wavplot

#!/usr/bin/python3
import matplotlib.pyplot as plt
import numpy as np
import sys
import struct
from wavhelp import *

if __name__ == "__main__":

    maxchannels = 0
    for n, f in enumerate(sys.argv[1:]):

        fig = plt.figure()

        signal, framerate, channels, BitsPerSample = wav_read(f, True)

        maxchannels = max(channels, maxchannels)

        # before looping, create the ax object required by sharex, sharey
        ax = fig.add_subplot(maxchannels, 1, 1)

        for channel in range(channels):
            ax = fig.add_subplot(maxchannels, 1, channel+1, sharex=ax, sharey=ax)
            ax.plot(signal[channel::channels], label=sys.argv[1+n] + ', channel ' + str(channel))
            plt.ylabel('Amplitude')
            plt.xlabel('Sample')

        plt.legend()

    plt.show()