The mfcc tag has no wiki summary.
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1answer
53 views
MFCC feature extraction
I have a block of audio and I have performed an FFT on it. Now what I want to do is convert this FFT into a set of MFCCs, however while I know I need to do something with weighting the FFT samples ...
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2answers
65 views
Using MFCC in spoken words recognition
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 coefficients for ...
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1answer
61 views
What is the purpose of the log when computing the MFCC?
The steps of computing the Mel-Frequency Cepstrum Coefficients (MFCC) is:
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Zero padding of mfcc coefficients
I am trying to implement speech recognition using backpropagation algorithm, and I have been following this paper http://research.ijcaonline.org/volume42/number12/pxc3877946.pdf.
I have followed it ...
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0answers
32 views
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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62 views
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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1answer
76 views
What is the DTW result (applied to the MFCCs of an audio file) proportional to?
I have computed the MFCCs for two audio files and applied the DTW to both sets of coeficients for both files. Now each such pair the two files is described by one single value (computed by the DTW). ...
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2answers
88 views
How to stitch together MFCCs from multiple frames?
I am trying to record a sound two times and compare the two recordings. I am playing exactly the same sound both times (for example, play a small .wav file twice and record it each time), so I hoped ...
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100 views
Most efficient algorithm for comparing two paths
I'm working with a Continuous Hidden Markov Model, and using the Viterbi Decoder which finds the best possible path for a given sequence. Here is how my algorithm works:
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1answer
138 views
Hidden Markov Models - Distinct Observation Symbols
I really, really hope someone can help me with regards to this question.
I'm trying to implement a Hidden Markov Model (based off this paper: Here
I understand the processes, but, I do not ...
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0answers
40 views
Dynamic Time Warping - Comparing Values
Ok, so I'm trying to compare two different speech signals and I have come into a problem. Here goes:
I have split the signal into blocks, and I have computed the MFCC coefficients of each block. I ...
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1answer
97 views
Speech comparison algorithm for rating on similarities
I am trying to compare 2 speech samples and rate them on similarities. Think of someone trying to repeat a phrase, and then comparing those 2 audio files.
I started by implementing the MFCC ...
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1answer
335 views
Help calculating / understanding the MFCCs: Mel-Frequency Cepstrum Coefficients
I've been reading bits and pieces online but I just can't piece it all together. I have some background knowledge of signals / DSP stuff which should be enough prerequisites for this. I'm interested ...
3
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1answer
109 views
Acoustic features distinguishing the male and female voice?
I would like to use MFCC analysis to distinguish between a male voice and a female voice.
Are there any particular quantifiable characteristics consistent with, and exclusive to, either gender? ...
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1answer
168 views
Voice Recognition - MFCC
I have been researching about Speech Recognition and I have decided to take the MFCC approach to solving this problem of detecting whether someone is saying either "Yes" or "No". So as mentioned ...
2
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1answer
122 views
MFCC process confusion
I have read through many papers related to the Mel-frequency cepstrum coefficient (MFCC): I have some confusion about the MFCC process:
Many of the papers say that I have to do a FT (Fourier ...
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0answers
134 views
Finding similar fragment in recorded speech
I use MFCC algorithm for calculation of Mel-frequency coefficient for 2 files and DTW algorithm with Euclidean distance for finding similarity. I have results values around 400-600 on the files with ...
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2answers
882 views
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 ...
