What is quantization of analog signal?
The quantizing of an analog signal is done by discretizing the signal with a number of quantization levels. Quantization is representing the sampled values of the amplitude by a finite set of levels, which means converting a continuous-amplitude sample into a discrete-time signal.
Why quantization is required when an analog signal is transformed to digital signal?
The conversion of a waveform into a set of digital signals starts with quantization of the wave to produce a set of numbers. The greater the number of quantization levels, the more precise the digital representation, but excessive quantization is wasteful in terms of the time required.
How is the quantization of an analog signal done?
The quantizing of an analog signal is done by discretizing the signal with a number of quantization levels. Quantization is representing the sampled values of the amplitude by a finite set of levels, which means converting a continuous-amplitude sample into a discrete-time signal. The following figure shows how an analog signal gets quantized.
What are the different types of quantization in digital communication?
1 Quantizing an Analog Signal. The analog-to-digital converters perform this type of function to create a series of digital values out of the given analog signal. 2 Types of Quantization. There are two types of Quantization – Uniform Quantization and Non-uniform Quantization. 3 Quantization Error. 4 Companding in PCM.
How are analog signals converted to digital signals?
The analog-to-digital converters perform this type of function to create a series of digital values out of the given analog signal. The following figure represents an analog signal. This signal to get converted into digital, has to undergo sampling and quantizing.
What are the discrete amplitudes of a quantized signal called?
The discrete amplitudes of the quantized output are called as representation levels or reconstruction levels. The spacing between the two adjacent representation levels is called a quantum or step-size. The following figure shows the resultant quantized signal which is the digital form for the given analog signal.