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公开(公告)号：US07512539B2
公开(公告)日：2009-03-31
申请号：US10479398
申请日：2002-05-28
CPC分类号： G10L19/0212 , G06F17/147
摘要： An integer transform, which provides integer output values, carries out the TDAC function of a MDCT in the time domain before the forward transform. In overlapping windows, this results in a Givens rotation which may be represented by lifting matrices, wherein time-discrete sampled values of an audio signal may at first be summed up on a pair-wise basis to build a vector so as to be sequentially provided with a lifting matrix. After each multiplication of a vector by a lifting matrix, a rounding step is carried out such that, on the output-side, only integers will result. By transforming the windowed integer sampled value with an integer transform, a spectral representation with integer spectral values may be obtained. The inverse mapping with an inverse rotation matrix and corresponding inverse lifting matrices results in an exact reconstruction.
摘要翻译： 提供整数输出值的整数变换在正向变换之前的时域中执行MDCT的TDAC功能。 在重叠窗口中，这导致Givens旋转，其可以由提升矩阵表示，其中音频信号的时间离散采样值可以首先在成对的基础上相加以构建向量以便顺序地提供 与提升矩阵。 在通过提升矩阵对向量进行每次乘法之后，执行舍入步骤，使得在输出侧仅将导致整数。 通过用整数变换变换窗口整数采样值，可以获得具有整数频谱值的频谱表示。 具有逆旋转矩阵和对应的反提升矩阵的逆映射导致精确重建。
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公开(公告)号：US07035742B2
公开(公告)日：2006-04-25
申请号：US10950309
申请日：2004-09-23
IPC分类号： G06F19/00
CPC分类号： G10H3/125 , G10H2240/135 , G10L15/02 , G10L15/10
摘要： For characterizing an information signal having an amplitude-time waveform with local extreme values, at first the local extreme values of the information signal are determined, wherein a local extreme value is defined by a time instant and an amplitude. Furthermore, area information of valleys or mountains of the information signal in case of a one-dimensional amplitude of the information signal or volume information in case of a two-dimensional amplitude of the information signal of valleys or mountains is ascertained. A valley or mountain is defined by a temporal section of the information signal, wherein the section of the information signal extends from the time instant of a local extreme value to a temporarily adjacent value of the information signal having the same amplitude as the local extreme value. Area or volume information of several mountains or valleys is characteristic for the information signal and permits further characterization of the information signal, build-up of an information signal database, or identification of an information signal on the basis of an existing information signal database. Area or volume information is on the one hand characteristic for the information signal and on the other hand, due to its integral nature, robust against information signal changes in form of overlays or distortions.
摘要翻译： 为了表征具有局部极值的幅度 - 时间波形的信息信号，首先确定信息信号的局部极值，其中局部极值由时刻和幅度定义。 此外，确定在谷或山信息信号的二维幅度的情况下，在信息信号的一维幅度或体积信息的情况下信息信号的谷或山的区域信息。 谷或山由信息信号的时间段定义，其中信息信号的部分从本地极值的时刻延伸到具有与局部极值相同幅度的信息信号的临时相邻值 。 几个山脉或山谷的区域或体积信息是信息信号的特征，并且允许信息信号的进一步表征，信息信号数据库的建立或基于现有信息信号数据库的信息信号的识别。 区域或体积信息一方面是信息信号的特征，另一方面，由于其整体性质，对叠加或变形形式的信息信号变化是鲁棒的。
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3.发明申请Device and method for generating encrypted data, for decrypting encrypted data and for generating re-signed data 审中-公开用于生成加密数据的装置和方法，用于解密加密数据和生成重新签名的数据公开(公告)号：US20050135613A1
公开(公告)日：2005-06-23
申请号：US10985479
申请日：2004-11-10
申请人： Karlheinz Brandenburg , Christian Neubauer , Ralph Kulessa , Frank Siebenharr , Wolfgang Spinnler
发明人： Karlheinz Brandenburg , Christian Neubauer , Ralph Kulessa , Frank Siebenharr , Wolfgang Spinnler
CPC分类号： G06F21/10 , G06F2221/0737 , G06F2221/2107
摘要： Devices and methods for generating encrypted data, for playing encrypted data and for re-signing originally signed encrypted data are based on the encrypted data, apart from the encrypted media information, to include the information required for decrypting the data and additionally a signature of who has generated the encrypted data. Thus the origin of the encrypted data can be traced back. In particular, passing on the encrypted data to a limited extent by the producer of the *encrypted data, for example to friends or acquaintances, is allowed, while only a mass reproduction of the encrypted data is considered as pirate copying. The pirate copier can, however, be found out with the help of the signature, wherein the signature is optionally protected by an embedded watermark signature. Because this is a concept wherein, when being used legally, only encrypted data occur, the unauthorized removal of the encryption is a statutory offence. The inventive concept makes possible finding the offender and at the same time considers ownerships of the operators with regard to a limited passing-on of media information, and thus has the potential of being accepted on the market.
摘要翻译： 用于生成加密数据，用于播放加密数据和重新签署原始签名的加密数据的装置和方法基于加密数据，除了加密的媒体信息之外，还包括解密数据所需的信息，另外还包括谁的签名 已生成加密数据。 因此，可以追溯加密数据的来源。 特别地，允许由加密数据的制作者（例如，朋友或熟人）在有限程度上传递加密数据，而仅将加密数据的大规模再现视为盗版复制。 然而，在签名的帮助下，可以发现盗版复印机，其中签名可选地被嵌入的水印签名保护。 因为这是一个概念，其中当被合法使用时，仅发生加密的数据，未经授权的加密删除是法定的。 本发明的概念使得有可能发现犯罪者，同时考虑到运营商对媒体信息传递有限的所有权，因此具有被市场接受的潜力。
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公开(公告)号：US06370507B1
公开(公告)日：2002-04-09
申请号：US09319066
申请日：1999-05-28
IPC分类号： G10L1902
CPC分类号： G10L19/24 , G10L19/0204
摘要： In a method of coding discrete time signals (X1) sampled with a first sampling rate, second time signals (x2) are generated using the first time signals having a bandwidth corresponding to a second sampling rate, with the second sampling rate being lower than the first sampling rate. The second time signals are coded in accordance with a first coding algorithm. The coded second signals (X2c) are decoded again in order to obtain coded/decoded second time signals (X2cd) having a bandwidth corresponding to the second sampling frequency. The first time signals, by frequency domain transformation, become first spectral values (X1). Second spectral values (X2cd) are generated from the coded/decoded second time signals, the second spectral values being a representation of the coded/decoded time signals in the frequency domain. To obtain weighted spectral values, the first spectral values are weighted by means of the second spectral values, with the first and second spectral values having the same frequency and time resolution. The weighted spectral values (Xb) are coded in accordance with a second coding algorithm in consideration of a psychoacoustic model and written into a bit stream. Weighting the first spectral values and the second spectral values comprises the subtraction of the second spectral values from the first spectral values in to obtain differential spectral values.
摘要翻译： 在对以第一采样率采样的离散时间信号（X1）进行编码的方法中，使用具有对应于第二采样率的带宽的第一时间信号来生成第二时间信号（x2），其中第二采样率低于 第一次采样率。 第二时间信号根据第一编码算法进行编码。 再次对编码的第二信号（X2c）进行解码，以获得具有对应于第二采样频率的带宽的编码/解码的第二时间信号（X2cd）。 第一次通过频域变换的信号变为第一个光谱值（X1）。 从编码/解码的第二时间信号产生第二频谱值（X2cd），第二频谱值是频域中编码/解码的时间信号的表示。 为了获得加权光谱值，通过第二光谱值对第一光谱值进行加权，其中第一和第二光谱值具有相同的频率和时间分辨率。 考虑到心理声学模型并将其写入比特流，加权频谱值（Xb）根据第二编码算法进行编码。 加权第一光谱值和第二光谱值包括从第一光谱值减去第二光谱值以获得差分光谱值。
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公开(公告)号：US5014318A
公开(公告)日：1991-05-07
申请号：US439394
申请日：1989-10-25
申请人： Hartmut Schott , Dieter Seitzer , Heinz Gerhauser , Karlheinz Brandenburg , Ernst Eberlein , Stefan Krageloh , Rolf Kapust , Harald Popp
发明人： Hartmut Schott , Dieter Seitzer , Heinz Gerhauser , Karlheinz Brandenburg , Ernst Eberlein , Stefan Krageloh , Rolf Kapust , Harald Popp
摘要： Disclosed is an apparatus for checking audio signal processing systems. The apparatus has the following features:the apparatus is provided with a first input connection, to which the input signal of the audio processing system to be checked is transmitted, a second input connection, to which the output signal of said system is transmitted, and a signal processor.said signal processor ascertains the signal delay time of said system to be checked by means of correlating said signals received at said two input connections,said signal processor always composes the difference signal from said signal received at said first input connection during a specific time span and said signal received at said second input connection, lagging by the signal delay time,said signal processor ascertains the spectral composition of said signal received at said first input connection during said specific time span and of said respective difference signal,said signal processor ascertains the hearing threshold of the human ear from said spectral composition and compares the ascertained hearing threshold with the respective difference signal.
摘要翻译： PCT No.PCT / DE89 / 00110 Sec。 371日期：1989年10月25日 102（e）日期1989年10月25日PCT提交1989年2月25日PCT公布。 公开号WO89 / 08357 日期为1989年9月8日。公开是用于检查音频信号处理系统的装置。 该装置具有以下特征：该装置具有第一输入连接，待检查的音频处理系统的输入信号被发送到该第一输入连接，传输所述系统的输出信号的第二输入连接;以及 信号处理器。 所述信号处理器通过将在所述两个输入连接处接收到的所述信号相关来确定要检查的所述系统的信号延迟时间，所述信号处理器总是在特定时间跨度期间组合来自在所述第一输入连接处接收的所述信号的差信号， 所述信号在所述第二输入连接处被接收，滞后于所述信号延迟时间，所述信号处理器确定在所述特定时间跨度期间在所述第一输入连接处接收到的所述信号的频谱组成以及所述各个差分信号，所述信号处理器确定听觉 阈值，并将所确定的听力阈值与相应的差分信号进行比较。
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公开(公告)号：US07548630B2
公开(公告)日：2009-06-16
申请号：US10548667
申请日：2004-03-11
CPC分类号： H04R1/025 , H04R1/403 , H04R2201/021
摘要： A loudspeaker system including a plurality of sonic converters fixed in or to the rear of sound passage openings of a carrier plate is disclosed. The carrier plate is configured in the form of a wall plate for interior spaces or outside facades of buildings and the sonic converters are integrated into the carrier plate. The loudspeaker system or loudspeaker wall plate, respectively, permit the realization of an optimum acoustic irradiation of a space without aesthetically annoying loudspeaker boxes.
摘要翻译： 公开了一种扬声器系统，其包括固定在载板的声音通道开口中或后方的多个声转换器。 承载板被构造成用于建筑物的内部空间或外部正面的壁板的形式，并且声音转换器被集成到承载板中。 扬声器系统或扬声器墙板分别允许实现空间的最佳声辐射，而没有美观的扬声器盒。
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7.发明授权Method and device for generating an identifier for an audio signal, method and device for building an instrument database and method and device for determining the type of an instrument 有权用于生成音频信号的标识符的方法和装置，用于构建仪器数据库的方法和装置以及用于确定仪器类型的方法和装置公开(公告)号：US07214870B2
公开(公告)日：2007-05-08
申请号：US10496635
申请日：2002-11-21
IPC分类号： G10H7/00
CPC分类号： G10H1/00 , G10H2210/056 , G10H2240/145
摘要： In a method for generating an identifier for an audio signal including a tone generated by an instrument, a discrete amplitude-time representation of the audio signal is generated at first, wherein the amplitude-time representation, for a plurality of subsequent points in time, comprises a plurality of subsequent amplitude values, wherein a point in time is associated to each amplitude value. Subsequently, an identifier for the audio signal is extracted from the amplitude-time representation. An instrument database is formed from several identifiers for several audio signals including tones of several instruments. By means of a test identifier for an audio signal having been produced by an unknown instrument, the type of the test instrument is determined using the instrument database. A precise instrument identification can be obtained by using the amplitude-time representation of a tone produced by an instrument for identifying a musical instrument.
摘要翻译： 在用于产生包括由乐器产生的乐音的音频信号的标识符的方法中，首先产生音频信号的离散幅度 - 时间表示，其中对于多个随后的时间点的幅度 - 时间表示， 包括多个随后的幅度值，其中时间点与每个振幅值相关联。 随后，从振幅 - 时间表示中提取音频信号的标识符。 仪器数据库由若干音频信号的几个标识符形成，包括若干乐器的音调。 通过由未知仪器产生的音频信号的测试标识符，使用仪器数据库确定测试仪器的类型。 可以通过使用用于识别乐器的乐器产生的音调的振幅 - 时间表示来获得精确的乐器识别。
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公开(公告)号：US20050038635A1
公开(公告)日：2005-02-17
申请号：US10950309
申请日：2004-09-23
CPC分类号： G10H3/125 , G10H2240/135 , G10L15/02 , G10L15/10
摘要： For characterizing an information signal having an amplitude-time waveform with local extreme values, at first the local extreme values of the information signal are determined, wherein a local extreme value is defined by a time instant and an amplitude. Furthermore, area information of valleys or mountains of the information signal in case of a one-dimensional amplitude of the information signal or volume information in case of a two-dimensional amplitude of the information signal of valleys or mountains is ascertained. A valley or mountain is defined by a temporal section of the information signal, wherein the section of the information signal extends from the time instant of a local extreme value to a temporarily adjacent value of the information signal having the same amplitude as the local extreme value. Area or volume information of several mountains or valleys is characteristic for the information signal and permits further characterization of the information signal, build-up of an information signal database, or identification of an information signal on the basis of an existing information signal database. Area or volume information is on the one hand characteristic for the information signal and on the other hand, due to its integral nature, robust against information signal changes in form of overlays or distortions.
摘要翻译： 为了表征具有局部极值的幅度 - 时间波形的信息信号，首先确定信息信号的局部极值，其中局部极值由时刻和幅度定义。 此外，确定在谷或山信息信号的二维幅度的情况下，在信息信号的一维幅度或体积信息的情况下信息信号的谷或山的区域信息。 谷或山由信息信号的时间段定义，其中信息信号的部分从本地极值的时刻延伸到具有与局部极值相同幅度的信息信号的临时相邻值 。 几个山脉或山谷的区域或体积信息是信息信号的特征，并且允许信息信号的进一步表征，信息信号数据库的建立或基于现有信息信号数据库的信息信号的识别。 区域或体积信息一方面是信息信号的特征，另一方面，由于其整体性质，对叠加或变形形式的信息信号变化是鲁棒的。
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9.发明授权公开(公告)号：US06766293B1
公开(公告)日：2004-07-20
申请号：US09367775
申请日：1999-08-18
申请人： Jürgen Herre , Uwe Gbur , Andreas Ehret , Martin Dietz , Bodo Teichmann , Oliver Kunz , Karlheinz Brandenburg , Heinz Gerhäuser
发明人： Jürgen Herre , Uwe Gbur , Andreas Ehret , Martin Dietz , Bodo Teichmann , Oliver Kunz , Karlheinz Brandenburg , Heinz Gerhäuser
IPC分类号： G10L2102
CPC分类号： G10L19/028 , H04B1/665
摘要： In a method for signalling a noise substitution when coding an audio signal, the time-domain audio signal is first transformed into the frequency domain to obtain spectral values. The spectral values are subsequently grouped together to form groups of spectral values. On the basis of a detection establishing whether a group of spectral values is a noisy group or not, a codebook is allocated to a non-noisy or tonal group by means of a codebook number for redundancy coding of the same. If a group is noisy, an additional codebook number which does not refer to a codebook is allocated to it in order to signal that this group is noisy and therefore does not have to be redundancy coded. By signalling noise substitution by means of a Huffman codebook number for noisy groups of spectral values, which are e.g. sections made up of scale factor bands which do not have to be redundancy coded, an opportunity is provided to indicate the presence of a noise substitution in a scale factor band in the bit stream syntax of the MPEG-2 Advanced Audio Coding (AAC) Standard without having to interfere with the basic coding structure and without having to meddle with the structure of the existing bit stream syntax.
摘要翻译： 在对音频信号编码时用于发信号通知的方法中，首先将时域音频信号变换成频域以获得频谱值。 光谱值随后被分组在一起以形成光谱值组。 基于确定一组频谱值是否为噪声组的检测，通过用于冗余编码的码本号将码本分配给非噪声或色调组。 如果组噪声，则分配不附加码本的附加码本号，以便发信号通知该组噪声，因此不必进行冗余编码。 通过用于噪声组的频谱值的霍夫曼码本号对信号进行信号替换， 由不必冗余编码的比例因子带组成的部分提供了一种机会，以指示在MPEG-2高级音频编码（AAC）标准的比特流语法中的比例因子频带中存在噪声替换 而不必干扰基本编码结构，而不必介入现有比特流语法的结构。
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公开(公告)号：US6115688A
公开(公告)日：2000-09-05
申请号：US51347
申请日：1998-07-01
CPC分类号： H04B1/665
摘要： In coding of an audio signal, coded signals with low quality and bit rate on the one hand and coded signals with high quality and bit rate on the other hand are transmitted to a decoder. At first, the audio signal is coded with low bit rate and is transmitted to the decoder before an additional coded signal is transmitted to the decoder, which either alone or together with the first coded signal upon decoding thereof provides a decoded signal with high quality within the decoder. In this manner, a low-quality decoded signal is generated first in the decoder before decoding of the high-quality signal is possible.
摘要翻译： PCT No.PCT / EP96 / 03609 Sec。 371日期：1998年7月1日 102（e）1998年7月1日PCT PCT 1996年8月16日PCT公布。 公开号WO97 / 14229 日期1997年04月17日在编码音频信号时，一方面具有低质量和比特率的编码信号和另一方面具有高质量和比特率的编码信号被传送到解码器。 首先，以低比特率对音频信号进行编码，并且在将附加的编码信号发送到解码器之前被传送到解码器，解码器单独或与解码时的第一编码信号一起提供高质量的解码信号 解码器。 以这种方式，在对高质量信号进行解码之前，首先在解码器中产生低质量的解码信号。
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