Added aubio and fftw libs, on which audio features/FFT are based
Added initial implementation of audio feature tracking channel, with FFT, spectral features, and a dynamic array of timestamped onsets
Set attack/decay to 0.0 by default, move aubio processor pointers to public access, added compareSpectrumToReference utility/printout function to compare FFTs
Removed attack/decay/gain from ofxAudioFeaturesChannel, added updateSmoothedSpectrum(vector<float>& ref, float attack, float decay) to update (potentially many different) smoothedSpectrums
Updated aubio to a universal binary on OS X
Added updateSmoothedSpectrum with attackMult, decayMult for separate coefficients array
Renamed usedFeatures map to usingFeatures, added usingOnsets, usingPitch, and private usingPhaseVocoderSpectrum. Smoothed spectrum attack/decay values are automatically scaled to be applied at hopSize rate, but produce a bufferSize rate effect using powf(XXX, hopSize/bufferSize)
Added float.h, cmath headers (for fabs() function, FLT_MAX, FLT_EPSILON, etc.), moved usingPhaseVicoderSpectrum to public (from private)
Added OS X CoreAudio, AudioToolbox functions to control audio device input/output volume
Merge branch 'master' of github.com:paulreimer/ofxAudioFeatures
Upgraded to latest aubio develop branch, now using vDSP/Accelerate Framework FFT, and with more features and functions
Added resample function to ofxAudioFeaturesChannel, which uses decimation/averaging downsampling.