quantization distortion

quantization distortion

[‚kwän·tə′zā·shən di‚stȯr·shən]
(communications)
Inherent distortion introduced in the process of quantization of a waveform. Also known as quantization noise; quantumization distortion; quantumization noise.
References in periodicals archive ?
Wireline copper telephony is subject to long, aging wiring to residences, quantization distortion introduced by narrowband PCM codecs, and least-cost routing decisions which can result in quality issues," explained Michel Nadeau, President and CEO of Minacom, "It is no surprise that VoIP, delivered digitally from end-to-end can outperform the PSTN; with the introduction of wideband codecs and the ever-faster Internet backbone, we should expect that VoIP calls will soon be the next best thing to 'being there'.
The evaluation methodology was the internationally accepted computation of Quantization Distortion Unit (QDU).