发明授权
EP1259956B1 METHOD OF AND APPARATUS FOR CONVERTING AN AUDIO SIGNAL BETWEEN DATA COMPRESSION FORMATS
有权
方法和设备的音频信号之间的不同的数据压缩格式的转换
- 专利标题: METHOD OF AND APPARATUS FOR CONVERTING AN AUDIO SIGNAL BETWEEN DATA COMPRESSION FORMATS
- 专利标题(中): 方法和设备的音频信号之间的不同的数据压缩格式的转换
-
申请号: EP01905928.6申请日: 2001-02-19
-
公开(公告)号: EP1259956B1公开(公告)日: 2005-08-03
- 发明人: WOODWARD, Michael, Vincent , FERRIS, Gavin, Robert
- 申请人: Radioscape Limited
- 申请人地址: 2 Albany Terrace London NW1 4DS GB
- 专利权人: Radioscape Limited
- 当前专利权人: Radioscape Limited
- 当前专利权人地址: 2 Albany Terrace London NW1 4DS GB
- 代理机构: Langley, Peter James
- 优先权: GB0003954 20000218
- 国际公布: WO2001061686 20010823
- 主分类号: G10L19/02
- IPC分类号: G10L19/02 ; G10L19/14
摘要:
Useful subband information which is present in a first audio signal (for example, MPEG 1 Layer II) is discarded in the conventional approach of format conversion, only to be regenerated when encoding to the target format (for example, MPEG 1 Layer III). Instead, in the present invention, this useful subband information is re-used directly or indirectly in order to eliminate the conventional requirement to fully decode to PCM and then encode again.
公开/授权文献
信息查询