MATLAB: How to create the DSP object

dsp

I have the DSP System Toolbox, but do not know how to create the dsp object used in the examples.

How do I create the dsp object, in order to use functions like dsp.audioFileWriter?

Thanks

Best Answer

OK, I see that there is no dsp object, but dsp.AudioFileWriter works.

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MATLAB: How to use spectrum analyzer object to show a signal waveform

You can set FrequencyResolutionMethod to 'Window length' to manually adjust the length of signal used to compute the spectrum, e.g.,

Fs = 2500; 
Sineobject1 = dsp.SineWave('SamplesPerFrame',1024,'SampleRate',Fs,'Frequency',100); 
Sineobject2 = dsp.SineWave('SamplesPerFrame',1024,'SampleRate',Fs,'Frequency',1000); 
SA = dsp.SpectrumAnalyzer('SampleRate',Fs,'NumInputPorts',2,'PlotAsTwoSidedSpectrum',... 
    false,'ChannelNames',{'SinewaveInput','NotchOutput'},'ShowLegend',true,...
    'FrequencyResolutionMethod','WindowLength');
step(SA,step(Sineobject1),step(Sineobject2))

MATLAB: Dsp

xcorr() with the 'coeff' option.

x = randn(1000,1);
y = randn(1000,1);
[C,lags] = xcorr(x,y,20,'coeff');

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MATLAB: How to use spectrum analyzer object to show a signal waveform

MATLAB: Dsp

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