and digitized before transmission. It is found that limiting the bandwidth of human voice to 3000 Hz would be enough to ensure good-quality phone calls. a. Human voice contains frequency components above 3000 Hz. How can we ensure that the voice signal will only occupy a bandwidth of 3000 Hz? b. The sampling rate is determined to be 50% higher than the Nyquist sampling rate. Determine the sampling rate. c. A pulse-code modulation (PCM) scheme is used to represent the digitized voice signal, where 10 bits are used for each sample. Determine the data rate of a single voice call.
and digitized before transmission. It is found that limiting the bandwidth of human voice to 3000 Hz would be enough to ensure good-quality phone calls. a. Human voice contains frequency components above 3000 Hz. How can we ensure that the voice signal will only occupy a bandwidth of 3000 Hz? b. The sampling rate is determined to be 50% higher than the Nyquist sampling rate. Determine the sampling rate. c. A pulse-code modulation (PCM) scheme is used to represent the digitized voice signal, where 10 bits are used for each sample. Determine the data rate of a single voice call.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
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Quantization and Resolution
Quantization is a methodology of carrying out signal modulation by the process of mapping input values from an infinitely long set of continuous values to a smaller set of finite values. Quantization forms the basic algorithm for lossy compression algorithms and represents a given analog signal into digital signals. In other words, these algorithms form the base of an analog-to-digital converter. Devices that process the algorithm of quantization are known as a quantizer. These devices aid in rounding off (approximation) the errors of an input function called the quantized value.
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Transcribed Image Text:In a digital telephony network, the signal of human voice needs to be sampled
and digitized before transmission. It is found that limiting the bandwidth of
human voice to 3000 Hz would be enough to ensure good-quality phone calls.
a. Human voice contains frequency components above 3000 Hz. How can
we ensure that the voice signal will only occupy a bandwidth of 3000
Hz?
b. The sampling rate is determined to be 50% higher than the Nyquist
sampling rate. Determine the sampling rate.
c.
A pulse-code modulation (PCM) scheme is used to represent the
digitized voice signal, where 10 bits are used for each sample.
Determine the data rate of a single voice call.
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