Invention Grant
US09129597B2 Audio signal decoder, audio signal encoder, methods and computer program using a sampling rate dependent time-warp contour encoding
有权
音频信号解码器，音频信号编码器，方法和计算机程序使用采样率相关的时间 - 扭曲轮廓编码
- Patent Title: Audio signal decoder, audio signal encoder, methods and computer program using a sampling rate dependent time-warp contour encoding
- Patent Title (中): 音频信号解码器，音频信号编码器，方法和计算机程序使用采样率相关的时间 - 扭曲轮廓编码
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Application No.: US13604869Application Date: 2012-09-06
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Publication No.: US09129597B2Publication Date: 2015-09-08
- Inventor: Stefan Bayer , Tom Baeckstroem , Ralf Geiger , Bernd Edler , Sascha Disch , Lars Villemoes
- Applicant: Stefan Bayer , Tom Baeckstroem , Ralf Geiger , Bernd Edler , Sascha Disch , Lars Villemoes
- Applicant Address: DE Munich NL Amsterdam Zuid-Oost
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.,Dolby International AB
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.,Dolby International AB
- Current Assignee Address: DE Munich NL Amsterdam Zuid-Oost
- Agency: Perkins Coie LLP
- Agent Michael A. Glenn
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L19/022 ; G10L19/02 ; G10L25/90
Abstract:
An audio signal decoder configured to provide a decoded audio signal representation on the basis of an encoded audio signal representation including a sampling frequency information, an encoded time warp information and an encoded spectrum representation includes a time warp calculator and a warp decoder. The time warp calculator is configured to adapt a mapping rule for mapping codewords of the encoded time warp information onto decoded time warp values describing the decoded time warp information in dependence on the sampling frequency information. The warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded spectrum representation and in dependence on the decoded time warp information.
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