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Q:

What is a convolution sum?

A) ?x[k]h[n-k], k from -? to +? B) ?x[k]*?h[n-k], k from -? to +?
C) ?x[k]+?h[n-k], k from -? to +? D) ??x[k]h[n-k], k from -? to +?
 
Answer & Explanation Answer: A) ?x[k]h[n-k], k from -? to +?

Explanation: y[n]=?x[k]h[n-k], k from -? to +?, y[n] is the output of the summation of the components on the right hand side. Where x[n] is the input of an LTI system and h[n] is the impulse response of the ?[n] input of an LTI system. The response is due to superposition, in short.

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Category: Electronics & Electrical MCQs
Sub Category: Signals & Systems Mcqs

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