The cepstral-analysis tag has no wiki summary.
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Why is Cepstral Coefficients decorrelated?
Why is the Mel Frequency Cepstral Coefficient (MFCC) decorrelated in each frame; as far as I understand, this is because of the step where we take the Discrete cosine transform (DCT) of the log ...
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How to measure the short-time change in an audio signal?
The choice of frame length for calculating the Mel Frequency Cepstral Coefficients of a signal, depend on the how much the signal change over a small time scale.
I guess that human speech change ...
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Length of frames for calculating cepstral coefficients
For audio classification we are using the cepstral coefficients and their derivatives. Which I calculate using the Matlab libary voicebox.
I am looking for some literature for how to choose the frame ...
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DFT, cepstrum, LPC for feature extraction
I am a newbie in speech processing and experimenting to get a feel. I have extracted some speech segments using a window function and I want to find distance between a pair of segments. First, I took ...
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How to decide the number of cepstral coefficients?
For audio classification we are using cepstral coefficients, but how should I decide the number of coefficients?
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Why does the excitation signal appear, separated, at high quefrencies in the cepstrum?
So, I've just begun a speech and language processing course and have found the explanation of the process of getting the cepstrum of a signal and its properties a little confusing. The following is a ...
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High Level Process, Calculating Cepstrum When You Only Have Spectrum
I am not a DSP expert, so I would like someone to check my thought process:
I have a text file representing the spectrum (calculated by some FFT hardware), and I'd like to calculate a cepstrum. I'm ...
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200 views
voice recognition vs speech recognition MFCC
I have a basic understanding of the acoustic preprocessing involved in speech recognition: divide the speech into frames, find the mel frequency cepstral coefficients of each frame, construct a ...
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How do I interpret the DCT step in the MFCC extraction process?
In most audio processing tasks, one of the most used transformations is MFCC (Mel-frequency cepstral coefficients).
I mostly know the math that's behind the MFCC: I understand both the filterbank ...
