audio DSP demo (WARNING: LOUD)

audio_demo.py

#!/usr/bin/env python3

# requires `pip install pyaudio`

import pyaudio

# most DSP software on the market uses floats -1 to 1
# we instead use ints 0 to 255, due to a quirk of pyaudio
single_rotation = [int(i * 255 / 99) for i in range(100)]
# or:
# single_rotation = [random.randint(0, 255) for i in range(100)]
# or:
# single_rotation = [(i < 50) * 255 for i in range(100)]

# duplicate a bunch
one_second = single_rotation * 441

p = pyaudio.PyAudio()

stream = p.open(44100, channels=1, format=pyaudio.paUInt8, output=True)
stream.write(bytes(one_second))
stream.close()