Code: Select all
#!/bin/sh
band=(63 80 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 12500 16000)
bband="63 80 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 12500 16000"
db="6"
br=$((RANDOM%25))
if [ -f "$1" ] ; then
file="$1"
else
echo "usage: $0 filename"
exit
fi
echo "NEW TEST"
while true; do
echo "playing original file"
play -q $file trim 0 7 gain -$db dither
echo "playing equed file"
play -q $file trim 0 7 gain -$db equalizer ${band[$br]} 0.3o $db dither
echo "$bband"
read -p "What frequency was boosted? (r for resign, q for quit) " frq
case $frq in
r ) echo "it was ${band[$br]}"; br=$((RANDOM%25));echo "NEW TEST";;
q ) echo "it was ${band[$br]}"; exit;;
${band[$br]} ) echo OK; br=$((RANDOM%25));echo; echo "NEW TEST";;
* ) echo wrong; echo REPEATING;;
esac
done
10.08.14 changed bandwidth of equalizer to 0.3 of octave and shortened play time to 7 seconds
10.13.14 added dithering