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11. 发明申请

US20140105448A1 METHODS AND APPARATUS TO PERFORM AUDIO WATERMARK DETECTION AND EXTRACTION 有权
标题翻译：执行音频水印检测和提取的方法和设备
公开(公告)号：US20140105448A1
公开(公告)日：2014-04-17
申请号：US13653001
申请日：2012-10-16
申请人： Venugopal Srinivasan , Alexander Topchy
发明人： Venugopal Srinivasan , Alexander Topchy
IPC分类号： G06K9/00
CPC分类号： G10L19/018
摘要： Methods and apparatus to perform audio watermark detection and extraction are disclosed. An example method includes sampling a media signal to generate samples, wherein the media signal includes an embedded message, determining a first symbol value for a first block of the samples, determining a second symbol value for a second block of the samples, and determining, using a processor, a resulting symbol value, representative of a part of the embedded message, based on the first symbol value and the second symbol value for the first block of samples and the second block of samples, wherein the first block and the second block partially overlap.
摘要翻译：公开了执行音频水印检测和提取的方法和装置。示例性方法包括对媒体信号进行采样以生成样本，其中媒体信号包括嵌入消息，确定样本的第一块的第一符号值，确定样本的第二块的第二符号值，基于所述第一采样块和所述第二采样块的所述第一符号值和所述第二符号值，使用处理器生成代表所述嵌入式消息的一部分的结果符号值，其中所述第一块和所述第二块部分重叠。

12. 发明授权

US08457951B2 Methods and apparatus for performing variable black length watermarking of media 有权
标题翻译：用于执行媒体可变块长度水印的方法和装置
公开(公告)号：US08457951B2
公开(公告)日：2013-06-04
申请号：US12361991
申请日：2009-01-29
申请人： Venugopal Srinivasan , Alexander Topchy
发明人： Venugopal Srinivasan , Alexander Topchy
IPC分类号： G10L11/04 , G10L21/00
CPC分类号： G10L19/018
摘要： Methods, apparatus, and articles of manufacture are disclosed in which auxiliary information is added to or removed from an audio signal. In one example, the information may be added to the audio signal using at least two frequencies that are dictated by two different frequency transformation block sizes, such that the two frequencies are not fully visible when an incorrect block size is used to perform a frequency transformation. Additionally, in another example, a decoder may compensate for time and frequency affects caused by removing old samples and adding new samples, which, in one example, alleviates the need to perform repeated frequency transformation using different frequency transformation block sizes. Other examples are described.
摘要翻译：公开了将辅助信息添加到音频信号或从音频信号中移除的方法，装置和制品。在一个示例中，可以使用由两个不同的频率变换块大小指定的至少两个频率将信息添加到音频信号，使得当使用不正确的块大小来执行频率变换时，两个频率不完全可见。此外，在另一个示例中，解码器可以补偿由去除旧样本和添加新样本引起的时间和频率影响，在一个示例中，这样减少了使用不同频率变换块大小进行重复频率变换的需要。描述其他示例。

13. 发明申请

US20130013324A1 METHODS AND APPARATUS FOR CHARACTERIZING MEDIA 有权
标题翻译：表征媒体的方法和装置
公开(公告)号：US20130013324A1
公开(公告)日：2013-01-10
申请号：US13619023
申请日：2012-09-14
申请人： Alexander Topchy , Venugopal Srinivasan , Arun Ramaswamy
发明人： Alexander Topchy , Venugopal Srinivasan , Arun Ramaswamy
IPC分类号： G10L19/00
CPC分类号： H04H60/58 , H04H20/14
摘要： Methods and apparatus for characterizing media are described. A disclosed example apparatus includes a transformer, a decision metric processor, a signature determiner, and a processor to implement the transformer, the decision metric processor, and/or the signature determiner. The example transformer is to convert at least a portion of a block of audio into a frequency domain representation including a plurality of frequency components. The example decision metric processor is to: define a band of the frequency components; determine a difference in energy between a first convolution of a first complex vector with a first group of frequency bins in the band and a second convolution of a second complex vector with a second group of frequency bins in the band; and determine a decision metric for the band based on the difference. The example signature determiner is to determine a signature based on a value of the decision metric.
摘要翻译：描述用于表征介质的方法和装置。所公开的示例性设备包括变压器，决策度量处理器，签名确定器和用于实现变压器的处理器，决策度量处理器和/或签名确定器。示例性变压器是将音频块的至少一部分转换为包括多个频率分量的频域表示。示例决策度量处理器是：定义频率分量的频带; 确定第一复矢量与频带中的第一组频率仓的第一卷积之间的能量差和第二复矢量与频带中的第二组频率仓的第二卷积; 并且基于该差异来确定所述频带的决策度量。示例性签名确定器是基于决策度量的值来确定签名。

14. 发明申请

US20100106510A1 METHODS AND APPARATUS TO PERFORM AUDIO WATERMARKING AND WATERMARK DETECTION AND EXTRACTION 有权
标题翻译：执行音频水印和水印检测和提取的方法和设备
公开(公告)号：US20100106510A1
公开(公告)日：2010-04-29
申请号：US12551220
申请日：2009-08-31
申请人： Alexander Topchy , Venugopal Srinivasan
发明人： Alexander Topchy , Venugopal Srinivasan
IPC分类号： G10L19/00 , G10L11/00
CPC分类号： G06F17/30743 , G11B20/10 , H04H20/31 , H04H60/37 , H04H60/58 , H04H2201/50
摘要： Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. An example method includes receiving a media content signal, sampling the media content signal to generate samples, storing the samples in a buffer, determining a first sequence of samples in the buffer, determining a second sequence of samples in the buffer, wherein the second sequence of samples is of substantially equal length as the first sequence of samples, calculating an average of the first sequence of samples and the second sequence of samples to generate an average sequence of samples, extracting an identifier from the average sequence of samples, and storing the identifier in a tangible memory.
摘要翻译：本文描述了音频水印和水印检测和提取的方法和装置。示例性方法包括：接收媒体内容信号，对媒体内容信号进行采样以产生样本，将样本存储在缓冲器中，确定缓冲器中的第一采样序列，确定缓冲器中的第二采样序列，其中第二序列的样本具有与第一样本序列基本相同的长度，计算第一样本序列的平均值和第二样本序列以生成平均样本序列，从平均样本序列中提取标识符，并存储标识符在有形存储器中。

15. 发明授权

US09093064B2 Down-mixing compensation for audio watermarking 有权
标题翻译：音频水印下混音补偿
公开(公告)号：US09093064B2
公开(公告)日：2015-07-28
申请号：US13793962
申请日：2013-03-11
申请人： Venugopal Srinivasan , Alexander Topchy
发明人： Venugopal Srinivasan , Alexander Topchy
IPC分类号： G10L19/018 , G10L19/008
CPC分类号： G10L19/018 , G10L19/008
摘要： Example methods, apparatus, systems and articles of manufacture to implement down-mixing compensation for audio watermarking are disclosed. Example methods disclosed herein to compensate for audio channel down-mixing when embedding watermarks in a multichannel audio signal include obtaining a watermark to be embedded in respective ones of a plurality of audio channels of the multichannel audio signal. Such example methods also include embedding the watermark in a first one of the plurality of audio channels based on a compensation factor that is to reduce perceptibility of the watermark when the first one of the plurality of audio channels is down-mixed with a second one of the plurality of audio channels after the watermark has been applied to the first and second ones of the plurality of audio channels.
摘要翻译：公开了用于实现音频水印的下混补偿的示例性方法，装置，系统和制品。当将水印嵌入多声道音频信号中时，本文公开的用于补偿音频通道下混的示例方法包括获得要嵌入在多声道音频信号的多个音频通道的相应的一个中的水印。这种示例性方法还包括：基于当多个音频通道中的第一个音频通道与第一个音频通道中的第二个被混合时降低水印的可感知性的补偿因子，将该水印嵌入多个音频通道的第一个中水印之后的多个音频通道已被应用于多个音频通道中的第一和第二音频通道。

16. 发明申请

US20130268279A1 METHODS AND APPARATUS FOR PERFORMING VARIABLE BLOCK LENGTH WATERMARKING OF MEDIA 有权
标题翻译：用于执行变化块长度水印的方法和装置
公开(公告)号：US20130268279A1
公开(公告)日：2013-10-10
申请号：US13907286
申请日：2013-05-31
申请人： Venugopal Srinivasan , Alexander Topchy
发明人： Venugopal Srinivasan , Alexander Topchy
IPC分类号： G10L19/018
CPC分类号： G10L19/018
摘要： Methods and apparatus for performing variable block length watermarking of media are disclosed. An example method to encode auxiliary data in audio data comprises selecting a frequency based on a code, selecting a block size based on the code, a combination of the block size and the frequency to represent of the code, encoding the code in an audio stream according to the block size and the frequency, and transmitting the audio stream including the encoded code.
摘要翻译：公开了用于执行媒体的可变块长度水印的方法和装置。用于对音频数据中的辅助数据进行编码的示例性方法包括：基于代码选择频率，基于代码选择块大小，块大小和频率的组合来表示代码，对音频流中的代码进行编码根据块大小和频率，并发送包括编码的音频流。

17. 发明授权

US08458737B2 Methods and apparatus for generating signatures 有权
标题翻译：生成签名的方法和装置
公开(公告)号：US08458737B2
公开(公告)日：2013-06-04
申请号：US12110951
申请日：2008-04-28
申请人： Alexander Topchy , Venugopal Srinivasan
发明人： Alexander Topchy , Venugopal Srinivasan
IPC分类号： H04H60/32
CPC分类号： H04H60/58 , G06F17/30743 , H04H20/14 , H04H2201/90
摘要： Methods and apparatus for characterizing media are described. In one example, a method of characterizing media includes capturing a block of audio; converting at least a portion of the block of audio into a frequency domain representation; dividing the frequency domain representation into a plurality of bands; determining a characteristic difference of a first band of the plurality of bands based on a comparison of a characteristic of the first band and a characteristic of a second band different from the first band, wherein the characteristic of the first band occurs at a time that is different than a time at which the characteristic of the second band takes place; and determining a signature bit based on a characteristic difference. Other examples are shown and described.
摘要翻译：描述用于表征介质的方法和装置。在一个示例中，表征媒体的方法包括捕获音频块; 将音频块的至少一部分转换成频域表示; 将频域表示划分成多个频带; 基于所述第一频带的特性与不同于所述第一频带的第二频带的特性的比较，确定所述多个频带中的第一频带的特征差，其中，所述第一频带的特性在与第二频带的特征发生的时间不同; 以及基于特征差确定签名比特。示出和描述其他示例。

18. 发明申请

US20090192805A1 METHODS AND APPARATUS FOR PERFORMING VARIABLE BLACK LENGTH WATERMARKING OF MEDIA 有权
标题翻译：用于执行变化块长度水印的方法和装置
公开(公告)号：US20090192805A1
公开(公告)日：2009-07-30
申请号：US12361991
申请日：2009-01-29
申请人： Alexander Topchy , Venugopal Srinivasan
发明人： Alexander Topchy , Venugopal Srinivasan
IPC分类号： G10L19/00
CPC分类号： G10L19/018
摘要： Methods, apparatus, and articles of manufacture are disclosed in which auxiliary information is added to or removed from an audio signal. In one example, the information may be added to the audio signal using at least two frequencies that are dictated by two different frequency transformation block sizes, such that the two frequencies are not fully visible when an incorrect block size is used to perform a frequency transformation. Additionally, in another example, a decoder may compensate for time and frequency affects caused by removing old samples and adding new samples, which, in one example, alleviates the need to perform repeated frequency transformation using different frequency transformation block sizes. Other examples are described.
摘要翻译：公开了将辅助信息添加到音频信号或从音频信号中移除的方法，装置和制品。在一个示例中，可以使用由两个不同的频率变换块大小指定的至少两个频率将信息添加到音频信号，使得当使用不正确的块大小来执行频率变换时，两个频率不完全可见。此外，在另一个示例中，解码器可以补偿由去除旧样本和添加新样本引起的时间和频率影响，在一个示例中，这样减少了使用不同频率变换块大小进行重复频率变换的需要。描述其他示例。

19. 发明申请

US20140343703A1 DETECTING MEDIA WATERMARKS IN MAGNETIC FIELD DATA 有权
标题翻译：检测磁场数据中的媒体水印
公开(公告)号：US20140343703A1
公开(公告)日：2014-11-20
申请号：US14133069
申请日：2013-12-18
申请人： Alexander Topchy , Venugopal Srinivasan
发明人： Alexander Topchy , Venugopal Srinivasan
IPC分类号： G06F17/30
CPC分类号： G06F17/30743 , G10L19/018 , G11B20/00086
摘要： Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to detect media watermarks in magnetic field data are disclosed herein. Example methods disclosed herein to detect media watermarks can include accessing multidimensional magnetic field data representative of values of a magnetic field measured within a first distance of audio circuitry that is to output an audio signal corresponding to media presented by a media device. Such example methods can also include processing the multidimensional magnetic field data to detect a watermark included in the audio signal.
摘要翻译：本文公开了在磁场数据中检测媒体水印的方法，装置，系统和制品（例如，物理存储介质）。本文公开的用于检测媒体水印的示例方法可以包括访问表示在音频电路的第一距离内测量的磁场的值的多维磁场数据，所述磁场值将输出对应于由媒体设备呈现的媒体的音频信号。这种示例性方法还可以包括处理多维磁场数据以检测包括在音频信号中的水印。

20. 发明申请

US20130096706A1 Methods and Apparatus to Perform Audio Watermarking and Watermark Detection and Extraction 审中-公开
标题翻译：执行音频水印和水印检测和提取的方法和设备
公开(公告)号：US20130096706A1
公开(公告)日：2013-04-18
申请号：US13708578
申请日：2012-12-07
申请人： Venugopal Srinivasan , Alexander Topchy
发明人： Venugopal Srinivasan , Alexander Topchy
IPC分类号： G06F17/30
CPC分类号： G06F16/683 , G11B20/10 , H04H20/31 , H04H60/37 , H04H60/58 , H04H2201/50
摘要： Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. An example method includes receiving a media content signal, sampling the media content signal to generate samples, storing the samples in a buffer, determining a first sequence of samples in the buffer, determining a second sequence of samples in the buffer, wherein the second sequence of samples is of substantially equal length as the first sequence of samples, calculating an average of the first sequence of samples and the second sequence of samples to generate an average sequence of samples, extracting an identifier from the average sequence of samples, and storing the identifier in a tangible memory.
摘要翻译：本文描述了音频水印和水印检测和提取的方法和装置。示例性方法包括：接收媒体内容信号，对媒体内容信号进行采样以产生样本，将样本存储在缓冲器中，确定缓冲器中的第一采样序列，确定缓冲器中的第二采样序列，其中第二序列的样本具有与第一样本序列基本相同的长度，计算第一样本序列的平均值和第二样本序列以生成平均样本序列，从平均样本序列中提取标识符，并存储标识符在有形存储器中。

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