Discussion :: Exam Questions Paper
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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
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Answer : Option B
Explanation :
To reduce quantization noise by 4
No. of levels should increase by 2
Thus 512 levels are required.
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