random_melody.py

from subprocess import Popen, PIPE, STDOUT, run
from pathlib import Path
from shlex import split
from random import randint
import sys

frequency = 400
seconds = 5
channels = 2
sequence_length = 100

command = Path("/usr/bin/alsabat")
assert command.exists()

for _ in range(sequence_length):
    if randint(0, 2):
        continue
    print(frequency, seconds)
    cmd = f"{str(command)} -F {frequency} -n {seconds * 1000} -P plughw"
    cmd = split(cmd)
    process = run(cmd, shell=False, capture_output=True)
    if randint(0, 1):
        if frequency < 800:
            frequency = frequency + 50
    elif randint(0, 1):
        frequency += 200
    else:
        if frequency > 300:
            frequency -= 100
        else:
            frequency = 200

    s = randint(0, 2)
    if s:
        if seconds < 8:
            seconds += 2
    else:
        if seconds > 4:
            seconds -= 2