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4.34  Chapter Four

                         It is known that
                                         x I (t) = cos(200πt)  x Q (t) = cos(400πt)       (4.68)

                       The values of θ and f c are unknown. The signal has been recorded with a sample
                       frequency of 22050 Hz (assume Nyquist criterion was satisfied) and is available
                       in the file CompenvPrjt2.mat on the class web page. Using this file make an
                       estimate of θ and f c . Detail the logic that led to the estimates.
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