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neeraj agarwal Grade: 12
        

what is principle of quantisa?tion

4 years ago

Answers : (2)

Aman Bansal
592 Points
										

Dear Neeraj,


Quantization, in mathematics and digital signal processing, is the process of mapping a large set of input values to a smaller set – such as rounding values to some unit of precision. A device or algorithmic function that performs quantization is called a quantizer. The error introduced by quantization is referred to as quantization error or round-off error. Quantization is involved to some degree in nearly all digital signal processing, as the process of representing a signal in digital form ordinarily involves rounding. Quantization also forms the core of essentially all lossy compression algorithms.


Because quantization is a many-to-few mapping, it is an inherently non-linear and irreversible process (i.e., because the same output value is shared by multiple input values, it is impossible in general to recover the exact input value when given only the output value).


The set of possible input values may be infinitely large, and may possibly be continuous and therefore uncountable (such as the set of all real numbers, or all real numbers within some limited range). The set of possible output values may be finite or countably infinite. The input and output sets involved in quantization can be defined in a rather general way. For example, vector quantizationis the application of quantization to multi-dimensional (vector-valued) input data.[


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Thanks


Aman Bansal


Askiitian Expert

4 years ago
Heerock Deka
14 Points
										

the smallest charge possible is the charge of an electron/proton(e) so all possible charge should be an integral multiple of e... this is quantization

4 years ago
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