matlab理想带通滤波

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理想带通使用如下函数，dim是维度，如果input是一维，则dim=1

% FILTERED = ideal_bandpassing(INPUT,DIM,WL,WH,SAMPLINGRATE)
% 
% Apply ideal band pass filter on INPUT along dimension DIM.
% 
% WL: lower cutoff frequency of ideal band pass filter
% WH: higher cutoff frequency of ideal band pass filter
% SAMPLINGRATE: sampling rate of INPUT
% 
% Copyright (c) 2011-2012 Massachusetts Institute of Technology, 
% Quanta Research Cambridge, Inc.
%
% Authors: Hao-yu Wu, Michael Rubinstein, Eugene Shih, 
% License: Please refer to the LICENCE file
% Date: June 2012
%
function filtered = ideal_bandpassing(input, dim, wl, wh, samplingRate)if (dim > size(size(input),2))error('Exceed maximum dimension');endinput_shifted = shiftdim(input,dim-1);Dimensions = size(input_shifted);n = Dimensions(1);dn = size(Dimensions,2);Freq = 1:n;Fre

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