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1. 发明申请

WO2011160966A1 AUDIO WATERMARKING 审中-公开
标题翻译：音频水印
公开(公告)号：WO2011160966A1
公开(公告)日：2011-12-29
申请号：PCT/EP2011/059688
申请日：2011-06-10
申请人： NATIONAL UNIVERSITY OF IRELAND, MAYNOOTH , WANG, Jian , HEALY, Ron , TIMONEY, Joseph
发明人： WANG, Jian , HEALY, Ron , TIMONEY, Joseph
IPC分类号： G10L19/00
CPC分类号： G10L19/018
摘要： A method of providing a digital watermark in an audio signal comprises selecting a key frequency value determining how watermark information is to be embedded into a first time frame of the audio signal. A plurality of discrete frequency component values of the audio signal is provided for the first time frame. At least two frequency components for the time frame are selected as a function of the key frequency value. The two frequency components are tested to determine if they meet a given mutual criterion for the signal in the first time frame. If the components do not meet the criterion, the magnitude of at least one of the two frequency components is adjusted in the first time frame.
摘要翻译：一种在音频信号中提供数字水印的方法包括：选择确定水印信息如何被嵌入到音频信号的第一时间帧中的关键频率值。在第一时间帧中提供音频信号的多个离散频率分量值。作为键频率值的函数，选择用于时间帧的至少两个频率分量。测试两个频率分量以确定它们是否满足在第一时间帧中的信号的给定相互准则。如果组件不符合标准，则在第一时间帧中调整两个频率分量中的至少一个的幅度。

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