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how to plot fft of signal with time axis ?

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Abin Krishnan
Abin Krishnan 2016-5-1
回答： Star Strider 2016-5-1
I have a pressure signal of length 5 seconds. I want to plot an FFT of the signal with one axis showing the amplitude, the second axis showing the frequency and third axis showing time.

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Star Strider
Star Strider 2016-5-1
If you have the Signal Processing Toolbox, use the spectrogram function.

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