% melfilter Create a mel frequency filterbank
%
% [Filter,MelFrequencyVector] = melfilter(N,FrequencyVector,hWindow)
%
% Generates a filter bank matrix with N lineary spaced filter banks,
% in the Mel frequency domain, that are overlapped by 50%.
%
% `N` the number of filter banks to construct.
%
% `FrequencyVector` a vector indicating the frequencies at which to
% evaluate the filter bank coeffiecents.
%
% `hWindow` a handle to the windowing function that determines the shape
% of the filterbank. The default is hWindow = @triang
%
% `Filter` is sparse matrix of size [N numel(FrequencyVector)].
%
% `MelFrequencyVector` is a vector containing the Mel frequency values
%
% Example
% N = 50;
% Fs = 10000;
% x = sin(2*pi*110*(0:(1/Fs):5));
% [Pxx,F] = periodogram(x,[],512,Fs);
%
% Filter = melfilter(N,F);
% Filter = melfilter(N,F,@rectwin);
% [Filter,MF] = melfilter(N,F,@blackmanharris);
% FPxx = Filter*Pxx;
% plot(1:N,FPxx)
%
% See also
% melfilter melbankm mfcceps hz2mel
%