Synchronous and Asynchronous callbacks

Synchronous playback

import pygame

def sync_playback(fileName):
    pygame.mixer.init()
    pygame.mixer.music.load(fileName)
    pygame.mixer.music.play()

sync_playback('../../data/sample_test_file.wav')

Asynchronous playback

import sounddevice as sd
import soundfile as sf
import time

def async_playback(fileName):
    data, fs = sf.read(fileName)
    sd.play(data, fs)
    return data, fs

data, fs = async_playback('../../data/sample_test_file.wav')
print ('This program is playing the audio file asynchronously')

time.sleep(1)
sd.stop()
print('sound device stopped')