发明授权
EP2283483B1 A PARAMETRIC STEREO UPMIX APPARATUS, A PARAMETRIC STEREO DECODER, A PARAMETRIC STEREO DOWNMIX APPARATUS, A PARAMETRIC STEREO ENCODER
有权
参数立体声上混合设备，参数立体声解码器，参数立体声下混合设备，参数立体声编码器
- 专利标题： A PARAMETRIC STEREO UPMIX APPARATUS, A PARAMETRIC STEREO DECODER, A PARAMETRIC STEREO DOWNMIX APPARATUS, A PARAMETRIC STEREO ENCODER
- 专利标题（中）： 参数立体声上混合设备，参数立体声解码器，参数立体声下混合设备，参数立体声编码器
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申请号： EP09750232.2申请日： 2009-05-14
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公开(公告)号： EP2283483B1公开(公告)日： 2013-03-13
- 发明人: SCHUIJERS, Erik, G., P.
- 申请人： Koninklijke Philips Electronics N.V.
- 申请人地址： Groenewoudseweg 1 5621 BA Eindhoven NL
- 专利权人： Koninklijke Philips Electronics N.V.
- 当前专利权人： Koninklijke Philips Electronics N.V.
- 当前专利权人地址： Groenewoudseweg 1 5621 BA Eindhoven NL
- 代理机构： Coops, Peter
- 优先权： EP08156801 20080523
- 国际公布： WO2009141775 20091126
- 主分类号： G10L19/00
- IPC分类号： G10L19/00 ; H04S3/02
摘要：
A parametric stereo upmix apparatus generates left and right signals from a mono downmix signal based on spatial parameters. The parametric stereo upmix includes a predictor configured to predict a difference signal including a difference between the left and right signals based on the mono downmix signal scaled with a prediction coefficient. The prediction coefficient is derived from the spatial parameters. The parametric stereo upmix apparatus further includes an arithmetic unit configured to derive the left and right signals based on a sum and a difference of the mono downmix signal and the difference signal.
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