The bit rate for a signal, which has a sampling rate of 8kHz and where 16 quantisation levels have been used is :
A
32000bits/sec
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B
16000bits/sec
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C
64000bits/sec
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D
72000bits/sec
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Solution
The correct option is D32000bits/sec If n is the number of bits per sample, then number of quantisation level =2 , Since the number of quantisation level is 16 - ⇒2n=16⇒n=4 ∴ Bit rate = Sampling rate × No. of bits per sample =8000×4=32,000bits/sec .