getSpectrumData

Save spectrum data shown in spectrum analyzer

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Syntax

spectrumTable = getSpectrumData(scope)

Description

spectrumTable = getSpectrumData(scope) returns the spectrum and spectrogram displayed on the spectrum analyzer along with additional statistics about the spectrum.

Examples

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Open Script

Save the spectrum estimation displayed on a spectrum analyzer.

Create a Spectrum Analyzer System object, scope, and generate data.

scope = dsp.SpectrumAnalyzer;
scope(randn(5000,3))

Save data from the last spectrum shown on the spectrum analyzer to a table.

specTable = getSpectrumData(scope)

specTable =

  1x3 table

    SimulationTime       Spectrum        FrequencyVector
    ______________    _______________    _______________

        {[0]}         {1536x3 double}    {1536x1 double}

Input Arguments

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Spectrum analyzer you want to query. Specify a dsp.SpectrumAnalyzer System object™ or a Spectrum Analyzer Configuration object for a spectrum analyzer block.

Output Arguments

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A spectrum table is returned containing the following fields:

FieldDescription
SimulationTimeSimulation time
SpectrumPower, power density, or RMS spectrum data
SpectrogramSpectrogram data
MinHoldTraceMinimum hold trace data
MaxHoldTraceMaximum hold trace data
FrequencyVectorFrequency vector

See Also

Functions

Objects

Objects

Blocks

Introduced in R2017b

DSP System Toolbox Documentation
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