The input/output equation for an analog averager is given by the convolution integral 1 y(1) : 2p(1)x -T where x(t) is the input and y(t) the output. (a) Change the above equation to determine the impulse response h(t). (b) Graphically determine the output y(t) corresponding to a pulse input x(t) = u (t) – u(t – 2) using the convolution integral (let T = 1) relating the input and the output. Care- fully plot the input and the output. (The output can also be obtained intuitively from a good understanding of the averager.) (c) Using the impulse response h(t) found above, use now the Laplace transform to find the output corresponding to x (t) =u(t) – u(t – 2), let again T = 1 in the averager. -

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19 The input/output equation for an analog averager is given by the convolution integral
y(t)
-T
ip(1)x
where x (t) is the input and y(t) the output.
(a) Change the above equation to determine the impulse response h(t).
(b) Graphically determine the output y(t) corresponding to a pulse input x(t)=u(t) –
u (t – 2) using the convolution integral (let T = 1) relating the input and the output. Care-
fully plot the input and the output. (The output can also be obtained intuitively from a good
understanding of the averager.)
(c) Using the impulse response h(t) found above, use now the Laplace transform to find the
output corresponding to x (t) =u(t) – u(t – 2), let again T = 1 in the averager.
Answers: h(t)= (1/T)[u(t) – u(t – T)]; y(t) =r(t) – r (t – 1) – r (t – 2)+r(t – 3).
Transcribed Image Text:19 The input/output equation for an analog averager is given by the convolution integral y(t) -T ip(1)x where x (t) is the input and y(t) the output. (a) Change the above equation to determine the impulse response h(t). (b) Graphically determine the output y(t) corresponding to a pulse input x(t)=u(t) – u (t – 2) using the convolution integral (let T = 1) relating the input and the output. Care- fully plot the input and the output. (The output can also be obtained intuitively from a good understanding of the averager.) (c) Using the impulse response h(t) found above, use now the Laplace transform to find the output corresponding to x (t) =u(t) – u(t – 2), let again T = 1 in the averager. Answers: h(t)= (1/T)[u(t) – u(t – T)]; y(t) =r(t) – r (t – 1) – r (t – 2)+r(t – 3).
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