How to do Fast Fourier Transform for .wav files? - Programmers Heaven

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How to do Fast Fourier Transform for .wav files?

My objective is to make a speaker recognition program using Delphi.

So far, I have managed to record my voice through a microphone into a .wav file. However, I get confused about how to process the .wav file using FFT to get the frequency domain. I have read several papers about FFT, yet they are too theoritical and when I find it difficult to put it into Delphi codes.

Any help will be greatly appreciated.
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