发明名称 |
Apparatus and method for restoring multi-channel audio signal using HE-AAC decoder and MPEG surround decoder |
摘要 |
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. |
申请公布号 |
US8611547(B2) |
申请公布日期 |
2013.12.17 |
申请号 |
US20070307289 |
申请日期 |
2007.07.04 |
申请人 |
SEO JEONG-IL;BEACK SEUNG-KWON;JANG IN-SEON;JANG DAE-YOUNG;HONG JIN-WOO;KIM JIN-WOONG;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 |
H04R5/00 |
主分类号 |
H04R5/00 |
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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