www.gusucode.com > sigdemos 工具箱matlab源码程序 > sigdemos/tffunc.m
function [t,f,w,F] = tffunc(amp,freq) %TFFUNC time and frequency domain versions of a cosine modulated Gaussian pulse. % For use in Signal demo 2. % Author: L. Shure % Copyright 1984-2004 The MathWorks, Inc. sigma = 1; t = -1:.01:1; f = amp*cos(2*pi*freq*t).*exp(-pi*(sigma*t).^2); w = -8:.1:8; F = 2*sigma*amp*(exp(-pi*((w-freq)/sigma).^2)+exp(-pi*((w+freq)/sigma).^2));