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Weighted superposition of time-shifted impulse responses is termed as _______ for discrete-time signals.

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Weighted superposition of time-shifted impulse responses is termed as _______ for discrete-time signals.

(a) Convolution integral

(b) Convolution multiple

(c) Convolution sum

(d) Convolution

I got this question in homework.

The query is from Convolution : Impulse Response Representation for LTI Systems topic in portion Time Domain Representation for LTI Systems of Signals and Systems

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The correct choice is (c) Convolution sum

The explanation is: Weighted superposition of time-shifted impulse responses is called convolution sum for discrete-time signals and convolution integral for continuous-time signals.

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