Hi, I'm new to audio processing, so I'm hoping someone can help guide me. I'm using C# with Fmod. I'd like to find the MFCC of an MP3 file. How would I go about doing this? Here's what I got from Wikipedia, and my psuedocode for it: 1) Take the Fourier transform of (a windowed excerpt of) a signal. Code: I use getSpectrum with the FMOD_DSP_FFT_WINDOW_TRIANGLE parameter 2)Map the powers of the spectrum obtained above onto the mel scale, using triangular overlapping windows. I go through the spectrum array and use this equation on each value: Code: mel = 1127.01048log e (1+f/700) Take the logs of the powers at each of the mel frequencies. I then go through the new mel-array and take the log of each : Code: mLog = (Math.log(melArray)) Take the discrete cosine transform of the list of mel log powers, as if it were a signal. (Then find amplitude of DCT result) I'm not sure what I do here. How do I calculate the DCT? Thanks for any help. If you know any source code for the DCT (pref. .NET/Java), it would be much appreciated.