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A small collection of pitch tracking algorithms in C
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FFT.c
FFT.h first commit
QIFFT.c
QIFFT.h
README
correlation.c
correlation.h
pitch.c
pitch.h
pitchutils.c
pitchutils.h
zerocross.c
zerocross.h

README

Pitch tracking methods:
    - Zero crossing rate estimator    
    - FFT with Quadratic Interpolation (QIFFT)
    - Autocorrelation
    - Average magnitude difference function (AMDF)
    - YIN estimator
    
Technical notes:
    - Correlation methods are computed in the frequency domain with FFT
    - Implementation relies on the kissfft library (MIT licensed)
    - Tests (to be added) rely on libsndfile (GPL licensed)
    
License: MIT

Copyright (C) 2012 Matt Esch

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

    

TODO:
    - Clean up formatting and check for ANSI compliance
    - Create MAKE file
    - Add VS 2010 project files
    - Add test files
    - Add Android binding
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