import numpy as np
import matplotlib.pyplot as plt

def sineWave( bufferSize, nbPeriod):
	deltaX = nbPeriod * 2 * np.pi / bufferSize
	xVector = np.arange( bufferSize ) * deltaX
	yVector = np.sin( xVector )
	return yVector

if __name__ == '__main__':
	waveform = sineWave( 256, 3 )
	plt.plot(waveform)
	plt.show()