In a concert hall, the original audio signal echo the walls and ceilings due to the reflection of such production, the audience felt the audio signal is and its echo synthesis. So that y (n) = x (n)+ ax (nk), where x (n) = cos (0.3pin)+0.5 cis (0.6pin), a = 0.1, k = 50. Generate 100 samples, using Matlab tools, find the self-related, from observation to determine a and k.

Chp1test1.m

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