Method and Apparatus for determining watermark sym

专利名称：Method and Apparatus for determining

watermark symbols in a received audiosignal that can contain echoes, reverberationand/or noise

发明人：Chen, Xiao-Ming,Baum, Peter Georg,Arnold,

Michael,Gries, Ulrich

申请号：EP133025.4申请日：20130402公开号：EP2787504A1公开日：20141008

专利附图：

摘要：Following transmission of a watermarked audio signal over an acoustic pathcausing echoes, reverberation and/or noise, watermark detection correlation result peakvalues are concentrated within a limited temporal range around main correlation resultpeaks, which limited temporal range is much smaller than the total correlation length.The watermark detection is based on the following: given np correlation result peakvalues v=(v1, v2, ..., vnp) in an average or expected probability distribution for correlationresult values for unmarked content, the probability is calculated that within windowscovering the limited temporal range there are np or more values from a correlationresult value set greater than or equal to these peaks v.

申请人：Thomson Licensing

地址：1-5, rue Jeanne d'Arc 92130 Issy-les-Moulineaux FR

国籍：FR

代理机构：Hartnack, Wolfgang

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