Difference between revisions of "Digital silence"
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Brad Johnson (talk | contribs) (Created page with "=Overview= The term "<nowiki>digital silence</nowiki>" is used to describe a digital audio signal which contains all "zeroes;" and therefore represents ''complete'' silence. =His...") |
Brad Johnson (talk | contribs) |
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=History= | =History= | ||
=Basics= | =Basics= | ||
| − | Although analog audio circuits can be designed to be extremely "low-noise" and therefore have no perceivable sound present unless amplified to an usually high level; there is always some noise present at the lowest levels. In digital audio; it is possible to have "complete silence" as represented by every bit in the digital audio word being a "0". When reproduced by a [[DA converter]] | + | Although analog audio circuits can be designed to be extremely "low-noise" and therefore have no perceivable sound present unless amplified to an usually high level; there is always some noise present at the lowest levels. In digital audio; it is possible to have "complete silence" as represented by every bit in the digital audio word being a "0". When reproduced by a [[DA converter]]; digital silence will cease to be absolute because of real-world limitations regarding noise in analog circuitry. |
| + | [[Category:Audio conversion]] | ||
| + | [[Category:Terminology]] | ||
Revision as of 17:05, 24 July 2012
Overview
The term "digital silence" is used to describe a digital audio signal which contains all "zeroes;" and therefore represents complete silence.
History
Basics
Although analog audio circuits can be designed to be extremely "low-noise" and therefore have no perceivable sound present unless amplified to an usually high level; there is always some noise present at the lowest levels. In digital audio; it is possible to have "complete silence" as represented by every bit in the digital audio word being a "0". When reproduced by a DA converter; digital silence will cease to be absolute because of real-world limitations regarding noise in analog circuitry.