A speech signal, band limited to 4kHz and peak voltage varying between – McqOptions

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1.	A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. The number of quantization levels required to reduce the quantization noise by a factor of 4 would be
A.	1024
B.	512
C.	256
D.	64
Answer» C. 256

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