I have a range of sine waves I have obtained in an experiment.(adsbygoogle = window.adsbygoogle || []).push({});

I want to put a measure on the purity of these sine waves - how well the reproduce a theoretical sine wave.

Is there anyway I can analyse the FFT of the sine waves in Matlab and put a measure on the purity of the sine wave (e.g. by measuring the FWHM of the peak at the frequency of the sine wave)?

Thank you

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# Measuring the 'purity' of a sine wave using FFT (Matlab)

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