Can someone pls help me with this code. (mfcc)
6 ビュー (過去 30 日間)
古いコメントを表示
whenever I am trying to run the code it is throwing an error i.e. =>
"Undefined function or variable 'melfilter'.
Error in mfcc (line 29)
filterBankMat = melfilter(N, Fs,@hamming); % matrix for a mel-spaced filterbank
Error in phase1 (line 17)
M = mfcc(y, Fs);"
% ============================================================
CODE:
function c = mfcc(y, Fs)
% MFCC Calculate the mel frequencey cepstrum coefficients (MFCC) of a signal
%
% Inputs:
% y : speech signal data
% Fs : sample rate in Hz of the speech signal data y
%
% Outputs:
% c : MFCC output, each column contains the MFCC's for one speech frame
N = 256; % frame size
M = 100; % inter frame distance
len = length(y);
numberOfFrames = 1 + floor((len - N)/double(M));
mat = zeros(N, numberOfFrames); % vector of frame vectors
for i=1:numberOfFrames
index = 100*(i-1) + 1;
for j=1:N
mat(j,i) = y(index);
index = index + 1;
end
end
hamW = hamming(N); % hamming window
afterWinMat = diag(hamW)*mat; % square diagonal matrix
freqDomMat = fft(afterWinMat); % FFT into freq domain
filterBankMat = melfilter(20,N, Fs); % matrix for a mel-spaced filterbank [HERE IT IS THROWING ERROR].
nby2 = 1 + floor(N/2);
ms = filterBankMat*abs(freqDomMat(1:nby2,:)).^2; % mel spectrum
c = dct(log(ms)); % mel-frequency cepstrum coefficients
c(1,:) = []; % exclude 0'th order cepstral coefficient
end
1 件のコメント
採用された回答
その他の回答 (1 件)
Jacob Shulman
2018 年 11 月 23 日
if melfilter is a matrix you want to use then it must be an input to the function or be created and defined wihtin the function. functions create different new workspaces with new variables.
0 件のコメント
参考
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!