发明名称 |
AUDIO ENCODER AND BANDWIDTH EXTENSION DECODER |
摘要 |
<p>An audio encoder for providing an output signal using an input audio signal includes 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 includes 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 fulfils a predefined criterion.</p> |
申请公布号 |
CA2908847(A1) |
申请公布日期 |
2010.06.24 |
申请号 |
CA20092908847 |
申请日期 |
2009.12.11 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
NAGEL, FREDERIK;DISCH, SASCHA;FUCHS, GUILLAUME;HERRE, JURGEN;GRIEBEL, CHRISTIAN |
分类号 |
G10L21/0388;G10L19/02 |
主分类号 |
G10L21/0388 |
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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