Op 02-05-17 om 01:19 schreef Steve the Fiddle: > >>> I tested it, and unfortunately it is very sensitive to harmonics, >>> causing it to output s too high frequency. >> Bart - Thanks that help me - before I start with the code. This is >> absolute not what i am looking for. I need a "frequencie meter" c.q >> tracker who is exact and stable. > You won't find an "exact" frequency tracker. The best you can hope for > is a "reasonably reliable approximation". > > The "Yin" algorithm gives pretty good results for single musical notes > and other waveforms that are reasonably periodic, but it's quite > computationally expensive. See Alain de Cheveigne and Hideki > Kawahara's article "YIN, a Fundamental Frequency Estimator for Speech > and Music" > > FFT is a well known method for spectral analysis. See > https://en.wikipedia.org/wiki/Fast_Fourier_transform > > For "instantaneous frequency", see the "Hilbert Transform" > https://en.wikipedia.org/wiki/Hilbert_transform > > For harmonic signals, you could look at the cepstrum. See: > https://en.wikipedia.org/wiki/Cepstrum > > Steve >
Steve - that's what I need to know, thanks I will follow the links. Regards Crojav >> Regards Crojav >> >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Faudiostream-users mailing list >> Faudiostream-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/faudiostream-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Faudiostream-users mailing list Faudiostream-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/faudiostream-users
