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Hi Sujoy I hail from Pakistan. I was searching on wav file processing and saw ur article on wav file processing. Thats eally wonderful and close to problem. I actually want to know how to get the frequency and amplitude of loaded file and to modify these values and play that modified file in stead of original file.

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There is not frequency and amplitude in the WAV data, there is a spectrum. Sometimes you can figure main frequencies, sometimes you cannot. Even if the sound is one pure tone, strictly speaking, its spectrum is a bit wider than one frequency point, because one fixed frequency signal (delta-function spectrum) is only a case of infinitely long signal. This is a matter of spectrum analysis.

Read this:[^][^][^][^]

AForge.NET library has Fourier transform methods, see[^].
I also found this:[^].

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Viktor Signaievskyi 19-Dec-11 15:54pm    
Sergey Alexandrovich Kryukov 19-Dec-11 17:06pm    
Nothing but true :-)
Thank you, Victor.

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