发明名称 |
ENCODER, DECODER AND METHODS FOR SIGNAL-DEPENDENT ZOOM-TRANSFORM IN SPATIAL AUDIO OBJECT CODING |
摘要 |
A decoder for generating an audio output signal comprising one or more audio output channels from a downmix signal comprising a plurality of time-domain downmix samples is provided. The downmix signal encodes two or more audio object signals. The decoder comprises a window-sequence generator (134) for determining a plurality of analysis windows, wherein each of the analysis windows comprises a plurality of time-domain downmix samples of the downmix signal. Each analysis window of the plurality of analysis windows has a window length indicating the number of the time-domain downmix samples of said analysis window. The window-sequence generator (134) is configured to determine the plurality of analysis windows so that the window length of each of the analysis windows depends on a signal property of at least one of the two or more audio object signals. Moreover, the decoder comprises a t/f-analysis module (135) for transforming the plurality of time-domain downmix samples of each analysis window of the plurality of analysis windows from a time-domain to a time-frequency domain depending on the window length of said analysis window, to obtain a transformed downmix. Furthermore, the decoder comprises an un-mixing unit (136) for un-mixing the transformed downmix based on parametric side information on the two or more audio object signals to obtain the audio output signal. Moreover, an encoder is provided. |
申请公布号 |
HK1213361(A1) |
申请公布日期 |
2016.06.30 |
申请号 |
HK20160101374 |
申请日期 |
2016.02.05 |
申请人 |
Fraunhofer-Gesellschaft zur Frderung der angewandt |
发明人 |
DISCH, Sascha;PAULUS, Jouni;EDLER, Bernd;HELLMUTH, Oliver;HERRE, Jrgen;KASTNER, Thorsten |
分类号 |
G10L |
主分类号 |
G10L |
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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