发明申请
US20090292542A1 SIGNAL PROCESSING METHOD, PROCESSING APPARTUS AND VOICE DECODER
有权
信号处理方法,处理程序和语音解码器
- 专利标题: SIGNAL PROCESSING METHOD, PROCESSING APPARTUS AND VOICE DECODER
- 专利标题(中): 信号处理方法,处理程序和语音解码器
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申请号: US12539158申请日: 2009-08-11
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公开(公告)号: US20090292542A1公开(公告)日: 2009-11-26
- 发明人: Wuzhou ZHAN , Dongqi WANG , Yongfeng TU , Jing WANG , Qing ZHANG , Lei MIAO , Jianfeng XU , Chen HU , Yi YANG , Zhengzhong DU , Fengyan QI
- 申请人: Wuzhou ZHAN , Dongqi WANG , Yongfeng TU , Jing WANG , Qing ZHANG , Lei MIAO , Jianfeng XU , Chen HU , Yi YANG , Zhengzhong DU , Fengyan QI
- 申请人地址: CN Shenzhen, Guangdong
- 专利权人: HUAWEI TECHNOLOGIES CO., LTD.
- 当前专利权人: HUAWEI TECHNOLOGIES CO., LTD.
- 当前专利权人地址: CN Shenzhen, Guangdong
- 优先权: CN200710169616.1 20071105
- 主分类号: G10L13/00
- IPC分类号: G10L13/00
摘要:
The present invention discloses a signal processing method adapted to process a synthesized signal in packet loss concealment. The method includes the following steps: receiving a good frame following a lost frame, obtaining an energy ratio of energy of a signal in the signal of the good frame signal to energy of a synthesized signal corresponding to the same time of the good frame; and adjusting the synthesized signal in accordance with the energy ratio. The present invention also discloses a signal processing apparatus and a voice decoder. Through using the method provided by the present invention, the synthesized signal is adjusted in accordance with the energy ratio of the energy of the first good frame following the lost frame to the energy of the synthesized signal to ensure that there be not a waveform sudden change or an energy sudden change at the place where the lost frame and the first good frame following the lost frame are jointed in the synthesized signal, to realize the waveform's smooth transition and to avoid music noises.