Invention Grant
- Patent Title: Optimized low-bit rate parametric coding/decoding
- Patent Title (中): 优化的低比特率参数编码/解码
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Application No.: US13502316Application Date: 2010-10-15
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Publication No.: US09167367B2Publication Date: 2015-10-20
- Inventor: Thi Minh Nguyet Hoang , Stephane Ragot , Balazs Kovesi
- Applicant: Thi Minh Nguyet Hoang , Stephane Ragot , Balazs Kovesi
- Applicant Address: FR Paris
- Assignee: FRANCE TELECOM
- Current Assignee: FRANCE TELECOM
- Current Assignee Address: FR Paris
- Agency: Westman, Champlin & Koehler, P.A.
- Agent David D. Brush
- Priority: FR0957254 20091015
- International Application: PCT/FR2010/052192 WO 20101015
- International Announcement: WO2011/045548 WO 20110421
- Main IPC: H04R5/00
- IPC: H04R5/00 ; H04S3/00 ; G10L19/008 ; G10L19/16
Abstract:
A parametric coding method and apparatus are provided for coding a multichannel digital audio signal. The method includes a coding step for coding a signal from a channel reduction matrixing of the multichannel signal. The coding method also includes: obtaining, for each frame of predetermined length, spatial information parameters of the multichannel signal; dividing the spatial information parameters into a plurality of blocks of parameters; selecting a block of parameters as a function of the index of the current frame; and coding the block of parameters selected for the current frame.
Public/Granted literature
- US20120207311A1 OPTIMIZED LOW-BIT RATE PARAMETRIC CODING/DECODING Public/Granted day:2012-08-16
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