www.gusucode.com > dsp 案例源码程序 matlab代码 > dsp/SignalDelayUsingAVariableFractionalDelayExample.m
%% Signal Delay using a Variable Fractional Delay %% % *Note*: This example runs only in R2016b or later. If you are using an % earlier release, replace each call to the function with the equivalent % |step| syntax. For example, myObject(x) becomes step(myObject,x). %% % Delay a signal by a varying fractional number of sample periods. hsr = dsp.SignalSource; hvfd = dsp.VariableFractionalDelay; hLog = dsp.SignalSink; for ii = 1:10 delayedsig = hvfd(hsr(), ii/10); hLog(delayedsig); end sigd = hLog.Buffer; %% % The output |sigd| corresponds to the values of the delayed signal % that are sampled at fixed-time intervals. For visualization % purposes, we can instead plot the time instants at which the % amplitudes of signal samples are constant by treating the % signals as the sampling instants. stem(hsr.Signal, 1:10, 'b') hold on; stem(sigd.', 1:10, 'r'); legend('Original signal',... 'Variable fractional delayed signal', ... 'Location','best')