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Graphing a Frequency Spectrum with Matlab

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Uploaded by on Nov 16, 2010

How to use Matlab to compute and graph the frequency spectrum of a sampled time signal. More instructional engineering videos can be found at http://www.engineeringvideos.org.

This video is licensed under the Creative Commons BY-SA license http://creativecommons.org/licenses/by-sa/3.0/us/.

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  • thanks man. very helpful

  • Very helpful thanks!

    I've tried 2 other ways of plotting and the results from yours agree 100% with one of them. The other is faulty I suppose, although it is the fft example from the matlab page (mathworks /help/techdoc/ref/fft.html). They don't explain their way. Have you ever tried it?

  • Hey great video I was just wondering what would be the units of the y-axis? Would it be easy to convert to a sound pressure level in dB?

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