SynthMaker

Extracting the Frequency - pitch extraction

Archive · 2012 2 old posts

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

rocko ·

Hi,

I would like to extract the frequency (Hz of fundamentals) of a running file (real time) as a number.

I'm aiming at the lowest part of the frequncy domain (lower than 400 Hz).

What is the best way to do this? FFT? Zero cross counting?

As an example, I need to detect 80 HZ (@ -3 DBFS) and 100 Hz (@-30 DBFS) as two separate fundamentals.

Data might be polyphonic, monophonic or complex.

I have read the thread here: Pitch Extraction

But could make a final decision here...

Your help and advice is highly regrded.

trogluddite ·

For polyphonic signals, you will need to use FFT or correlation methods - zero crossing will only work properly when there is a single pitch present.

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