04-serial-proc.py - Chaining processes on a single source.
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This example shows how to chain processes on a single source.
Every processing object (ie the ones that modify an audio source) have
a first argument called "input". This argument takes the audio object
to process.

Note the input variable given to each Harmonizer.

.. code-block:: python

    from pyo import *
    
    s = Server().boot()
    s.amp = 0.1
    
    # Creates a sine wave as the source to process.
    a = Sine().out()
    
    # Passes the sine wave through an harmonizer.
    h1 = Harmonizer(a).out()
    
    # Then the harmonized sound through another harmonizer.
    h2 = Harmonizer(h1).out()
    
    # And again...
    h3 = Harmonizer(h2).out()
    
    # And again...
    h4 = Harmonizer(h3).out()
    
    s.gui(locals())

