Invention Grant
US07752052B2 Scalable coder and decoder performing amplitude flattening for error spectrum estimation
有权
执行幅度平坦化的可扩展编码器和解码器用于误差谱估计
- Patent Title: Scalable coder and decoder performing amplitude flattening for error spectrum estimation
- Patent Title (中): 执行幅度平坦化的可扩展编码器和解码器用于误差谱估计
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Application No.: US10512407Application Date: 2003-04-28
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Publication No.: US07752052B2Publication Date: 2010-07-06
- Inventor: Masahiro Oshikiri
- Applicant: Masahiro Oshikiri
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Dickinson Wright PLLC
- Priority: JP2002-127541 20020426; JP2002-267436 20020912
- International Application: PCT/JP03/05419 WO 20030428
- International Announcement: WO03/091989 WO 20031106
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L19/14 ; G10L11/06 ; G10L19/02 ; H04N11/02
Abstract:
A down-sampler 101 down-samples the sampling rate of an input signal from sampling rate FH to sampling rate FL. A base layer coder 102 encodes the sampling rate FL acoustic signal. A local decoder 103 decodes coding information output from base layer coder 102. An up-sampler 104 raises the sampling rate of the decoded signal to FH. A subtracter 106 subtracts the decoded signal from the sampling rate FH acoustic signal. An enhancement layer coder 107 encodes the signal output from subtracter 106 using a decoding result parameter output from local decoder 103.
Public/Granted literature
- US20050163323A1 Coding device, decoding device, coding method, and decoding method Public/Granted day:2005-07-28
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