发明公开
EP2628155A1 AUDIO SIGNAL BANDWIDTH EXTENSION IN CELP-BASED SPEECH CODER
有权
BANDBREITENVERGRÖSSERUNGFÜRTONSIGNALE BEI EINEM SPRACHKODIERER AUF CELP-BASIS
- 专利标题： AUDIO SIGNAL BANDWIDTH EXTENSION IN CELP-BASED SPEECH CODER
- 专利标题（中）： BANDBREITENVERGRÖSSERUNGFÜRTONSIGNALE BEI EINEM SPRACHKODIERER AUF CELP-BASIS
-
申请号： EP11770021.1申请日： 2011-10-05
-
公开(公告)号： EP2628155A1公开(公告)日： 2013-08-21
- 发明人: GIBBS, Jonathan, A. , ASHLEY, James, P. , MITTAL, Udar
- 申请人： Motorola Mobility LLC
- 申请人地址： 600 North US Highway 45 Libertyville, IL 60048 US
- 专利权人： Motorola Mobility LLC
- 当前专利权人： Motorola Mobility LLC
- 当前专利权人地址： 600 North US Highway 45 Libertyville, IL 60048 US
- 代理机构： Boult Wade Tennant
- 优先权： INDE24572010 20101015
- 国际公布： WO2012051012 20120419
- 主分类号： G10L21/02
- IPC分类号： G10L21/02
摘要：
A method for decoding an audio signal having a bandwidth that extends beyond a bandwidth of a CELP excitation signal in an audio decoder including a CELP-based decoder element. The method includes obtaining a second excitation signal having an audio bandwidth extending beyond the audio bandwidth of the CELP excitation signal, obtaining a set of signals by filtering the second excitation signal with a set of bandpass filters, scaling the set of signals using a set of energy-based parameters, and obtaining a composite output signal by combining the scaled set of signals with a signal based on the audio signal decoded by the CELP-based decoder element.
公开/授权文献
- EP2628155B1 AUDIO SIGNAL BANDWIDTH EXTENSION IN CELP-BASED SPEECH CODER 公开/授权日：2018-07-25
信息查询
