Question

There is a system that can multiply and / or add several input signals (constants or variables) in the time domain; the input signals are f1 (t), f2 (t) and f3; the output signals are f4 (t), f5 (t) and f6 (t). The substime lowpass filter (FPBj) is a system that has a transfer function h (t) (H (w)), with unit gain in the operating area and cutoff frequency of + - 400 Hz. (The filter gain passes abruptly from 1 to 0 in the + - 400Hz)

Let f1 (t) = 2cos (900pit) f2 (t) = 2cos (50000pit); get

a) the Fourier exponential series of the signal f4 (t)

b) the fourier transform (mathematical equation) and the spectral plot of the signal f4(t)

c) The Fourier exponential series of the signal signal f5(t)

d) the fourier transform (mathematical equation) and the spectral plot of the signal f5(t)

f) the Fourier exponential series of the signal f6 (t)

b) the fourier transform (mathematical equation) and the spectral plot of the signal f6(t)

función de ha de corte de + 400 Hz (la ganancl f 2 htti 1.(t) f (0 f,it) Sea: 6(0 - 2cos (90011o y f(0 2cos( 50000110: obtenga rnencial de Fourier (SEF) de la señal falt) itral Y la gráfica espectria de la señal fa( 15

Answer 1

niven, Black darom 3 lt) a) b) n--1

d) 906M0 900万 ナ2 쿡 ne-) nキ。 nto

Spec GIDOTT 5090077