Music | Signals | FFT | Constant Q |
Audio Feature Extractor for Rhythm Patterns, Rhythm Histograms and Statistical Spectrum Descriptors. UCSB CREATE C++ dsp code library Technical Description here from Andreas Rauber, Vienna University of Technology Audio Feature Extraction Software 1. Java code 2. Java Code API 2. How to use it Equal tempered Scale, and constant Q transform
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Excellent paper:
An Efficient Algorithm for the Calculation of a Constant Q Transform - JC Brown
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