A 12-bit analogue to digital converter samples at a rate of 10 000 samples per second.
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A 12-bit analogue to digital converter samples at a rate of 10 000 samples per second....
Calculate the bit rate (or, more strictly, the binary digit rate) required to transmit a voice signal as a linearly quantised PCM signal with a signal-to-quantisation-noise ratio of 40 dB. (Choose a realistic value in your calculation for the sampling rate and peak-to-mean ratio of a voice signal.) Calculate the minimum channel bandwidth required for the resulting PCM signal if inter-symbol interference is to be avoided.
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3323 Modern Digital and Analog Communication Question A compact disc (CD) records audio signals digitally by using PCM. Assume that the audio signal bandwidth equals 15 kHz (a) If signal is sampled at the Nyquist rate and the samples are uniformly digitized into L 65,536 levels and then binary-coded, determine the number of bits required to encode a sample (b) If the audio signal has average power of 0.1 W and a...
(5) A PCM system encodes samples using an 8-bit ADC. In the case of peak signal amplitude, estimate the signal to quantization noise ratio in dB (6) The output SQNR of a 10-bit PCM was found to be insufficient at 30 dB. To achieve the desired SQNR of 42 dB, an increase to the number of quantization levels was needed. Determine the fractional increase in the transmission bandwidth required. (7) A signal x(t) band-limited to 3kHz is sampled at a...