发明授权
US07725312B2 Transcoding method and system between CELP-based speech codes with externally provided status
有权
基于CELP的语音代码与外部提供状态之间的转码方法和系统
- 专利标题： Transcoding method and system between CELP-based speech codes with externally provided status
- 专利标题（中）： 基于CELP的语音代码与外部提供状态之间的转码方法和系统
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申请号： US11711467申请日： 2007-02-26
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公开(公告)号： US07725312B2公开(公告)日： 2010-05-25
- 发明人: Marwan A. Jabri , Jianwei Wang , Stephen Gould
- 申请人： Marwan A. Jabri , Jianwei Wang , Stephen Gould
- 申请人地址： AU Broadway, NSW
- 专利权人： Dilithium Networks Pty Limited
- 当前专利权人： Dilithium Networks Pty Limited
- 当前专利权人地址： AU Broadway, NSW
- 代理机构： Townsend and Townsend and Crew LLP
- 主分类号： G10L19/14
- IPC分类号： G10L19/14
摘要：
A method for transcoding a CELP based compressed voice bitstream from source codec to destination codec. The method includes processing a source codec input CELP bitstream to unpack at least one or more CELP parameters from the input CELP bitstream and interpolating one or more of the plurality of unpacked CELP parameters from a source codec format to a destination codec format if a difference of one or more of a plurality of destination codec parameters including a frame size, a subframe size, and/or sampling rate of the destination codec format and one or more of a plurality of source codec parameters including a frame size, a subframe size, or sampling rate of the source codec format exist. The method includes encoding the one or more CELP parameters for the destination codec and processing a destination CELP bitstream by at least packing the one or more CELP parameters for the destination codec.
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