ti
Te
Tefe=1
Te
f0= 200Hz f0
0= 800Hz
f00
0= 1200Hz
fe= 1000Hz
2e3e
Tefe
−→
Ttot N
N Ttot Te
−→
fe
u(t)
u(t)f0= 100Hz
fe= 10kHz
0fe
1020 Te= 100µs fe= 10kHz 102ms
u(t) 3 4kHz
f f0fe
u(t)
0f0
u(t)u(t)
f0= 7kHz u(t)
f0fe[0, f0]
s(t)u(t)
h(t)feα= 50%
h(t)
s(t) = u(t)×h(t)
s(t)
u(t)
f0= 1kHz
h(t)
fe= 10kHz
u(t)h(t)
s(t)
1
/
2
100%