clc;
clear all;
close all;
fpr=44100;
Nx=4*fpr;
dt=1/fpr;
fm=1;
t=dt*(0:Nx-1);
f0=0;
df=1000;
fch1=f0+df*t;
f0=2000;
df=2000;
fch2=f0+df*sin(2*pi*fm*t);
f0=100;
df=0;
fch3=f0*exp(2*t);
fch=fch1;
HEHE NIEDIZOA
if(0)
x=sin(2*pi*cumsum(fch)*dt);
plot(t,x); pause
spectrogram (x, 512, 512-32, 1024, fpr);
soundsc(x,fpr)
end
if(1)
f0=1;
for k=0:10
x=cos(2*pi*(f0+k*fpr)*t) +k/10;
plot(t,x); hold on;
end
end
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