#305: Measuring Total Harmonic Distortion THD using an FFT on an oscilloscope

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28 Feb 2021

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This video shows how to use the FFT function on an oscilloscope to measure the relative amplitude of the harmonic distortion components of a signal, and then take those results and compute the THD, or Total Harmonic Distortion. Actual measurements are shown, and results are validated by a THD calculator in the scope as well as a THD measuring multimeter. Videos mentioned in this video are: Audio Compressor project: Demo of above: Basics of using FFT: Basics of dB: Notes from this video:

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