Generate simple chirp signal

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)

Answer 1

[Star Strider]

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’.

[Mohamed Ashraf]

What shold happpen when fft happens for chirp

[Star Strider]

The fft function is inappropriate for time-varying signal such as a chirp. Use the spectrogram function instead.

Answer 2

[Image Analyst]

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.