发明名称 |
APPARATUS AND METHOD FOR GENERATING AN AMBIENT SIGNAL FROM AN AUDIO SIGNAL, APPARATUS AND METHOD FOR DERIVING A MULTI-CHANNEL AUDIO SIGNAL FROM AN AUDIO SIGNAL AND COMPUTER PROGRAM |
摘要 |
An apparatus for generating an ambient signal from an audio signal includes a compressor for lossy compression of a representation of the audio signal so as to obtain a compressed representation of the audio signal describing a compressed audio signal. The apparatus for generating the ambient signal further includes a calculator for calculating a difference between the compressed representation of the audio signal and the representation of the audio signal so as to obtain a discrimination representation. The apparatus further includes a provider for providing the ambient signal using the discrimination representation. An apparatus for deriving a multi-channel audio signal from an audio signal includes an apparatus for generating an ambient signal from an audio signal, an apparatus for providing the audio signal as a front-loudspeaker signal and an apparatus for providing the ambient signal as a back-loudspeaker signal.
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申请公布号 |
US2010030563(A1) |
申请公布日期 |
2010.02.04 |
申请号 |
US20070440058 |
申请日期 |
2007.10.23 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAN |
发明人 |
UHLE CHRISTIAN;HERRE JUERGEN;WALTHER ANDREAS;HELLMUTH OLIVER;JANSSEN CHRISTIAAN |
分类号 |
G10L21/00;G10L19/00;G10L19/008;G10L19/02 |
主分类号 |
G10L21/00 |
代理机构 |
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