Invention Grant
US08811621B2 Parametric stereo upmix apparatus, a parametric stereo decoder, a parametric stereo downmix apparatus, a parametric stereo encoder
有权
参数立体声上混装置，参数立体声解码器，参数立体声下混装置，参数立体声编码器
- Patent Title: Parametric stereo upmix apparatus, a parametric stereo decoder, a parametric stereo downmix apparatus, a parametric stereo encoder
- Patent Title (中): 参数立体声上混装置，参数立体声解码器，参数立体声下混装置，参数立体声编码器
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Application No.: US12992317Application Date: 2009-05-14
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Publication No.: US08811621B2Publication Date: 2014-08-19
- Inventor: Erik Gosuinus Petrus Schuijers
- Applicant: Erik Gosuinus Petrus Schuijers
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips N.V.
- Current Assignee: Koninklijke Philips N.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP08156801 20080523
- International Application: PCT/IB2009/052009 WO 20090514
- International Announcement: WO2009/141775 WO 20091126
- Main IPC: H04R5/00
- IPC: H04R5/00 ; H04S3/02
Abstract:
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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