Hi users,

I am writting a program to extract audio features but the autoCorr, xCorr always give me a 0 value. ZeroX always give me 0.5 value.

This is a brief of the source code:

//Definitions for features extraction
adc => FFT fft =^ RMS rms => blackhole;
fft =^ RollOff rolloff => blackhole;
fft =^ Centroid centroid => blackhole;
fft =^ Flux flux => blackhole;
fft =^ ZeroX zerox => blackhole;
adc => AutoCorr autoCorr => blackhole;
fft =^ XCorr  xCorr => blackhole;

    //Feauture extraction

    fft.upchuck() @=> UAnaBlob blobFFT;

    rms.upchuck() @=> UAnaBlob blobRMS;

    (blobRMS.fval(0) * 100000) => volumenInst;



    rolloff.upchuck() @=> UAnaBlob blobRollOff;



    (blobRollOff.fval(0)*srate )/2 => rollOffInst ;



    centroid.upchuck() @=> UAnaBlob blobCentroid;



    (blobCentroid.fval(0)*srate)/2=> centroideInst;

    flux.upchuck() @=> UAnaBlob blobFlux;

    blobFlux.fval(0) => similitudInst;
    zerox.upchuck() @=> UAnaBlob blobZeroX;



    blobZeroX.fval(0) => zeroXInst;    ///<-----------



    xCorr.upchuck() @=> UAnaBlob blobxCorr;  



    blobxCorr.fval(0) => correlacionCruzadaInst;  ///<-----------    



    autoCorr.upchuck() @=> UAnaBlob blobAutocorrelacion;



    blobAutocorrelacion.fval(0) => autocorrelacionInst; ///<-----------





Kindy Regards.






-- 
Fernando Alonso Martín
Lualobus@gmail.com



http://roboticnaturalinteraction.com