in `seq 32`; do
        x=$(($RANDOM % 999))
        while [ $x -lt 11 ]; do
                x=$(($RANDOM % 999))
        done
        y=$(($RANDOM % 999))
        while [ $y -lt 11 ]; do
                y=$(($RANDOM % 999))
        done
        echo "$x . + . $y" | text2wave -o add$i.wav
        echo "$(($x+$y))" | text2wave -o result$i.wav
        sox add$i.wav add_with_pause$i.wav pad 3 $pause
        sox add_with_pause$i.wav result$i.wav out$i.wav
done;

sox out*wav out.wav
lame --ta speed-math --tl speed-math --tt $output --silent out.wav $CWD/$output

popd

rm -r $TMP