=========================
 Visualize Sound Signals
=========================

We will extend the non blocking code for playing audio to visualize
the audio signal in real time while playing it. We start with a simple
display of the audio signal in matplotlib. For a mono signal we plot
$x(t)$. For each buffer (chunk) of data in the audio file we plot the
amplitude as function of time. For a stereo signal we plot both the
left $x_L(t)$ signal and the right signal $x_R(t)$.


.. literalinclude:: read_play_visualize.py
   :language: python
   :linenos: