title: How to take the first 13 coefficients in MFCC
body: <p>I have a trouble with MFCC. I have followed the tutorial step by step. After step "Windowing", I compute DFT for every frames. My question is: Will the remaining steps, including "Mel-filter bank", "log" and "DCT", apply to every frames? I feel confused because in step "DCT", we will take the first 13 coefficients which was computed before. So what frames we have to take it? I really need a clear explanation :(</p>