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公开(公告)号：US20050226426A1
公开(公告)日：2005-10-13
申请号：US10511806
申请日：2003-04-22
CPC分类号： G10L19/008 , G10L19/24 , H04S3/008 , H04S2420/03
摘要： Multi-channel audio signals are coded into a monaural audio signal and information allowing to recover the multi-channel audio signal from the monaural audio signal and the information. The information is generated by determining a first portion of the information for a first frequency region of the multi-channel audio signal, and by determining a second portion of the information for a second frequency region of the multi-channel audio signal. The second frequency region is a portion of the first frequency region and thus is a sub-range of the first frequency region. The information is multi-layered enabling a scaling of the decoding quality versus bit rate.
摘要翻译： 多声道音频信号被编码成单声道音频信号和允许从单声道音频信号和信息中恢复多声道音频信号的信息。 通过确定多声道音频信号的第一频率区域的信息的第一部分，以及通过确定多声道音频信号的第二频率区域的信息的第二部分来生成信息。 第二频率区域是第一频率区域的一部分，因此是第一频率区域的子范围。 该信息是多层次的，使得能够缩放解码质量与比特率。
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公开(公告)号：US20060147048A1
公开(公告)日：2006-07-06
申请号：US10545096
申请日：2004-02-09
申请人： Dirk Breebaart , Arnoldus Oomen
发明人： Dirk Breebaart , Arnoldus Oomen
CPC分类号： G10L19/008 , H04S1/007 , H04S2420/03
摘要： Parametric stereo coders use perceptually relevant parameters of the input signal to describe spatial properties. One of these parameters is the phase difference between the input signals (ITD or IPD). This time difference only determines the relative time difference between the input signals, without any information about how these time differences should be divided over the output signals in the decoder. An additional parameter is included in the encoded signal that describes how the ITD or IPD should be distributed between the output channels. To this goal the delay between a computed monaural signal and one of the input signals is used.
摘要翻译： 参数立体声编码器使用输入信号的感知相关参数来描述空间属性。 这些参数之一是输入信号（ITD或IPD）之间的相位差。 该时间差仅决定输入信号之间的相对时间差，没有关于如何在解码器中的输出信号上如何划分这些时间差的任何信息。 编码信号中包含一个额外的参数，描述ITD或IPD应如何分布在输出通道之间。 为此目的，使用计算的单声道信号和输入信号之一之间的延迟。
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公开(公告)号：US20050021326A1
公开(公告)日：2005-01-27
申请号：US10496710
申请日：2002-11-13
申请人： Erik Schuijers , Arnoldus Oomen
发明人： Erik Schuijers , Arnoldus Oomen
IPC分类号： G10L19/00 , G10L19/02 , G10L19/022 , G10L19/14 , H03M7/36
CPC分类号： G10L19/022
摘要： Coding a signal is provided, wherein a first set of values is provided related to subsequent times in a first time interval of the signal, a second set of values is provided related to subsequent times in a second time interval of the signal, the first time interval having an overlap with the second time interval, the overlap including at least two subsequent times of the second interval, wherein at least one of the values of the second set related to the at least two subsequent times in the overlap is encoded with reference to a value of the first set which is closer in time to the at least one value of the second set than any other value in the second set.
摘要翻译： 提供对信号进行编码，其中提供与信号的第一时间间隔中的后续时间相关的第一组值，在信号的第二时间间隔中提供与后续时间相关的第二组值，第一次 间隔与第二时间间隔重叠，重叠包括第二间隔的至少两个后续时间，其中与重叠中的至少两个后续时间相关的第二组的值中的至少一个参考 与第二组中的任何其他值相比，时间上比第二组的至少一个值更接近的第一组的值。
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公开(公告)号：US20050177360A1
公开(公告)日：2005-08-11
申请号：US10520872
申请日：2003-07-01
申请人： Erik Schuijers , Arnoldus Oomen
发明人： Erik Schuijers , Arnoldus Oomen
CPC分类号： G10L19/008 , H04S3/00 , H04S2420/03
摘要： In binaural stereo coding, only one monaural channel is encoded. An additional layer holds the parameters to retrieve the left and right signal. An encoder is disclosed which links transient information extracted from the mono encoded signal to parametric multi-channel layers to provide increased performance. Transient positions can either be directly derived from the bit-stream or be estimated from other encoded parameters (e.g. window-switching flag in mp3).
摘要翻译： 在双耳立体声编码中，只有一个单声道通道被编码。 附加层保存参数以检索左和右信号。 公开了一种编码器，其将从单声道编码信号提取的瞬态信息链接到参数多通道层，以提供更高的性能。 瞬态位置可以直接从比特流导出，也可以从其他编码参数（例如mp3中的窗口切换标志）估计。
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公开(公告)号：US20050021328A1
公开(公告)日：2005-01-27
申请号：US10495948
申请日：2002-11-22
IPC分类号： G10L19/012 , G11B20/24 , H03M7/30 , H04B1/66 , G10L19/00
CPC分类号： G10L19/012 , G11B20/24
摘要： A method using sources in a multi-channel audio coding system for encoding a set of audio signals wherein correlated components are present. The method comprises the step of determining, from the relation between said audio signals, a composition of said sources, the composition being such that the sources in said composition are substantially uncorrelated, so that said composition of sources synthesizes said components in a relation-preserved way. The method may further comprise the step of encoding the sources, by determining for each source a set of parameters for synthesizing said source and a set of transformation parameters for generating said composition of sources.
摘要翻译： 一种在多声道音频编码系统中使用源的方法，用于对存在相关分量的一组音频信号进行编码。 该方法包括从所述音频信号之间的关系确定所述源的组成的步骤，所述组成使得所述组合中的源基本上不相关，使得所述源的组合在合作关系中合成所述组件 办法。 该方法还可以包括通过为每个源确定用于合成所述源的一组参数以及用于生成所述源的组成的一组变换参数来对源进行编码的步骤。
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公开(公告)号：US20050004791A1
公开(公告)日：2005-01-06
申请号：US10495942
申请日：2002-11-04
IPC分类号： G10L19/012 , G11B20/24 , H03M7/30 , H04B1/66 , G10L19/00
CPC分类号： G10L19/012 , G11B20/24
摘要： A method using synthetic noise sources in a multi-channel audio coding system for encoding a set of audio signal wherein correlated noise components are present. The method comprises the step of determining, from the relation between said audio signals, a composition of noise sources, the composition being such that the noise sources in said composition are mutually uncorrelated, so that said composition of noise sources synthesizes said noise components in a relation-preserved way. The method may further comprise the step of encoding die noise sources, by determining for each noise source a set of noise parameters for synthesizing said source and a set of transformation parameters for generating said composition of noise sources.
摘要翻译： 一种在多声道音频编码系统中使用合成噪声源的方法，用于对存在相关噪声分量的一组音频信号进行编码。 该方法包括从所述音频信号之间的关系确定噪声源的组成的步骤，该组成使得所述组合中的噪声源彼此不相关，使得所述噪声源的组成将所述噪声分量合成在 关系保留的方式。 该方法还可以包括通过针对每个噪声源确定用于合成所述源的一组噪声参数和用于产生所述噪声源的组合的一组变换参数来对裸片噪声源进行编码的步骤。
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公开(公告)号：US20070076689A1
公开(公告)日：2007-04-05
申请号：US10576162
申请日：2004-10-11
申请人： Arnoldus Oomen , Fransiscus De Bont
发明人： Arnoldus Oomen , Fransiscus De Bont
IPC分类号： H04L12/66
CPC分类号： G11B27/105 , G11B27/3027
摘要： A data stream contains segments with reproducible signal data that has been encoded with a variable length encoding scheme. Each segment also contains first and second information about the length of the signal data in the segment, stored at predetermined relative positions with respect to the start and end of the signal data in the particular segment. During replay access locations are computed for accessing a next succeeding or preceding segment adjacent to a particular segment when a forward and backward direction of replay are selected respectively. The access location is computed from the first information from the particular segment or the second information from the adjacent segment that precedes the particular segment, dependent on whether the forward or backward direction is selected respectively.
摘要翻译： 数据流包含已经用可变长度编码方案编码的具有可再现信号数据的段。 每个段还包含关于段中的信号数据的长度的第一和第二信息，其存储在相对于特定段中的信号数据的开始和结束的预定相对位置处。 在重放期间，当分别选择重放的前进和后退方向时，计算访问位置以访问与特定段相邻的下一个后续或前一段。 取决于是否分别选择正向或反向方向，从特定段的第一信息或来自特定段之前的相邻段的第二信息计算接入位置。
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公开(公告)号：US20070003103A1
公开(公告)日：2007-01-04
申请号：US10596929
申请日：2005-01-13
申请人： Aweke Lemma , Leon Van De Kerkhof , Arnoldus Oomen
发明人： Aweke Lemma , Leon Van De Kerkhof , Arnoldus Oomen
CPC分类号： H04H20/31 , G11B20/00086 , G11B20/00884 , H04H60/14 , H04H2201/50 , H04H2201/90 , H04N21/2407 , H04N21/25875 , H04N21/44236 , H04N21/8352 , H04N21/8358
摘要： There is provided a method of allocating optimal payload space in a watermarking system. The method includes steps of: (a) obtaining identification parameters relating to programme data content (PC), said identification parameters including at least one or more user identifiers (UID) and one or 5 more programme content identifiers (CID); (b) storing said identification parameters (UID, CID) in one or more databases (30); (c) generating one or more transaction numbers (nTR) capable of being uniquely mapped to corresponding identification parameters (UID, CID) stored in the one or more 10 databases (30); and (d) generating watermark information for carrying said one or more transaction numbers (nTR) and embedding said watermark information as an optimized payload (OPL) into said programme data content (PC) to generate corresponding watermarked data content (WPC).
摘要翻译： 提供了一种在水印系统中分配最佳有效载荷空间的方法。 该方法包括以下步骤：（a）获得与节目数据内容（PC）相关的识别参数，所述标识参数包括至少一个或多个用户标识符（UID）和一个或多个节目内容标识符（CID）; （b）将所述识别参数（UID，CID）存储在一个或多个数据库（30）中; （c）生成能够被唯一映射到存储在所述一个或多个10数据库（30）中的相应标识参数（UID，CID）的一个或多个交易号码（nTR）。 以及（d）生成用于携带所述一个或多个交易号码（nTR）的水印信息，并将所述水印信息作为优化的有效载荷（OPL）嵌入到所述节目数据内容（PC）中以生成相应的水印数据内容（WPC）。
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公开(公告)号：US20060129389A1
公开(公告)日：2006-06-15
申请号：US11345993
申请日：2006-02-02
IPC分类号： G10L19/04
CPC分类号： G10L19/06 , G10L21/0208 , G10L25/12 , G10L25/18 , H03H17/0258
摘要： Modeling a target spectrum (S) is provided by determining (21) filter parameters (pi,qi) of a filter which has a frequency response approximating the target spectrum (S), wherein the target spectrum is split in at least a first part and a second part, a first modeling operation is used on the first part of the target spectrum to obtain auto-regressive parameters, a second modeling operation is used on the second part of the target spectrum to obtain moving-average parameters, and the auto-regressive parameters and the moving-average parameters are combined to obtain the filter parameters. The invention is preferably applied in audio coding, wherein a spectrum of a noise component (S) in the signal (A) is modeled.
摘要翻译： 通过确定具有近似于目标光谱的频率响应的滤波器的滤波器参数（21），来提供对目标频谱（S）的建模（ S），其中目标光谱在至少第一部分和第二部分中分裂，在目标光谱的第一部分上使用第一建模操作以获得自回归参数，在第二部分使用第二建模操作 获得移动平均参数的目标频谱的一部分，并且组合自回归参数和移动平均参数以获得滤波器参数。 本发明优选地应用于音频编码，其中对信号（A）中的噪声分量（S）的频谱进行建模。
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公开(公告)号：US20070061577A1
公开(公告)日：2007-03-15
申请号：US10575290
申请日：2004-10-01
IPC分类号： H04L9/00
CPC分类号： G10L19/018
摘要： The invention relates to a signal encoding system (100). A pre-encoder (103) encodes a signal and generates a pre-encoded signal. In addition the pre-encoder (103) generates encoding assistance data which is stored in a signal storage (105) together with the pre-encoded signal. When the signal is retrieved from the signal storage (105), it is decoded in a decoder (111) and a watermark is inserted in the decoded signal to generate a watermarked signal. The watermarked signal is then re-encoded, possibly at a different encoding rate, in a re-encoder (117). The re-encoder (117) is operable to re-encode the watermarked signal in response to the encoding assistance data. Thus, encoding assistance data may be generated at encoding prior to storage and the encoding assistance data may be used to facilitate re-encoding of a watermarked signal when retrieved. The invention is particular advantageous for applications wherein pre-encoding is performed once whereas re-encoding is frequently performed, such as for example a client-server music download application.
摘要翻译： 本发明涉及信号编码系统（100）。 预编码器（103）对信号进行编码并产生预编码信号。 此外，预编码器（103）生成与预编码信号一起存储在信号存储器（105）中的编码辅助数据。 当从信号存储器（105）检索信号时，在解码器（111）中对其进行解码，并且在解码信号中插入水印以产生加水印的信号。 然后，在重新编码器（117）中，可能以不同的编码速率对水印信号进行重新编码。 重编码器（117）可操作以响应于编码辅助数据对加水印的信号进行重新编码。 因此，可以在存储之前的编码时生成编码辅助数据，并且可以使用编码辅助数据来促进在检索时对水印信号的重新编码。 本发明对于其中执行预编码一次而频繁执行重新编码的应用是特别有利的，例如客户端 - 服务器音乐下载应用。
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