fmlin

Purpose

Signal with linear frequency modulation.

Synopsis

[y,iflaw] = fmlin(N)
[y,iflaw] = fmlin(N,fnormi)
[y,iflaw] = fmlin(N,fnormi,fnormf)
[y,iflaw] = fmlin(N,fnormi,fnormf,t0)

Description

fmlin generates a linear frequency modulation, going from fnormi to fnormf. The phase of this modulation is such that y(t0)=1.

Name	Description	Default value
N	number of points
fnormi	initial normalized frequency	0.0
fnormf	final normalized frequency	0.5
t0	time reference for the phase	N/2
y	signal
iflaw	instantaneous frequency law

Example

         z=amgauss(128,50,40).*fmlin(128,0.05,0.3,50); 
         plot(real(z));

See Also

fmconst, fmsin, fmodany, fmhyp, fmpar, fmpower.

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