Skip to content

Instantly share code, notes, and snippets.

@CTimmerman

CTimmerman/pygame-play-tone.py

Forked from ohsqueezy/pygame-play-tone.py
Created January 18, 2021 19:22
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save CTimmerman/e7c27171939083981cfb1f8689cf338d to your computer and use it in GitHub Desktop.
Save CTimmerman/e7c27171939083981cfb1f8689cf338d to your computer and use it in GitHub Desktop.
Download ZIP
Play a 440 Hz tone in Pygame
Raw
pygame-play-tone.py
# Generate a 440 Hz square waveform in Pygame by building an array of samples and play
# it for 5 seconds. Change the hard-coded 440 to another value to generate a different
# pitch.
#
# Run with the following command:
# python pygame-play-tone.py
from array import array
from time import sleep
import pygame
from pygame.mixer import Sound, get_init, pre_init
class Note(Sound):
def __init__(self, frequency, volume=.1):
self.frequency = frequency
Sound.__init__(self, self.build_samples())
self.set_volume(volume)
def build_samples(self):
period = int(round(get_init()[0] / self.frequency))
samples = array("h", [0] * period)
amplitude = 2 ** (abs(get_init()[1]) - 1) - 1
for time in range(period):
if time < period / 2:
samples[time] = amplitude
else:
samples[time] = -amplitude
return samples
if __name__ == "__main__":
pre_init(44100, -16, 1, 1024)
pygame.init()
Note(440).play(-1)
sleep(5)
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment