Question 31 : Which codec is used in the UK?
1. a-law
2. µ-law
3. linear codec
4. PCM
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Question 32 : Which codec is used in digital audio?
1. A-law
2. µ-law
3. linear
4. PCM
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Question 33 : Which theorem describes the sampling rate with the frequency of the analogue signal?
1. Nyquist theorem
2. Bayes theorem
3. Sampling theorem
4. Parseval's theorem
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Question 34 : Which signal is sampled at regular intervals for the purpose of ADC?
1. analog signal
2. digital signal
3. quantised signal
4. sampled signal
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Question 35 : Which of the following is a current limiting device?
1. voltage
2. current
3. buffer
4. inductor
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Question 36 : Which of the following can determine the maximum frequency that can be converted?
1. sample frequency
2. sample rate
3. sample size
4. sample nature
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Question 37 : Which of the following possesses some loops for providing timing functions?
1. hardware
2. software
3. timer
4. counter
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Question 38 : What does DPCM stand for?
1. differential pulse code modulation
2. data pulse code modulation
3. dynamic pulse code machine
4. dynamic pulse code modulation
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Question 39 : Which term determines the random timing error?
1. jitter
2. quantisation error
3. sample error
4. delay
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Question 40 : What does PCM stand for?
1. pulse codec machine
2. pulse code modulation
3. peripheral code machine
4. peculiar code modulation
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