WorksheetsELL7027 in-class quiz-4
Total questions: 5
Worksheet time: 8mins
What is the minimum number of quantization bits required for the maximum quantization error to be within 0.5% of the maximum acceptable peak-to-peak signal amplitude for a uniform quantizer?
(a)
The output SNR of a 3-bit uniform quantizer for a full-scale sinusoidal signal (i.e. having maximum acceptable amplitude) is
32
48
64
96
The improvement in SNR (in dB) obtained after quadrupling the number of quantization levels for an ADC is
6
12
18
24
Consider a PCM channel with maximum bit rate of 36 kbps. What is the maximum number of quantization levels possible for ADC of a 3.2 kHz band-limited audio signal to be sent over this channel?
16
32
64
128
A digital transmitter sends 125 different voice channels using TDM after ADC. Each analog voice signal is band-limited to 4 kHz and sampled at 125% of the Nyquist rate with 256 levels of quantization. What is the data rate (in Mbps) of the transmitter?
(a)
