Invention Grant
US08744863B2 Multi-mode audio encoder and audio decoder with spectral shaping in a linear prediction mode and in a frequency-domain mode
有权
具有线性预测模式和频域模式的频谱整形的多模式音频编码器和音频解码器
- Patent Title: Multi-mode audio encoder and audio decoder with spectral shaping in a linear prediction mode and in a frequency-domain mode
- Patent Title (中): 具有线性预测模式和频域模式的频谱整形的多模式音频编码器和音频解码器
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Application No.: US13441469Application Date: 2012-04-06
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Publication No.: US08744863B2Publication Date: 2014-06-03
- Inventor: Max Neuendorf , Guillaume Fuchs , Nikolaus Rettelbach , Tom Baeckstroem , Jeremie Lecomte , Juergen Herre
- Applicant: Max Neuendorf , Guillaume Fuchs , Nikolaus Rettelbach , Tom Baeckstroem , Jeremie Lecomte , Juergen Herre
- 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: G10L19/00
- IPC: G10L19/00
Abstract:
A multi-mode audio signal decoder has a spectral value determinator to obtain sets of decoded spectral coefficients for a plurality of portions of an audio content and a spectrum processor configured to apply a spectral shaping to a set of spectral coefficients in dependence on a set of linear-prediction-domain parameters for a portion of the audio content encoded in a linear-prediction mode, and in dependence on a set of scale factor parameters for a portion of the audio content encoded in a frequency-domain mode. The audio signal decoder has a frequency-domain-to-time-domain converter configured to obtain a time-domain audio representation on the basis of a spectrally-shaped set of decoded spectral coefficients for a portion of the audio content encoded in the linear-prediction mode and for a portion of the audio content encoded in the frequency domain mode. An audio signal encoder is also described.
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