发明公开
EP2381574A1 Apparatus and method for modifying an input audio signal
有权
Vorrichtung und Verfahren zurÄnderungeines Audioeingangssignals
- 专利标题： Apparatus and method for modifying an input audio signal
- 专利标题（中）： Vorrichtung und Verfahren zurÄnderungeines Audioeingangssignals
-
申请号： EP10160679.6申请日： 2010-04-22
-
公开(公告)号： EP2381574A1公开(公告)日： 2011-10-26
- 发明人: Uhle, Christian , Herre, Juergen , Hellmuth, Oliver , Finauer, Stefan
- 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： Zinkler, Franz
- 主分类号： H03G3/32
- IPC分类号： H03G3/32 ; H04S7/00 ; G10L21/00 ; G10L21/02
摘要：
An apparatus for modifying an input audio signal comprises an excitation determiner, a storage device and a signal modifier. The excitation determiner determines a value of an excitation parameter of a subband of a plurality of subbands of the input audio signal based on an energy content of the subband. Further, the storage device stores a lookup table containing a plurality of spectral weighting factors. A spectral weighting factor of the plurality of spectral weighting factors is associated to a predefined value of the excitation parameter and a subband of the plurality of subbands. The storage device provides a spectral weighting factor corresponding to the determined value of the excitation parameter and corresponding to the subband, the value of the excitation parameter is determined for. Further, the signal modifier modifies a content of the subband of the audio signal, the value of the excitation parameter is determined for, based on the provided spectral weighting factor to provide a modified subband.
公开/授权文献
- EP2381574B1 Apparatus and method for modifying an input audio signal 公开/授权日：2014-12-03
信息查询
