发明名称 |
CONCEALMENT OF INTERMITTENT MONO RECEPTION OF FM STEREO RADIO RECEIVERS |
摘要 |
<p>The present invention relates to audio signal processing. In particular, it relates to a method and system for reliably concealing intermittent mono reception of FM stereo radio receivers. The system comprises a parametric stereo parameter estimation stage configured to determine a first parametric stereo parameter based on a first frame of the received two-channel audio signal. The system further comprises a concealment detection stage configured to determine an energy of a side signal within the first signal frame; determine a number of following successive signal frames during which the energy of the side signal drops from a value above the high threshold to a value below a low threshold; determine that the two-channel audio signal following the first signal frame is a forced mono signal if the number of successive signal frames is below a frame threshold; and determine the parametric stereo parameter based on the first parametric stereo parameter.</p> |
申请公布号 |
EP2609592(B1) |
申请公布日期 |
2014.11.05 |
申请号 |
EP20110754630 |
申请日期 |
2011.08.16 |
申请人 |
DOLBY INTERNATIONAL AB |
发明人 |
SEHLSTROM, LEIF;PURNHAGEN, HEIKO;ENGDEGARD, JONAS |
分类号 |
G10L19/008;G10L19/00;G10L19/005;G10L21/02 |
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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