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# A compact disc (CD) records audio signal digitally by using PCM. Assume that the audio signal bandwidth equals 15KHz. (a) If the Nyquist samples are uniformly into levels and then binary-coded, determine the number of binary digitals required into levels and then binary-coded, determine the number of binary digits required to encode a sample. (b) if the audio signal has a peak voltage of +- IV and an average signal power of 0.1. Find the resulting ratio od signal to quantization noise (SQNR)for the system. (c) Determine the number of binary digits per second (bit/s) required to encode the audio signal. (d) For practical reasons discussed in the text, signals are sampled at a rate well above the Nyquist rate. Practical CDs use 44.100 samples per second. Id L = 65.536, determine the number of bits per second required to encode the signal and the minimum bandwidth required to transmit the encoded signal.

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