发明名称 |
Audio encoder and bandwidth extension decoder |
摘要 |
An audio encoder for providing an output signal using an input audio signal comprises a patch generator, a comparator and an output interface. The patch generator generates at least one bandwidth extension high-frequency signal, wherein a bandwidth extension high-frequency signal comprises a high-frequency band. The high-frequency band of the bandwidth extension high-frequency signal is based on a low frequency band of the input audio signal. A comparator calculates a plurality of comparison parameters. A comparison parameter is calculated based on a comparison of the input audio signal and a generated bandwidth extension high-frequency signal. Each comparison parameter of the plurality of comparison parameters is calculated based on a different offset frequency between the input audio signal and a generated bandwidth extension high-frequency signal. Further, the comparator determines a comparison parameter from the plurality of comparison parameters, wherein the determined comparison parameter fulfills a predefined criterion. |
申请公布号 |
EP2945159(A1) |
申请公布日期 |
2015.11.18 |
申请号 |
EP20150167199 |
申请日期 |
2009.12.11 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
NAGEL, FREDERIK;FUCHS, GUILLAUME;DISCH, SASCHA;HERRE, JÜRGEN;GRIEBEL, CHRISTIAN |
分类号 |
G10L21/038;G10L19/00;G10L19/24 |
主分类号 |
G10L21/038 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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