发明名称 |
DEVICE AND METHOD FOR A BANDWIDTH EXTENSION OF AN AUDIO SIGNAL |
摘要 |
<p>For a bandwidth extension of an audio signal, in a signal spreader the audio signal is temporally spread by a spread factor greater than 1. The temporally spread audio signal is then supplied to a demicator to decimate the temporally spread version by a decimation factor matched to the spread factor. The band generated by this decimation operation is extracted and distorted, and finally combined with the audio signal to obtain a bandwidth extended audio signal. A phase vocoder in the filterbank implementation or transformation implementation may be used for signal spreading.</p> |
申请公布号 |
CA2713744(A1) |
申请公布日期 |
2009.08.06 |
申请号 |
CA20092713744 |
申请日期 |
2009.01.20 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
NAGEL, FREDERIK;DISCH, SASCHA;NEUENDORF, MAX |
分类号 |
G10L21/02 |
主分类号 |
G10L21/02 |
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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