(c) Determine the number of binary digits per second (bit/s) required to encode the audio signal.
(c) Determine the number of binary digits per second (bit/s) required to encode the audio signal.
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I only need part (C)
Transcribed Image Text:A compact disc (CD) records audio signals digitally by using PCM. Assume that the audio signal
bandwidth equals 15 kHz.
(a) Ifthe Nyquist samples are uniformly quantized into L = 65,536levels and then binary-coded,
determine the number of binary digits required to encode a sample.
(b) If the audio signal has average power of 0.1 watt and peak voltage of 1 volt. Find the resulting
signal-to-quantization-noise ratio (SQNR) of the uniform quantizer output in part (a).
(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 abovethe Nyquist
rate. Practical CDs use 44,100 samples per second. If 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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