发明公开
EP2346029A1 Audio encoder, method for encoding an audio signal, audio stream and computer program
有权
Vorrichtung und Verfahren zur Audiokodierung und korrespondierendes Computerprogramm
- 专利标题： Audio encoder, method for encoding an audio signal, audio stream and computer program
- 专利标题（中）： Vorrichtung und Verfahren zur Audiokodierung und korrespondierendes Computerprogramm
-
申请号： EP11157188.1申请日： 2009-06-25
-
公开(公告)号： EP2346029A1公开(公告)日： 2011-07-20
- 发明人: Rettelbach, Nikolaus , Grill, Bernhard , Fuchs, Guillaume , Geyersberger, Stefan , Multrus, Markus , Popp, Harald , Herre, Jürgen , Wabnik, Stefan , Schuller, Gerald , Hirschfeld, Jens
- 申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 申请人地址： Hansastrasse 27c 80686 München DE
- 专利权人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 当前专利权人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- 当前专利权人地址： Hansastrasse 27c 80686 München DE
- 代理机构： Burger, Markus
- 优先权： US79872P 20080711; US103820P 20081008
- 主分类号： G10L19/00
- IPC分类号： G10L19/00 ; G10L19/02
摘要：
An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal comprises a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also comprises an audio stream provider configured to provide the audio stream such that the audio stream comprises an information describing an audio content of the frequency bands and an information describing the multi-band quantization error.
A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal comprises a noise filler configured to introduce noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.
A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal comprises a noise filler configured to introduce noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.
公开/授权文献
信息查询
