A digital system multiplexes 32 voice channels based on 16-bit PCM. Each voice signal is put through a low- pass filter with a cutoff frequency of 2.3 KHz. The filtered voice signal is sampled at 9.1 KHz. In addition, two bits are added at the end of the frame for synchronization and control purposes. The output transmission rate for this system equals to: O a. 4.677 Gbps O b. 4.677 Mbps O c. 4.677 Kbps O d. 4.677 bps
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.
Probability of Error
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