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I defined these denoise,lfcc,vqext function in separate matlab file. should i need to create separate interpreted MATLAB Function for each function?
Fm = 100;%length of Frames excursion
framelnc = 100;%length of Frames excursion
Fn = 256;%length of Frames sampling frequency 12.500kHz, frame...
Hi,
I developed a system for signal processing in matlab.It contains lot of m-files. Now i want to create simulink block using that matlab files. and get the output value(string) in simulink enviorment. how can i do this ?
Can anyone give brief explanation about Linear Frequency Cepstral Coefficients and Mel-frequency cepstral coefficients?. Also what is the difference between them? Advantages of LFCC over MFCC?
Thankyou
Here is the code i found to Calculate the deltas of a sequence. Can anyone tell what is the purpose of doing this?
explain the code?
function d = deltas(x, w)
% D = deltas(X,W) Calculate the deltas (derivatives) of a sequence
% Use a W-point window (W odd, default 9) to calculate deltas...
It is used to extract the features in audio signal. It has steps Signal Normalization, Compute FFT power spectrum, Compute autoregressive model analysis, Convert LPC to cepstra , Apply DCT and Convert to cepstra, Apply lifter to matrix of cepstra, Calculate the deltas of a output mel sequence ...
Thankyou for your reply. I read about linear filter banks but i couldn't understand because i'm new to signal processing area. can you give further explanation?
I found this code to normalize. please explain how it works as steps.
if std(signal) < 1.0e-7
signal= signal- mean(signal); % neutralization
else
signal= signal- mean(signal); % neutralization
signal= signal/ std(signal); % normalization
Thankyou
Hi,
can anyone briefly explain why we need to do autoregressive model analysis for audio files? give some introduction to autoregressive model analysis?
In signal processing, i did feature extraction using MFCC. then use kmeans(k=6) clustering technique to generate the code-book.so i got 6 rows for each frame of data. but while testing i got 20 rows for each frame of data. because In Mel Frequency Warping, the number of mel cepstral...
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