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The multiplication of two signal in time domain signifies _______(a) Convolution in time domain(b) Convolution in frequency (jw)domain(c) Multiplication in frequency (jw) domain(d) NothingI got this question in an interview.My question is taken from Fourier Analysis and Filtering topic in division Beyond the Basics of MATLAB

Answer»

The CORRECT option is (c) MULTIPLICATION in FREQUENCY (jw) domain

To elaborate: The fourier transform can be used to FIND the multiplication of two signals in time domain. The convolution of two signals in frequency domain is same as the multiplication of two signals in time domain.



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