How to resolve the Error using ==> mtimes Inner matrix dimensions must agree?

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% Magnitude spectrum computation (as column vectors)
MAG = abs( fft(frames,nfft,1) );
% Triangular filterbank with uniformly spaced filters on mel scale
H = trifbank( M, K, R, fs, hz2mel, mel2hz ); % size of H is M x K
% Filterbank application to unique part of the magnitude spectrum
FBE = H*MAG(1:K,:); % FBE( FBE<1.0 ) = 1.0; % apply mel floor
Error using ==> mtimes
Inner matrix dimensions must agree.
Error in ==> new at 41
FBE = H*MAG(1:K,:); % FBE( FBE<1.0 ) = 1.0; % apply mel floor
  3 Commenti
Walter Roberson
Walter Roberson il 31 Mar 2013
The code H*MAG(1:K,:) is assuming that the second dimension of H should be length K, but clearly it is not.
trifbank is not a built-in MATLAB routine. Did you download one of the implementations from the File Exchange? If so then you are going to have to debug why it is not returning matrices of width K.

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