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公开(公告)号：US09639605B2
公开(公告)日：2017-05-02
申请号：US15085703
申请日：2016-03-30
CPC分类号： G06F17/30743 , G06F3/165 , G11B20/10527 , H04H60/37 , H04H60/58 , H04H2201/90
摘要： Example signature comparison methods disclosed herein include accessing a first set of values from a query signature based on a first index value, the first set of values determined based on a corresponding set of first angles between a first reference line and respective first lines tangent to first functions defined from first frequency band values determined for monitored audio. Disclosed example methods also include accessing a second set of values from a reference signature based on the first index value. Disclosed example methods further include computing a first correlation coefficient based on the first and second sets of values, and comparing a set of correlation coefficients including the first correlation coefficient to a threshold to determine whether the query and reference signatures match.
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公开(公告)号：US09971832B2
公开(公告)日：2018-05-15
申请号：US15496890
申请日：2017-04-25
CPC分类号： G06F17/30743 , G06F3/165 , G11B20/10527 , H04H60/37 , H04H60/58 , H04H2201/90
摘要： Example signature generation methods disclosed herein include transforming a block of signal samples from a time-domain representation to a frequency-domain representation including multiple frequency bands. Disclosed example signature generation methods also include fitting a signature function to at least a subset of the frequency bands. Disclosed example signature generation methods further include generating a set of signature values representative of the block of signal samples, the signature values generated based on a set of angles calculated using the signature function.
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公开(公告)号：US20170228458A1
公开(公告)日：2017-08-10
申请号：US15496890
申请日：2017-04-25
CPC分类号： G06F17/30743 , G06F3/165 , G11B20/10527 , H04H60/37 , H04H60/58 , H04H2201/90
摘要： Example signature generation methods disclosed herein include transforming a block of signal samples from a time-domain representation to a frequency-domain representation including multiple frequency bands. Disclosed example signature generation methods also include fitting a signature function to at least a subset of the frequency bands. Disclosed example signature generation methods further include generating a set of signature values representative of the block of signal samples, the signature values generated based on a set of angles calculated using the signature function.
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公开(公告)号：US20160072599A1
公开(公告)日：2016-03-10
申请号：US14512663
申请日：2014-10-13
CPC分类号： G06F17/30743 , G06F3/165 , G11B20/10527 , H04H60/37 , H04H60/58 , H04H2201/90
摘要： Methods and apparatus to generate signatures representative of media are disclosed. An example method includes transforming a block of samples from a time-domain representation to a frequency-domain representation comprising multiple frequency bands, determining a signature function by fitting a curve to at least a subset of the frequency bands, and calculating signature values for the block. Calculating the tuple includes calculating a first angle between a reference line and a first line that is tangent to the signature function at a first index, calculating a second angle between the reference line and a second line that is tangent to the signature function at a second index, calculating a third angle between the reference line and a third line that is tangent to the signature function at a third index, and creating the signature values based on the first angle, the second angle, and the third angle.
摘要翻译： 公开了生成代表媒体的签名的方法和装置。 示例性方法包括将来自时域表示的样本块变换为包括多个频带的频域表示，通过将曲线拟合到至少一个频带的子集来确定签名函数，以及计算签名值 块。 计算所述元组包括计算在第一索引处与所述签名函数相切的参考线与第一线之间的第一角度，计算所述参考线与第二线之间的第二角度，所述第二角度与所述签名功能的第二线成正切 索引，在第三索引处计算参考线和与签名函数相切的第三线之间的第三角度，以及基于第一角度，第二角度和第三角度创建签名值。
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公开(公告)号：US09548830B2
公开(公告)日：2017-01-17
申请号：US14512663
申请日：2014-10-13
CPC分类号： G06F17/30743 , G06F3/165 , G11B20/10527 , H04H60/37 , H04H60/58 , H04H2201/90
摘要： Methods and apparatus to generate signatures representative of media are disclosed. An example method includes transforming a block of samples from a time-domain representation to a frequency-domain representation comprising multiple frequency bands, determining a signature function by fitting a curve to at least a subset of the frequency bands, and calculating signature values for the block. Calculating the tuple includes calculating a first angle between a reference line and a first line that is tangent to the signature function at a first index, calculating a second angle between the reference line and a second line that is tangent to the signature function at a second index, calculating a third angle between the reference line and a third line that is tangent to the signature function at a third index, and creating the signature values based on the first angle, the second angle, and the third angle.
摘要翻译： 公开了生成代表媒体的签名的方法和装置。 示例性方法包括将来自时域表示的样本块变换为包括多个频带的频域表示，通过将曲线拟合到至少一个频带的子集来确定签名函数，以及计算签名值 块。 计算所述元组包括计算在第一索引处与所述签名函数相切的参考线与第一线之间的第一角度，计算所述参考线与第二线之间的第二角度，所述第二角度与所述签名功能的第二线成正切 索引，在第三索引处计算参考线和与签名函数相切的第三线之间的第三角度，以及基于第一角度，第二角度和第三角度创建签名值。
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公开(公告)号：US20160210356A1
公开(公告)日：2016-07-21
申请号：US15085703
申请日：2016-03-30
CPC分类号： G06F17/30743 , G06F3/165 , G11B20/10527 , H04H60/37 , H04H60/58 , H04H2201/90
摘要： Example signature comparison methods disclosed herein include accessing a first set of values from a query signature based on a first index value, the first set of values determined based on a corresponding set of first angles between a first reference line and respective first lines tangent to first functions defined from first frequency band values determined for monitored audio. Disclosed example methods also include accessing a second set of values from a reference signature based on the first index value. Disclosed example methods further include computing a first correlation coefficient based on the first and second sets of values, and comparing a set of correlation coefficients including the first correlation coefficient to a threshold to determine whether the query and reference signatures match.
摘要翻译： 本文公开的示例性签名比较方法包括基于第一索引值来从查询签名访问第一组值，所述第一组值基于第一参考线与第一参考线相切的相应第一行之间的对应的一组第一角度确定 功能由为监视音频确定的第一个频带值定义。 公开的示例性方法还包括基于第一索引值从参考签名访问第二组值。 公开的示例性方法还包括基于第一和第二组值来计算第一相关系数，并将包括第一相关系数的一组相关系数与阈值进行比较，以确定查询和参考签名是否匹配。
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