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

    %% Locked Status of a Lowpass Filter
% Create a lowpass filter with default properties. Run |step| on the
% object.
% Verify if the object is locked or not.

% Copyright 2015 The MathWorks, Inc.


%%
LPF = dsp.LowpassFilter;
Lockstatus = isLocked(LPF)

%%
% Lock the filter object by running |step| on it. 
% Verify if the object is locked.

y = step(LPF,randn(10,2));

Lockstatus = isLocked(LPF)