Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 9 (Q.No. 20)
20.
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. If the bits 0 and 1 are transmitted using bipolar pulses, the minimum bandwidth required for distortion free transmission is
Answer: Option
Explanation:
According to Nyquist Criteria, minimum sampling frequency = 2 x 4 k = 8 kHz
But each cycle can accommodate two bits
Thus minimum frequency = 4 kHz.
Discussion:
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