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Generate simple chirp signal

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Sammy
Sammy 2015-9-30
评论： Star Strider 2018-2-24
Hello,
How can i generate the simplest form of a chirp in matlab using the chirp function? what are good values for t, f0, t1, f1? Should I plot the frequency using fft? Thanks
y = chirp(t,f0,t1,f1)

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Star Strider
Star Strider 2015-9-30
The simplest is the Linear Chirp. ‘Good’ values for the arguments are whatever best satisfy the requirements for your generating the chirp. I would use the spectrogram function rather than the fft, although the one you choose depends on the information you want from it. Both are ‘correct’.
  2 个评论
Mohamed Ashraf
Mohamed Ashraf 2018-2-24
What shold happpen when fft happens for chirp
Star Strider
Star Strider 2018-2-24
The fft function is inappropriate for time-varying signal such as a chirp. Use the spectrogram function instead.

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Image Analyst
Image Analyst 2015-9-30
I'm not sure what you're asking for. Why would one set of parameters be any simpler than another? Just experiment around with parameters until you get a set you like. If you want to plot the frequency with fft() or pwelch(), go ahead.

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