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pa-fft-spectral-analysis [2026/01/30 22:04] – reid_go-ci.compa-fft-spectral-analysis [2026/02/02 17:10] (current) – reid_go-ci.com
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 {{::fft_spectrum.png?400|}} {{::fft_spectrum.png?400|}}
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 +There are several signal computation options available for post processing.  The most used options are APS: Auto-power Spectra and FRF: Frequency Response Functions
  
 {{::fft_computation.png?400|}} {{::fft_computation.png?400|}}
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 +Results of selected options:
 + 
 +Computation of time stream data results are displayed in signal window and resulting plots appear when double clicked or dragged into compatible graph.
 +
 +{{::fft_analysis_streams.gif}}
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 +**Auto-power Spectra:** APS is our in-house terminology for a standard FFT analysis.  Displays frequency spectrum corresponding amplitude after FFT and data processing. Typically results are displayed in Hz (Frequency) on the X-axis, 
 +EU Y-Axis scaled to dB, LogMag, or Lin Mag.
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 +{{::fft.gif?}}
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 +**Frequency Response Function:** Often referred to as transfer functions, FRF describe the relationship between the input and output functions.  Result is commonly displayed in Frequency v Phase & Frequency v EU similar to FFT analysis.
 +
 +{{::frf.gif?}}