发明申请
US20110044461A1 APPARATUS AND METHOD FOR COMPUTING CONTROL INFORMATION FOR AN ECHO SUPPRESSION FILTER AND APPARATUS AND METHOD FOR COMPUTING A DELAY VALUE
有权
用于计算ECHO抑制过滤器的控制信息的装置和方法以及计算延迟值的装置和方法
- 专利标题: APPARATUS AND METHOD FOR COMPUTING CONTROL INFORMATION FOR AN ECHO SUPPRESSION FILTER AND APPARATUS AND METHOD FOR COMPUTING A DELAY VALUE
- 专利标题(中): 用于计算ECHO抑制过滤器的控制信息的装置和方法以及计算延迟值的装置和方法
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申请号: US12864240申请日: 2009-01-12
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公开(公告)号: US20110044461A1公开(公告)日: 2011-02-24
- 发明人: Fabian Kuech , Markus Kallinger , Christof Faller , Alexis Favrot
- 申请人: Fabian Kuech , Markus Kallinger , Christof Faller , Alexis Favrot
- 申请人地址: DE Munich
- 专利权人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人地址: DE Munich
- 优先权: DE102008039329.0 20080822
- 国际申请: PCT/EP2009/000123 WO 20090112
- 主分类号: H04B3/20
- IPC分类号: H04B3/20 ; H03G3/00
摘要:
An embodiment of an apparatus for computing control information for a suppression filter for filtering a second audio signal to suppress an echo based on a first audio signal includes a computer having a value determiner for determining at least one energy-related value for a band-pass signal of at least two temporally successive data blocks of at least one signal of a group of signals. The computer further includes a mean value determiner for determining at least one mean value of the at least one determined energy-related value for the band-pass signal. The computer further includes a modifier for modifying the at least one energy-related value for the band-pass signal on the basis of the determined mean value for the band-pass signal. The computer further includes a control information computer for computing the control information for the suppression filter on the basis of the at least one modified energy-related value.
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