My question is, what frequency ranges do MFCCs correspond to?
My line of thinking thus far is that if your highest frequency in the signal was 8000 Hz, you could convert to Mels (= 2834 Mels), take 13 (for 13 MFCCs) evenly spaced measurements (0, 118.12, 236.24, etc.) and then convert back to Hertz to get start and end points for where the triangular windowing functions would be. Does that mean that MFCC1 corresponds to 0 to 77.5 Hz, MFCC2 corresponds to 77.5 to 163.5 Hz (approx, I know there is some rounding here)? How could I visualize these triangular windows to see what frequency value had the most weight (since I guess the frequencies further from the middle of the triangle would be represented less)?