发明申请
- 专利标题: Adaptive gain reduction for encoding a speech signal
- 专利标题(中): 用于对语音信号进行编码的自适应增益减小
-
申请号: US12218242申请日: 2008-07-11
-
公开(公告)号: US20080319740A1公开(公告)日: 2008-12-25
- 发明人: Huan-Yu Su , Yang Gao
- 申请人: Huan-Yu Su , Yang Gao
- 申请人地址: US CA Newport Beach
- 专利权人: MINDSPEED TECHNOLOGIES, INC.
- 当前专利权人: MINDSPEED TECHNOLOGIES, INC.
- 当前专利权人地址: US CA Newport Beach
- 主分类号: G10L19/14
- IPC分类号: G10L19/14
摘要:
There is provided a method of encoding an input speech signal. The method comprises identifying a fixed codebook vector from a fixed codebook; identifying an adaptive codebook vector from a adaptive codebook; calculating an adaptive codebook gain; reducing the adaptive codebook gain by an amount; optimally selecting a fixed codebook gain based on the adaptive codebook gain while both the fixed codebook vector and the adaptive codebook vector remain fixed; and converting the input speech signal into an encoded speech using the fixed codebook gain, the adaptive codebook gain, the fixed codebook vector and the adaptive codebook vector. The amount of reducing the adaptive codebook gain may be varied.
公开/授权文献
- US09269365B2 Adaptive gain reduction for encoding a speech signal 公开/授权日:2016-02-23