What Is Quantization?


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shahid tauqeer Profile
shahid tauqeer answered
Instead of transmitting the exact amplitude of the sampled signal, only certain discrete value closest to the true one is transmitted.
At the receiving end the signal value will have a value slightly different from any of the specified discrete steps due to noise and distortions encountered in the transmission channel.
If the disturbance is negligible, it will be possible to tell accurately which discrete value was transmitted and the original signal can be approximately reconstructed.

Quantizing is a process by which analog samples (from pulse amplitude modulated (PAM) signal) are classified into a number of adjacent quantizing intervals.
Each interval is represented by a single value called the Quantized Value.
This process introduces an error in the magnitude of the samples resulting in quantizing noise
However, once the information I sin quantized form, it can be sent over reasonable distance without further loss in quality through regeneration of the binary levels involved to counter distortion.
A group of on-off pulses can be used to represent 2 n discrete sample values.
Working range: the permitted range of values of an analog signal divided into quantizing intervals.
In quantizing telephone signals, the range of signals to be transmitted is divided into 256 intervals (8 bits).
Anonymous Profile
Anonymous answered
Quantization is a process of converting a continuos analog audio signal in to a digital with discrete numerical values

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