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G.729 - 版本历史
2026-07-18T19:56:38Z
本wiki上该页面的版本历史
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2021年5月4日 (二) 17:04 imported>Bellaren3600
2021-05-04T17:04:55Z
<p></p>
<p><b>新页面</b></p><div>{{Infobox technology standard<br />
| title = G.729<br />
| long_name = 音頻編碼演算法<br />
| image = Pcm.svg <br />
| caption =<br />
| status = 已生效<br />
| year_started =1996<br />
| version = （10/17）<br />
| version_date = October 2017<br />
| preview =<br />
| preview_date =<br />
| organization = [[ITU-T]]<br />
| committee =<br />
| base_standards =<br />
| related_standards = [[G.191]] G.711 G.729.1<br />
| abbreviation =<br />
| domain =<br />
| license =<br />
| website = https://www.itu.int/rec/T-REC-G.729/<br />
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}}<br />
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'''G.729'''是[[ITU-T]] 定義的音頻編碼演算法，frame 只有10ms，G.729点到点的时延为25ms，G.729基於[[CELP]]模式，用[[CS-ACELP]]（Conjugate-Structure Algebraic Code Excited Linear Prediction）方法以8Kbps的波特率對語音進行編碼。<ref>{{Cite web|title=ITU|url=https://www.itu.int/rec/T-REC-G.729/|archiveurl=https://web.archive.org/web/20210406195519/https://www.itu.int/rec/T-REC-G.729|archivedate=06.04.2021}}</ref><br />
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G.729 幾乎都使用於 Voice over IP（[[VoIP]]），G.711編解碼器可將VoIP壓縮至 65Kb/s，使之可以在區域網上傳輸。<br />
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外部链接<br />
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* [http://www.itu.int/rec/recommendation.asp?type=folders&lang=e&parent=T-REC-G.729 ITU-T G.729 page]<br />
* [https://web.archive.org/web/20081030043328/http://www.cs.columbia.edu/techreports/cucs-016-01.pdf#search=%22g.729%20error%20recovery%20for%20internet%20telephony%22 G.729 Error Recovery for Internet Telephony]<br />
* [http://www.itu.int/ITU-T/dbase/patent/index.html ITU Patent database]{{Wayback|url=http://www.itu.int/ITU-T/dbase/patent/index.html |date=20081126101650 }}<br />
* [http://www.sipro.com/ Sipro administers the patent pool for G.723.1 and G.729]{{Wayback|url=http://www.sipro.com/ |date=20121225140523 }}<br />
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{{多媒體壓縮格式}}参考：<br />
[[Category:音頻編解碼器]]<br />
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[[Category:ITU-T建议书]]</div>
imported>Bellaren3600