发明名称 |
METHOD AND APPARATUS FOR SIGNAL-ADAPTIVE TRANSFORM KERNEL SWITCHING IN AUDIO CODING |
摘要 |
A schematic block diagram of a decoder 2 for decoding an encoded audio signal 4 is shown. The decoder comprises an adaptive spectrum-time converter 6 and an overlap-add-processor 8. The adaptive spectrum-time converter converts successive blocks of spectral values 4' into successive blocks of time values 10, e.g. via a frequency-to-time transform. Furthermore, the adaptive spectrum-time converter 6 receives a control information 12 and switches, in response to the control information 12, between transform kernels of a first group of transform kernels comprising one or more transform kernels having different symmetries at sides of a kernel, and a second group of transform kernels comprising one or more transform kernels having the same symmetries at sides of a transform kernel. Moreover, the overlap-add-processor 8 overlaps and adds the successive blocks of time values 10 to obtain decoded audio values 14, which may be a decoded audio signal. |
申请公布号 |
EP3067889(A1) |
申请公布日期 |
2016.09.14 |
申请号 |
EP20150172542 |
申请日期 |
2015.06.17 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.;FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG |
发明人 |
HELMRICH, CHRISTIAN;EDLER, BERND |
分类号 |
G10L19/18;G10L19/008;G10L19/02 |
主分类号 |
G10L19/18 |
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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