Python for Sound Signal Processing
==================================


Python is not that as much in use for signal processing and control
theory as for example Matlab. Fortunately that last couple of years
the available packages for sound and signal processing are getting
better. This is also true for Linux used for sound and signal
processing. The different sound systems used in Linux (ALSA,
Pulseaudio, Jack, ...) are not quite easy to use and not at all
portable between different versions of and distributions of Linux. But
things are getting better.

In this chapter some examples are given for sound and signal
processing using:

PyAudio
    A Python package for audio (sound) processing. It uses the
    Portaudio library (a free, cross-platform, open-source, audio I/O
    library.

    Before using PyAudio you thus should install the development
    library for portaudio.

    Then you can install PyAudio using pip (or maybe conda).


Soundfile
    A library to read and write many formats of sound
    files. Soundfile` is the Python interface for the C library
    `libsndfile`. A disadvantage is that soundfile does not support
    mp3 files. For that you are advised to install `sox`, the swiss
    army knife of audio processing.


Signal
    A Python library for (audio) Signal Processing


Control
    A Python libray for control theory.



.. toctree::

   Audio/read_write_play_sound
   Audio/visualize_sound_signals
   Audio/processing_sound_signals
   DSP/dsp_biquads
   Control/control
   exercises