发明名称 |
Apparatus for restoring multi-channel audio signal using HE-AAC decoder and MPEG surround decoder |
摘要 |
<p>Provided is a method for controlling synchronizing downmix signals and MPEG surround side information signals by controlling a delay according to the kind of downmix audio signals in an MPEG surround decoder. When multi-channel audio signals are restored using an HE-AAC decoder and a low-power MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter. Anther delay unit delays spatial parameters to compensate for a delay caused in QMF and Nyquist banks when time-domain downmix signals are used. Also, when multi-channel audio signals are restored using an HE-AAC decoder and a high-quality MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter.</p> |
申请公布号 |
EP2469511(A1) |
申请公布日期 |
2012.06.27 |
申请号 |
EP20120158539 |
申请日期 |
2007.07.04 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
SEO, JEONG-IL;BEACK, SEUNG-KWON;JANG, IN-SEON;JANG, DAE-YOUNG;HONG, JIN-WOO;KIM, JIN-WOONG |
分类号 |
G10L19/008;G10L19/02;G10L19/18 |
主分类号 |
G10L19/008 |
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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