发明公开
- 专利标题： INTERPOLATION AND SIGNALLING OF SPACIAL RECONSTRUCTION PARAMETERS FOR MULTICHANNEL CODING AND DECODING OF AUDIO SOURCES
- 专利标题（中）： 插值和信令参数FOR空间重构的多声道编码和解码音频源
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申请号： EP05808103.5申请日： 2005-10-31
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公开(公告)号： EP1807824A1公开(公告)日： 2007-07-18
- 发明人: KJÖRLING, Kristofer , PURNHAGEN, Heiko , RÖDEN, Jonas , ENGDEGARD, Jonas
- 申请人： Coding Technologies AB
- 申请人地址： Gävlegatan 12 A 113 30 Stockholm SE
- 专利权人： Coding Technologies AB
- 当前专利权人： Coding Technologies AB
- 当前专利权人地址： Gävlegatan 12 A 113 30 Stockholm SE
- 代理机构： Zinkler, Franz
- 优先权： SE0402651 20041102
- 国际公布： WO2006058590 20060608
- 主分类号： G10L19/00
- IPC分类号： G10L19/00
摘要：
The present application relates to multichannel source encoding and decoding. On a coder-side, a parameter calculator calculates lower resolution parametric information such as binaural cues, interpolation control information representing the choice of one of a plurality of interpolation characteristics, and generates a downmixed set of channels of the source. On a decoder-side, an upmixer (500) is used for generating the output channels (502) based on a downmixed set of encoded channels. The upmixer (500) uses high resolution parametric information (506) generated by a parameter interpolator (508) based on the low resolution parametric information (510) and decoder-side derived interpolation information (512) or encoder-generated interpolation information (512) for selecting one of a plurality of different interpolation characteristics.
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