Pitch from Wav

[gnjunge]

Hi, Does anybody know how to calculate/extract the Pitch values from a Wave (*.wav) file? Thanks, Gidon

[mav northwind]

Hi! For this you'll have to perform a fourier transformation. Basically, your try to approximate the wave form you have by adding many sinus waves. That way you get the volume (amplitude) at certain frequencies, which will ultimately give you the pitch. Regards, mav -- Black holes are the places where god divided by 0...

[gnjunge]

Thanks for the explanation.

[gnjunge]

Hi , I succeeded in performing the FFT on my wave file and even printed the results into a nice Spectogram. But I don't know how to extract the pitch from these values. Do you have any pointers at to what function I need to perform on the FFT data? Thanks Gidon

[mav northwind]

Hi! I'm afraid I don't have any further pointers on how to calculate the pitch value. You should be able to get a pitch value by multipyling each frequency with the amplitude for this frequency and summing up the values. That way you'd get a high value if you have many loud, high-frequency bands and a low value if there are more low-frequency bands. But I must admit I don't know if that'll suite your needs. Regards, mav -- Black holes are the places where god divided by 0...