title: Increase/Decrease Play Speed of a WAV file Python
body: <p>I want to change play speed (increase or decrease) of a certain WAV audio file using python wave module.</p>
  
  <p>I tried below thing :</p>
  
  <ol>
  <li>Read frame rate of input file.</li>
  <li>Double the frame rate.</li>
  <li>Write a new wave file with increased frame rate using output_wave.setparams() function.</li>
  </ol>
  
  <p>But its not working out.</p>
  
  <p>Please suggest.</p>
  
  <p>Thanks in Advance,</p>