beep

#!/usr/bin/env python3

import datetime
import json
import numpy
import os
import pyaudio
import subprocess
import sys
import threading
import time

if __name__ == "__main__":
  f = 440
  T = 0.15
  A = 0.5
  wave = 'sq'

  if len(sys.argv) >= 2:
      f = float(sys.argv[1])
  if len(sys.argv) >= 3:
      T = float(sys.argv[2])
  if len(sys.argv) >= 4:
      A = float(sys.argv[3])
  if len(sys.argv) >= 5:
      wave = sys.argv[4]

  samples = numpy.arange(44100 * T) / 44100.0
  if wave == 'sq':
      wave = min(A, 1) * 127 * (numpy.mod(numpy.floor(samples * f * 2), 2) * 2 - 1)
  elif wave == 'sin':
      wave = min(A, 1) * 127 * (numpy.sin(2 * numpy.pi * f * samples))

  pa = pyaudio.PyAudio()
  stream = pa.open(format=pyaudio.paInt8,
    channels=1,
    rate=44100,
    output=True)
  stream.write(numpy.array(wave, dtype = numpy.int8))
  stream.stop_stream()
  stream.close()