% -*- texinfo -*- % @deftypefn {Function File} {[@var{y}, @var{c}] =} stft (@var{x}, @var{win_size}, @var{inc}, @var{num_coef}, @var{w_type}) % Compute the short-time Fourier transform of the vector @var{x} with % @var{num_coef} coefficients by applying a window of @var{win_size} data % points and an increment of @var{inc} points. % % Before computing the Fourier transform, one of the following windows % is applied: % % @table @asis % @item hanning % w_type = 1 % @item hamming % w_type = 2 % @item rectangle % w_type = 3 % @end table % % The window names can be passed as strings or by the @var{w_type} number. % % If not all arguments are specified, the following defaults are used: % @var{win_size} = 80, @var{inc} = 24, @var{num_coef} = 64, and % @var{w_type} = 1. % % @code{@var{y} = stft (@var{x}, @dots{})} returns the absolute values % of the Fourier coefficients according to the @var{num_coef} positive % frequencies. % % @code{[@var{y}, @var{c}] = stft (@code{x}, @dots{})} returns the % entire STFT-matrix @var{y} and a 3-element vector @var{c} containing % the window size, increment, and window type, which is needed by the % synthesis function. % @end deftypefn

- hamming % Return the filter coefficients of a Hamming window of length @var{m}.
- hanning % Return the filter coefficients of a Hanning window of length @var{m}.

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