www.gusucode.com > dsp 案例源码程序 matlab代码 > dsp/FilterInputIntoLowpassAndHighpassSubbandsExample.m
%% Filter Input into Lowpass and Highpass Subbands % Create a halfband decimator for data sampled at 44.1 kHz. Use a % minimum-order design with a transition width of 2 kHz and a stopband % attenuation of 60 dB. % Copyright 2015 The MathWorks, Inc. hfirhalfbanddecim = dsp.FIRHalfbandDecimator(... 'Specification','Transition width and stopband attenuation',... 'TransitionWidth',2000,'StopbandAttenuation',60,'SampleRate',44.1e3); %% % Filter a two-channel input into low and highpass subbands x = randn(1024,2); [ylow,yhigh] = step(hfirhalfbanddecim,x);