发明名称 |
NOISE FILLER, NOISE FILLING PARAMETER CALCULATOR, METHOD FOR PROVIDING A NOISE FILLING PARAMETER, METHOD FOR PROVIDING A NOISE-FILLED SPECTRAL REPRESENTATION OF AN AUDIO SIGNAL, CORRESPONDING COMPUTER PROGRAM AND ENCODED AUDIO SIGNAL |
摘要 |
A noise filler for providing a noise-filled spectral representation of an audio signal on the basis of an input spectral representation of the audio signal comprises a spectral region identifier configured to identify spectral regions of the input spectral representation spaced from non-zero spectral regions of the input spectral representation by at least one intermediate spectral re-gion, to obtain identified spectral regions, and a noise inserter configured to selectively introduce noise into the identified spectral regions to obtain the noise-filled spectral representation of the audio signal. A noise filling parameter calculator for providing a noise filling parameter on the basis of a quantized spectral representation of an audio signal comprises a spectral region identifier, as mentioned above, and a noise value calculator configured to selectively consider quantization errors of the identified spectral regions for a calculation of the noise filling parameter. Accordingly, an encoded audio signal representation representing the audio signal can be obtained. |
申请公布号 |
CA2730536(C) |
申请公布日期 |
2014.12.02 |
申请号 |
CA20092730536 |
申请日期 |
2009.06.26 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
RETTELBACH, NIKOLAUS;GRILL, BERNHARD;FUCHS, GUILLAUME;GEYERSBERGER, STEFAN;MULTRUS, MARKUS;POPP, HARALD;HERRE, JUERGEN;WABNIK, STEFAN;SCHULLER, GERALD;HIRSCHFELD, JENS |
分类号 |
G10L19/028 |
主分类号 |
G10L19/028 |
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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