
MFCC - Significance of number of features - Signal Processing Stack ...
Feb 17, 2016 · 4 I have been doing some readings on the computation of Mel-Frequency Cepstral Coefficients (MFCC) and further use of Vector Quantizers (VQ) for recognition purposes. I am …
MFCC calculation - Signal Processing Stack Exchange
Where is the my mistake in calculation? Cheers! Celdor EDIT: I understand now why the first MFCC coeficient is very low. If I look at DCT II, its first component is just a straight line: This is equivalent of …
What's the correct graphical interpretation of a series of MFCC vectors?
I'm studying speech-recognition, in particular the use of MFCC for feature extraction. All examples I've found online tend to graph a series of MFCC extracted from a particular utterance as follows (
What is the purpose of the log when computing the MFCC?
The steps of computing the Mel-Frequency Cepstrum Coefficients (MFCC) are: Frame blocking -> Windowing-> abs(DFT) -> Mel filter bank-> Sum coefficients for each filter-> Logarithm -> DCT But …
Using MFCC in spoken words recognition - Signal Processing Stack …
May 10, 2013 · We're trying to implement a "simple" speech recognition application in MATLAB (isolated words from a very limited dictionary). We've been trying the following methods: Extract MFCC …
Understanding MFCC - Signal Processing Stack Exchange
Jul 23, 2020 · MFCC is represented by 39 values for each window frame. 12 values are the mel filter-bank and we get 13th value by taking DCT [ Is this right ]? So rest are the delta and double delta and …
discrete signals - Confusion with regards to STFT and MFCCs - Signal ...
K$ sub-bands, (rows). MFCC: Once you have the STFT computed, you can go ahead and use that as a stepping stone for computing the MFCC's. Regarding your question, you seem to be confusing the …
How to calculate MFCCs over a narrow frequency range?
However, my MFCC matrix outputs as a bunch of NaNs, presumably because the range is so narrow. This either means that MFCCs are an inappropriate measure in general for such a narrow frequency …
filters - Signal Processing Stack Exchange
Jan 29, 2020 · In the book here, they apply liftering, as a final step of MFCCs features extraction, to isolate the system component by multiplying the whole cepstrum by a rectangular window centred on …
Sinusoidal liftering in implementations of MFCC
Jan 3, 2017 · Some implementations of MFCC apply sinusoidal liftering as the final step in calculations of MFCC. It is claimed that speech recognition can be significantly improved. For instance, if …