title: How to plot a wav file
body: <p>I have just read a wav file with scipy and now I want to make the plot of the file using matplotlib, on the "y scale" I want to see the aplitude and over the "x scale" I want to see the numbers of frames! 
  Any help how can I do this??
  Thank you!</p>
  
  <pre><code>from scipy.io.wavfile import read
  import numpy as np
  from numpy import*
  import matplotlib.pyplot as plt
  a=read("C:/Users/Martinez/Desktop/impulso.wav")
  print a
  </code></pre>