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

    %% Locked Status of a Sample Rate 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. Verify that it is not locked.

% Copyright 2015 The MathWorks, Inc.


%%
src = dsp.SampleRateConverter;
no = isLocked(src)

%%
% Lock the converter by running |step| on random data. Verify that it is
% locked.

[L,M] = getRateChangeFactors(src);
y = step(src,randn(M,2));

yes = isLocked(src)