发明公开
- 专利标题: AUDIO DECODING DEVICE
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申请号: EP22178627.0申请日: 2013-04-12
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公开(公告)号: EP4086898A1公开(公告)日: 2022-11-09
- 发明人: KIKUIRI, Kei , YAMAGUCHI, Atsushi
- 申请人: NTT DOCOMO, INC.
- 申请人地址: JP Tokyo 100-6150 Sanno Park Tower 11-1 Nagata-cho 2-chome Chiyoda-ku
- 代理机构: Viering, Jentschura & Partner mbB Patent- und Rechtsanwälte
- 优先权: JP2012254496 20121120
- 主分类号: G10L19/00
- IPC分类号: G10L19/00 ; G10L19/02 ; G10L19/24 ; G10L21/038
摘要:
An objective of the present invention is to correct a temporal envelope shape of a decoded signal with a small information volume and to reduce perceptible distortions. An audio decoding device which decodes a coded audio signal and outputs an audio signal comprises: a coded series analysis unit that analyzes a coded series which contains the coded audio signal; an audio decoding unit that receives from the coded series analysis unit the coded series which contains the coded audio signal and decodes same, obtaining an audio signal; a temporal envelope shape establishment unit that receives information from the coded series analysis unit and/or the audio decoding unit, and, on the basis of the information, establishes a temporal envelope shape of the decoded audio signal; and a temporal envelope correction unit that, on the basis of the temporal envelope shape which is established with the temporal envelope shape establishment unit, corrects the temporal envelope shape of the decoded audio signal and outputs same.
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