Example-8: Consider a Speech Signal with maximum frequency of 3.4KHZ and maximum amplitude of lvolt. This speech signal is applied to a delta modulator whose bit rate is set at 20kbit/sec. Explain the choice of an appropriate step size for the modulator.
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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