You are to design, develop and implement, using MATLAB, a “Graphical Signal Anal

Question

You are to design, develop and implement, using MATLAB, a “Graphical Signal Analyzer” – GSA for short. The design of the user interface and its advanced features is open ended and entirely up to you. The basic guidelines for the design, and the minimum requirements are as follows:

The user should be able to enter an algebraic equation and the horizontal and vertical ranges.

Optional advanced features: Non-MATLAB notations, piecewise graphs, multiple graphs

The GSA must display the graphical representation of the entered signal.

optional advanced features: Animation

There should be buttons, sliders, edit and radio boxes that help the user to perform:

Zooming in and out

Moving the graph in different directions

Adding and removing grids

Optional advanced features:

There should be UI control modules to perform mathematical operations:

Finding and plotting the derivative

Finding and plotting the integral (running a definite integral for the entire range)

Advanced features: Finding and plotting the zero crossings

Explanation / Answer

sine = dsp.SineWave('Freq',[38 400],'SampleRate',2000);
sine.SamplesPerFrame = 3024;   
scope = dsp.SpectrumAnalyzer('SampleRate',sine.SampleRate, ...
'PlotAsTwoSidedSpectrum',false,'ShowLegend',true);
for k=1:100   
scope(sine() + 3.05*randn(3024,2));
end

scope.SpectralMask.EnabledMasks = 'Upper and lower';
upperMask = [0 -10; 90 -10; 90 40; 110 40; 110 -10; 500 -10];
set(scope.SpectralMask,'UpperMask',upperMask,'LowerMask',-60);

res = getSpectralMaskStatus(scope)
release(scope);

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