Difference between revisions of "Dither"
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Brad Johnson (talk | contribs) (Created page with "=Overview== The term <nowiki>dither</nowiki> is used to describe a special form of wide-band noise that is added to a digital audio signal after the wordlength is reduced. Th...") |
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| − | =Overview | + | =Overview= |
The term <nowiki>dither</nowiki> is used to describe a special form of wide-band noise that is added to a digital audio signal after the [[wordlength]] is reduced. The purpose is to randomize quantization error of low level signals. | The term <nowiki>dither</nowiki> is used to describe a special form of wide-band noise that is added to a digital audio signal after the [[wordlength]] is reduced. The purpose is to randomize quantization error of low level signals. | ||
| − | + | =Basics= | |
| − | In digital audio, the original analog signal [[amplitude]] must be encoded in discrete "steps." | + | In digital audio, the original analog signal [[amplitude]] must be encoded in discrete "steps." The number of possible steps is determined by the [[wordlength]]. |
[http://en.wikipedia.org/wiki/Dither For more detailed information click here] | [http://en.wikipedia.org/wiki/Dither For more detailed information click here] | ||
Revision as of 16:38, 3 July 2012
Overview
The term dither is used to describe a special form of wide-band noise that is added to a digital audio signal after the wordlength is reduced. The purpose is to randomize quantization error of low level signals.
Basics
In digital audio, the original analog signal amplitude must be encoded in discrete "steps." The number of possible steps is determined by the wordlength.