www.gusucode.com > dsp 案例源码程序 matlab代码 > dsp/FrequencyResponseOfDefaultConverterExample.m

    %% Frequency Response of Default Converter
% Create a multistage sample rate converter with default properties,
% corresponding to the combined three filter stages used to convert from
% 192 kHz to 44.1 kHz. Compute and display the frequency response.

% Copyright 2015 The MathWorks, Inc.


src = dsp.SampleRateConverter;
[H,f] = freqz(src);
plot(f,20*log10(abs(H)))
%% 
% Compute and display the frequency response over the range between 20 Hz 
% and 44.1 kHz.

f = 20:10:44.1e3;
[H,f] = freqz(src,f);
plot(f,20*log10(abs(H)))