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Tom.Reding (talk | contribs) m -redundant class param; cleanup |
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{{Merged-to|Quantization (signal processing)|date=2013-05-19}}
"Many physical quantities are actually quantized by physical entities. Examples of fields where this limitation applies include electronics (due to electrons), optics (due to photons), and chemistry (due to molecules). This is sometimes known as the "quantum noise limit" of systems in those fields. This is a different manifestation of "quantization error," in which theoretical models may be analog but physics occurs digitally. Around the quantum limit, the distinction between analog and digital quantities vanishes."
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== Redirection ==
The link to quantization noise redirect to itself ( = this page ). Since I'm not a regular wiki user I prefer just telling and letting someone "who knows" doing it [[Special:Contributions/213.121.242.200|213.121.242.200]] ([[User talk:213.121.242.200|talk]]) 22:46, 14 May 2008 (UTC)
== Misleading figure ==
The graphical representation of quantization error does not take into account how the digital signal is reconstructed. Quantization error is the difference between the [[signal reconstruction|reconstructed signal]] and the [[band limited]] original. --[[User:Kvng|Kvng]] ([[User talk:Kvng|talk]]) 19:20, 23 December 2010 (UTC)
:You are wrong, only offects sampling rate are affected by signal reconstruction. The example seems to use infinite sampling rate, so there is nothing to reconstruct. It is a bit misleading however, such signal is invalid, noise should be added prior to sampling.--[[Special:Contributions/90.179.235.249|90.179.235.249]] ([[User talk:90.179.235.249|talk]]) 19:20, 19 February 2011 (UTC)
::I did assume a finite sample rate. I can see how the figure is correct for a system with infinite sample rate. Infinite sample rate is not practical so I'm not convinced that this is a good illustration. --[[User:Kvng|Kvng]] ([[User talk:Kvng|talk]]) 03:12, 20 February 2011 (UTC)
:::It's an illustration of quantization error, not sample rate.--[[Special:Contributions/90.179.235.249|90.179.235.249]] ([[User talk:90.179.235.249|talk]]) 23:21, 20 February 2011 (UTC)
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