amgauss

Purpose

Gaussian amplitude modulation.

Synopsis

y = amgauss(N)
y = amgauss(N,t0)
y = amgauss(N,t0,T)

Description

amgauss generates a gaussian amplitude modulation centered on a time t0, and with a spread proportional to T. This modulation is scaled such that y(t0)=1 and y(t0+T/2) and y(t0-T/2) are approximately equal to 0.5 :

$$y(t)=e^{-\pi\left({t-t_0\over T}\right)^2}$$

Name	Description	Default value
N	number of points
t0	time center	N/2
T	time spreading	2*sqrt(N)
y	signal

Examples

         z=amgauss(160);        plot(z);
         z=amgauss(160,90,40);  plot(z);
         z=amgauss(160,180,50); plot(z);

See Also

amexpo1s, amexpo2s, amrect, amtriang.

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