Well, I've been looking for some information about reading individual frequencies from *.wav files.
I know that the wav file is structured in 1 chunk and 2 sub-chunks (format and data) as we can see in the following picture:
Name: waveRiff.png Views: 4932 Size: 10.2 KB

The part I don't still understand is when we speak about raw data. The last part is where there is the audio data. My question is how is possible to read individual frequencies from it, one by one. I mean, transforming the byte data to frequency in hertzs.
Can someone explain it?