Extracting frequency from a .wav file

Hi
I have a .wav file and I want to extract the list of frequencies contained in the audio file.
Typically, I want to extract frequency after each 0.1 sec.
I am new to java sound and have no idea where to start from, the most I can do is to read and play the wav file using java.
An early response will be highly appreciated... :)

If you have a monophonic (single note playing) signal, you might be able to do it, but you'll need to implement a Pitch Detection Algorithm (http://en.wikipedia.org/wiki/Pitch_detection_algorithm).
If you use JSyn, which is a commercial product, then it has classes to read in .wav files, and also a class (unless this has changed with the latest version) to detect pitch in signals played through it, but you'd need to learn how to use JSyn. http://www.softsynth.com/jsyn/
Regards,
RPC

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