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The SFA-MaxLib is a collection of Max/MSP objects developed in the context of the VCI4DMI. It includes functions and utilities in the form of FTM externals, FTM abstractions and Max abstractions. FTM is a shared library for Max/MSP developed by IRCAM, which provides a small and simple real-time object system and a set of optimized services to be used within Max/MSP externals.

List of FTM Externals: sfa.eig - eigenvalues; sfa.inputcombinations - combination generator; sfa.levinson - levinson-durbin recursion; sfa.lpc2cep - lpc to cepstra conversion; sfa.rastafilt - rasta filter; sfa.rmd - relative mean difference; sfa.roots - polynomial roots;

List of Abstractions: sfa.bark.maxpat - energy of the Bark bands from time domain frame;sfa.bark2hz_vect.maxpat - Herts to Bark conversion;sfa.barkspect.maxpat - energy of the Bark bands from spectrum; sfa.ceil.maxpat - ceil function; sfa.featfluxgate.maxpat - gated distance on stream of feature vectors; sfa.fft2barkmx.maxpat - utility sub-abstraction of sfa.bark; sfa.fft2barkmxN.maxpat - utility sub-abstraction of sfa.barkspect; sfa.hynek_eq_coeff.maxpat - hynek equalization coefficients; sfa.hz2bark.maxpat - Hertz to Bark conversion; sfa.hz2bark_vect.maxpat - Hertz to Bark conversion for vectors; sfa.hz2mel.maxpat - Hertz to Mel conversion; sfa.idft_real_coeff.maxpat - utility sub-abstraction of sfa.rasta-plp; sfa.maxminmem.maxpat - minimum and maximum of a stream of data; sfa.mfcc.maxpat - MFCC coefficients; sfa.modalphafilter.maxpat - 1st order IIR lowpass on a stream of vectors; sfa.nonlinfeqscale.maxpat - linear spectrum to Bark or Mel scale conversion; sfa.rasta-plp.maxpat - PLP and RASTA-PLP coefficients; sfa.spectmoments.maxpat - 4 spectral moments (centroid, deviation, skewness, kurtosis); sfa.3spectmoments+flatness.maxpat - 3 spectral moments (centroid, deviation, skewness) and the spectral flatness; sfa.spectralflux.maxpat - spectral flux on stream of spectrum vectors; sfa.spectralfluxgate.maxpat - gated spectral flux on stream of spectrum vectors; sfa.std.maxpat - standard deviation; sfa.win_to_fft_size.maxpat - smaller FFT size given frame size; sfa.GCemulator.maxpat 3D gestural controller emulator;
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sfa.3spectmoments+flatness.maxpat External "3 spectral moments (centroid, deviation, skewness) and the spectral flatness Abstraction"

sfa.bark.maxpat External energy of the Bark bands from time domain frame Abstraction

sfa.bark2hz_vect.maxpat External Herts to Bark conversion Abstraction

sfa.barkspect.maxpat External energy of the Bark bands from spectrum Abstraction

sfa.ceil.maxpat External ceil function Abstraction

sfa.eig External eigenvalues FTM External

sfa.featfluxgate.maxpat External gated distance on stream of feature vectors Abstraction

sfa.fft2barkmx.maxpat External utility sub-abstraction of sfa.bark Abstraction

sfa.fft2barkmxN.maxpat External utility sub-abstraction of sfa.barkspect Abstraction

sfa.GCemulator.maxpat External 3D gestural controller emulator Abstraction

sfa.hynek_eq_coeff.maxpat External hynek equalization coefficients Abstraction

sfa.hz2bark.maxpat External Hertz to Bark conversion Abstraction

sfa.hz2bark_vect.maxpat External Hertz to Bark conversion for vectors Abstraction

sfa.hz2mel.maxpat External Hertz to Mel conversion Abstraction

sfa.idft_real_coeff.maxpat External utility sub-abstraction of sfa.rasta-plp Abstraction

sfa.inputcombinations External combination generator FTM External

sfa.levinson External levinson-durbin recursion FTM External

sfa.lpc2cep External lpc to cepstra conversion FTM External

sfa.maxminmem.maxpat External minimum and maximum of a stream of data Abstraction

sfa.mfcc.maxpat External MFCC coefficients Abstraction

sfa.modalphafilter.maxpat External 1st order IIR lowpass on a stream of vectors Abstraction

sfa.nonlinfeqscale.maxpat External linear spectrum to Bark or Mel scale conversion Abstraction

sfa.rasta-plp.maxpat External PLP and RASTA-PLP coefficients Abstraction

sfa.rastafilt External rasta filter FTM External

sfa.rmd External relative mean difference FTM External

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