Which audio analyzer software goes above 20 kHz?

Most software package help files inclusde an explanation of the FFT process, for the 'user level'.

One path is to install ARTA or TrueRTA, start at the 'Spectrum Analysis' chapter and just dive in.
In ARTA it is chapter 2 IIRC.

You could also start here: YouTube

But you will always hit roadblocks, and you can come back here with specific questions.

Jan
 
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