Sine with variable frequency

I want a sine signal with variable frequency with frequency range 30- 150 Hz and amplitude should be constant. This signal is a second order run-up signal from an automobile engine.Can any one suggest me how to establish the variability in frequency term w.r.t time of the signal. sin(2*pi*f*t) both f & t are variable and dependent on each other

Answer 1

[Arturo Moncada-Torres]

I suggest you to check the function chirp

help chirp

I think this is exactly what you need.

Hope it helps ;-) !

[Riyazuddin]

thank you i will look into tht

[Arturo Moncada-Torres]

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