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Definition: quantization

(1) The division of a range of values into a single number, code or classification. For example, class A is 0 to 999, class B is 1000 to 9999 and class C is 10000 and above.

(2) In analog to digital conversion, the assignment of a number to the amplitude of a wave. The larger the range of numbers, the finer the increments can be measured, and the more the digital sample represents the analog signal. See sampling and quantization error.