发明授权
EP3063761B1 AUDIO BANDWIDTH EXTENSION BY INSERTION OF TEMPORAL PRE-SHAPED NOISE IN FREQUENCY DOMAIN
有权
插入频率域中的时间预形成噪声的音频带宽扩展
- 专利标题： AUDIO BANDWIDTH EXTENSION BY INSERTION OF TEMPORAL PRE-SHAPED NOISE IN FREQUENCY DOMAIN
- 专利标题（中）： 插入频率域中的时间预形成噪声的音频带宽扩展
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申请号： EP14792794.1申请日： 2014-10-30
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公开(公告)号： EP3063761B1公开(公告)日： 2017-11-22
- 发明人: DISCH, Sascha , MULTRUS, Markus , SCHUBERT, Benjamin , SCHNELL, Markus
- 申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.
- 申请人地址： Hansastrasse 27C 80686 München DE
- 专利权人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.
- 当前专利权人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.
- 当前专利权人地址： Hansastrasse 27C 80686 München DE
- 代理机构： Schenk, Markus
- 优先权： EP13191127 20131031
- 国际公布： WO2015063227 20150507
- 主分类号： G10L19/02
- IPC分类号： G10L19/02 ; G10L19/028 ; G10L19/16 ; G10L21/038 ; G10L19/24 ; G10L19/03
摘要：
An audio decoder device for decoding a bitstream includes a bitstream receiver configured to receive the bitstream and to derive an encoded audio signal from the bitstream; a core decoder module configured for deriving a decoded audio signal in a time domain from the encoded audio signal; a temporal envelope generator configured to determine a temporal envelope of the decoded audio signal; a bandwidth extension module configured to produce a frequency domain bandwidth extension signal; a time-to-frequency converter configured to transform the decoded audio signal into a frequency domain decoded audio signal; a combiner configured to combine the frequency domain decoded audio signal and the frequency domain bandwidth extension signal in order to produce a bandwidth extended frequency domain audio signal; and a frequency-to-time converter configured to transform the bandwidth extended frequency domain audio signal into a bandwidth-extended time domain audio signal.
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