Invention Grant
US08930202B2 Audio entropy encoder/decoder for coding contexts with different frequency resolutions and transform lengths
有权
用于编码具有不同频率分辨率和变换长度的上下文的音频熵编码器/解码器
- Patent Title: Audio entropy encoder/decoder for coding contexts with different frequency resolutions and transform lengths
- Patent Title (中): 用于编码具有不同频率分辨率和变换长度的上下文的音频熵编码器/解码器
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Application No.: US13004282Application Date: 2011-01-11
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Publication No.: US08930202B2Publication Date: 2015-01-06
- Inventor: Markus Multrus , Bernhard Grill , Guillaume Fuchs , Stefan Geyersberger , Nikolaus Rettelbach , Virgilio Bacigalupo
- Applicant: Markus Multrus , Bernhard Grill , Guillaume Fuchs , Stefan Geyersberger , Nikolaus Rettelbach , Virgilio Bacigalupo
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
- Current Assignee Address: DE Munich
- Agency: Perkins Coie LLP
- Agent Michael A. Glenn
- Main IPC: G10L19/02
- IPC: G10L19/02 ; H03M7/30 ; G10L19/022
Abstract:
An audio encoder for encoding segments of coefficients, the segments of coefficients representing different time or frequency resolutions of a sampled audio signal, the audio encoder including a processor for deriving a coding context for a currently encoded coefficient of a current segment based on a previously encoded coefficient of a previous segment, the previously encoded coefficient representing a different time or frequency resolution than the currently encoded coefficient. The audio encoder further includes an entropy encoder for entropy encoding the current coefficient based on the coding context to obtain an encoded audio stream.
Public/Granted literature
- US20110173007A1 Audio Encoder and Audio Decoder Public/Granted day:2011-07-14
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