Reading Frequencies from Wave File

[pyrospade]

I am looking for a way to read a wave file into memory and then determine the frequency ( or frequencies ) of the sound in the file. The wave file would only contain one voice. I would like to convert the frequencies into pitch, but honestly that "should" be the easy part.

Does anyone have a code sample for reading this kind of data from a wave file or at least some tips to push me in the right direction?

[sohguanh]

I believe the easiest way is to search for Open Source libraries to help you. The library should help you to load .wav file into memory and determine frequencies of sound.

[pyrospade]

Thank you, I appreciate that. I am trying to find a way to do it manually so that I can define it in my own class and implement it in different languages, such as C# or Java.

[modoran]

C# has P/Invoke and Java has JNI, where is theproblem if the library is written in C/C++ ? Just write your own wrapper in C#/java around that.

[pyrospade]

It's not that there is a problem with the library being written in C++, I guess I just want to know how it works and be able to implement it myself. If I write a program using someone else's library, then it doesn't seem like I really did anything at all. I am sure that I am going about it the hard way, but I guess that is kind of the point.

Thank you for your patience and understanding!

[pyrospade]

Anybody out there know how this is implemented?

[Zeillinger]

This guy [1] wrote a library, You don't have to use it if you don't want to but you should look at notes and the description of .wav files on this page. This might be useful.

[1] http://www.codeproject.com/KB/audio-video/CWave.aspx