How to compare .wav specimen in delphi?

Question

I would like to start studying the .wav specimen by comparing two files. like returning a result of duration, accent, pronunciation in percentage. etc. or any code that comparing/analyzing the .wav.

Answer 1

What do you think about using Fourier transform? http://www.lohninger.com/fourier.html

Answer 2

For analyzing, processing or appling effects to sound files SOX - Sound eXchange is wonderful.