An audio signal s(t) generated by a loudspeaker is reflected at two different walls with reflection coefficients
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An audio signal s(t) generated by a loudspeaker is reflected at two different walls with reflection coefficients r1 and r2. The signal x(t) recorded by a microphone close to the loudspeaker, after sampling, is
x(n) = s(n) + r1s(n – k1) + r2s(n – k2)
where k1 and k2 are the delays of the two echoes.
(a) Determine the auto correlation rxx (l) of the signal x(n.)
(b) Can we obtain r1, r2, k1 and k2 by observing rxx(l)?
(c) What happens if r2 = 0?
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a b c If 2 0 the peaks occur at l 0 and ...View the full answer
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Related Book For
Digital Signal Processing
ISBN: ?978-0133737622
3rd Edition
Authors: Jonh G. Proakis, Dimitris G.Manolakis
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