Basic Operations Product(modulation) operation Modulator yn]=xn] wIn An application is in forming a finite -length sequence from an infinite-length sequence by multiplying the latter with a finite -length sequence called a window sequence Process called windowing Copyright C 2001, S.K. Mitra21 Copyright © 2001, S. K. Mitra Basic Operations • Product (modulation) operation: – Modulator • An application is in forming a finite-length sequence from an infinite-length sequence by multiplying the latter with a finite-length sequence called a window sequence • Process called windowing x[n]  y[n] w[n] y[n] = x[n]w[n]