# mp3_stereo.py

# mp3_stereo.py

from struct import pack
from math import sin, pi
import wave
import random

RATE=44100

## GENERATE STEREO FILE ##
wv = wave.open('C://py//audio//test_stereo.mp3', 'w') # .mp3 or .wav
wv.setparams((2, 2, RATE, 0, 'NONE', 'compressed'))
maxVol=2**15-1.0 #maximum amplitude
wvData=""
for i in range(0, RATE*3):
    wvData+=pack('h', maxVol*sin(i*500.0/RATE)) #500Hz left
    wvData+=pack('h', maxVol*sin(i*200.0/RATE)) #200Hz right
wv.writeframes(wvData)
wv.close()