16. Assume that the bandwidth of a pulse with width t is approximately 1/t. Suppose we have an AD converter with maximum sampling rate 20 kHz. Assume that a 64-level quantizer is employed. What is the maximum bandwidth needed for the signal after conversion? (a) 60 kHz (b) 120 kHz (c) 64 kHz (d) 240 kHz ologua cignel with bonduwidth 101U, ie tre formod into digitel signoL veing D CM

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16. Assume that the bandwidth of a pulse with width t is approximately 1/t. Suppose we have
an AD converter with maximum sampling rate 20 kHz. Assume that a 64-level quantizer is
employed. What is the maximum bandwidth needed for the signal after conversion?
(a) 60 kHz
(b) 120 kHz
(c) 64 kHz
(d) 240 kHz
17. An analogue signal with bandwidth 10kHz is transformed into digital signal using PCM.
Assume that it is critically sampled and the number of quantization levels is 32. How many bits
are used to represent one sample?
(a) 32
(b) 16
(c) 5
(d) 6
18. An analogue signal with bandwidth 10 kHz is transformed into digital signal using PCM.
Assume that it is critically sampled and the number of quantization levels is 32. What is the bit
rate?
(a) 50 kb/s
(b) 100kb/s
(c) 25 kb/s
(d) 200 kb/s
19. An analogue signal with bandwidth 10 kHz is transformed into digital signal using PCM.
Assume that it is critically sampled and the number of quantization levels is 32. If the analogue
signal is uniformly distributed in [-2V, +2V], what is the minimum quantized value?
(a) 1/16
(b) 1/32
(c) 1/64
(d) 1/8
20. An analogue signal with bandwidth 10 kHz is transformed into digital signal using PCM.
Assume that it is critically sampled and the number of quantization levels is 32. If the analogue
signal is uniformly distributed in [0V, +2V], what is the minimum quantized value?
(a) 1/16
(b) 1/32
(c) 1/64
(d)
1/ 8
Transcribed Image Text:16. Assume that the bandwidth of a pulse with width t is approximately 1/t. Suppose we have an AD converter with maximum sampling rate 20 kHz. Assume that a 64-level quantizer is employed. What is the maximum bandwidth needed for the signal after conversion? (a) 60 kHz (b) 120 kHz (c) 64 kHz (d) 240 kHz 17. An analogue signal with bandwidth 10kHz is transformed into digital signal using PCM. Assume that it is critically sampled and the number of quantization levels is 32. How many bits are used to represent one sample? (a) 32 (b) 16 (c) 5 (d) 6 18. An analogue signal with bandwidth 10 kHz is transformed into digital signal using PCM. Assume that it is critically sampled and the number of quantization levels is 32. What is the bit rate? (a) 50 kb/s (b) 100kb/s (c) 25 kb/s (d) 200 kb/s 19. An analogue signal with bandwidth 10 kHz is transformed into digital signal using PCM. Assume that it is critically sampled and the number of quantization levels is 32. If the analogue signal is uniformly distributed in [-2V, +2V], what is the minimum quantized value? (a) 1/16 (b) 1/32 (c) 1/64 (d) 1/8 20. An analogue signal with bandwidth 10 kHz is transformed into digital signal using PCM. Assume that it is critically sampled and the number of quantization levels is 32. If the analogue signal is uniformly distributed in [0V, +2V], what is the minimum quantized value? (a) 1/16 (b) 1/32 (c) 1/64 (d) 1/ 8
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