www.gusucode.com > dsp 案例源码程序 matlab代码 > dsp/PlotUnwrappedPhaseOfASineWaveExample.m
%% Plot Unwrapped Phase Of a Sine Wave %% % *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). %% % Create a |dsp.SineWave| System object(TM). Specify that the object % generates an exponential output with a complex exponent. hsin = dsp.SineWave('Frequency',10,... 'ComplexOutput',true,'SamplesPerFrame',128); %% % Create a |dsp.PhaseExtractor| System object(TM). Specify that the object % ignores frame boundaries when returning the unwrapped phase. hphase = dsp.PhaseExtractor('TreatFramesIndependently',false); %% % Extract the unwrapped phase of a sine wave. Plot the phase versus time % using a |dsp.TimeScope| System object(TM). hplot = dsp.TimeScope('PlotType','Line','SampleRate',1000,... 'TimeSpan',1.5,'YLimits',[0 80],... 'ShowGrid',true,... 'YLabel','Unwrapped Phase (rad)'); for ii = 1:10 sineOutput = hsin(); phaseOutput = hphase(sineOutput); hplot(phaseOutput) end