Consider a delta modulation (DM) system used to transmit a voice signal, which is uniformly sampled at the rate of 64 kHz. Assume the following specifications: Voice signal bandwidth 3.1 kHz Maximum signal amplitude = 10 volts (a) To avoid slope overload distortion, what is the minimum permissible value of the step size A used in the system? (b) Determine the minimum-channel bandwidth needed to transmit the DM encoded
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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