ChatGPT-generated bash script that generates an 808 clap from scratch

808_clap_chatgpt.bash

#!/bin/bash
duration=0.1
decay=0.3
volume=0.6

dd if=/dev/urandom bs=1 count=$((44100*duration)) 2>/dev/null | \
    od -An -vtx1 | \
    tr ' ' '\n' | \
    while read hex; do
        byte=$(printf "%d" "0x$hex")
        if ((byte > 127)); then
            byte=$((byte - 256))
        fi
        echo "$byte"
    done > white_noise.raw

f1=2000
f2=20000
q=100
w0=$(echo "2*a(1)*($f2-$f1)/44100" | bc -l)
alpha=$(echo "s($w0)/(2*$q)" | bc -l)
cosw0=$(echo "c($w0)" | bc -l)
a0=1
a1=$(echo "-2*$cosw0" | bc -l)
a2=1
b0=$(echo "(1-$cosw0)/2" | bc -l)
b1=$(echo "1-$cosw0" | bc -l)
b2=$(echo "(1-$cosw0)/2" | bc -l)
x1=0
x2=0
y1=0
y2=0
sample_num=0
cat white_noise.raw | while read sample; do
    x0=$sample
    y0=$(echo "($b0/$a0)*$x0 + ($b1/$a0)*$x1 + ($b2/$a0)*$x2 - ($a1/$a0)*$y1 - ($a2/$a0)*$y2" | bc -l)
    x2=$x1
    x1=$x0
    y2=$y1
    y1=$y0
    if ((sample_num < decay*44100)); then
        echo $(echo "$volume*$y0/$decay" | bc -l)
    else
        echo "0"
    fi
    ((sample_num++))
done > clap_processed.raw

max_val=$(cat clap_processed.raw | tr '\n' ' ' | tr -s ' ' | tr ' ' '\n' | sort -n | tail -n 1)
cat clap_processed.raw | while read sample; do
    echo $(echo "$sample*32767/$max_val" | bc -l)
done > clap_normalized.raw

echo -ne "$(printf 'RIFF%.4sWAVE' '')$(printf 'fmt %.4s\x10\x00\x00\x00\x01\x00\x01\x00\x80\x3e\x00\x00\x00\x7d\x00\x00\x02\x00\x10\x00data%.4s' '')$(cat clap_normalized.raw | tr '\n' ' ' | tr -s ' ' | tr ' ' '\n' | while read sample; do echo -ne $(printf '\\x%02x\\x%02x' $((sample & 0xff)) $((sample >> 8))); done)" > clap.wav

rm white_noise.raw clap_processed.raw clap_normalized.raw