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MPEG-1 Audio Layer II - 版本历史
2026-07-15T00:05:29Z
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imported>Bxxiaolin：/* 應用 */
2025-12-03T07:44:49Z
<p><span class="autocomment">應用</span></p>
<p><b>新页面</b></p><div>{{noteTA<br />
|G1=Communication<br />
|G2=IT<br />
|1=zh-cn:有损性; zh-tw:破壞性資料壓縮;<br />
}}<br />
{{Not|MPEG-2}}<br />
'''MPEG-1 Audio Layer II'''（有時簡稱'''MP2'''）是ISO/IEC 11172-3（[[MPEG-1]]音訊部份）中訂立之[[有损数据压缩|有損性]][[音訊壓縮]]格式。此標準還制訂了{{Tsl|en|MPEG-1 Audio Layer I|MPEG-1 Audio Layer I|MP1}}和[[MP3]]。個人電腦和互聯網音樂流行MP3，MP2則多用於廣播。<br />
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== 技術規格 ==<br />
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定義於ISO/IEC 11172-3<br />
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*[[取樣率]]: 32, 44.1及48 kHz<br />
*[[位元率]]: 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320及384 kbit/s<br />
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ISO/IEC 13818-3定義了用於MPEG-2 Layer II之延伸部份<br />
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*額外取樣率: 16, 22.05及24 kHz<br />
*額外位元率: 8, 16, 24, 40及144 kbit/s<br />
*[[MPEG Multichannel|多聲道]] - 最多五個全頻聲道及一個超低音聲道<br />
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==應用==<br />
[[DAB]]及[[DVB]]。<br />
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[[PAL制式|PAL]]地區出售之[[DVD-Video]]播放機需內置立體聲MP2解碼器，[[NTSC]]地區則不需要。<br />
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[[Video CD]]及[[Super Video CD]]之標準音軌（SVCD另支援5.1多聲道〔{{link-en|MPEG Multichannel|MPEG Multichannel}}〕）。<br />
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[[HDV]]攝錄機音軌。<br />
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[[中国数字地面电视|中国大陆]]、[[香港數碼地面電視廣播#技術標準|香港]]、[[澳門數碼地面電視廣播|澳門]]數碼電視廣播。<br />
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==另見==<br />
* [[MPEG-1]]<br />
** [[MPEG-1 Audio Layer I]]<br />
** [[MP3|MPEG-1 Audio Layer III]]<br />
* [[MPEG-2]]<br />
* [[MPEG-4 Part 14|MP4 (容器格式)]]<br />
* {{link-en|MPEG 基礎串流|Elementary stream}}<br />
* [[Musepack]] originally MP2-based, with numerous improvements<br />
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==注釋==<br />
{{reflist}}<br />
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==外部連結==<br />
* [https://web.archive.org/web/20070430233709/http://www.iis.fraunhofer.de/fhg/iis/EN/bf/amm/mp3history/index.jsp The history of MP3 from Fraunhofer IIS]<br />
* [https://web.archive.org/web/20021214015841/http://www.mpeg.org/MPEG/audio.html MPEG Audio Resources and Software]<br />
* [http://toolame.sourceforge.net/ TooLAME] {{Wayback|url=http://toolame.sourceforge.net/ |date=20201026032044 }} - an MP2 encoder<br />
* [http://www.twolame.org/ TwoLAME] {{Wayback|url=http://www.twolame.org/ |date=20201125173627 }} - a fork of the tooLAME code<br />
* [http://www.faqs.org/rfcs/rfc3003.html RFC 3003] {{Wayback|url=http://www.faqs.org/rfcs/rfc3003.html |date=20200927173739 }} - The document defining MIME type for MPEG-1 Audio Layer II<br />
* [https://web.archive.org/web/20090214074004/http://keyj.s2000.ws/?p=50 A MPEG Audio Layer II decoder in 4k] Source code for small open source decoder.<br />
* [https://web.archive.org/web/20081109215716/http://www.chiariglione.org/mpeg/ Official MPEG web site]<br />
* [http://www.kuro5hin.org/story/2008/7/18/232618/312 Patent Status of MPEG-1, H.261 and MPEG-2] {{Wayback|url=http://www.kuro5hin.org/story/2008/7/18/232618/312 |date=20080916215441 }} - some informations about patents<br />
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{{Compression Formats}}<br />
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[[Category:音频格式]]<br />
[[Category:MPEG]]</div>
imported>Bxxiaolin