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    • 1. 发明授权
    • Method for converting a music signal into a note-based description and for referencing a music signal in a data bank
    • 用于将音乐信号转换为基于音符的描述并用于参考数据库中的音乐信号的方法
    • US07064262B2
    • 2006-06-20
    • US10473462
    • 2002-04-04
    • Frank KlefenzKarlheinz BrandenburgMatthias Kaufmann
    • Frank KlefenzKarlheinz BrandenburgMatthias Kaufmann
    • G10H7/00
    • G10H1/0041
    • In a method for transferring a music signal into a note-based description, a frequency-time representation of the music signal is first generated, the frequency-time representation comprising coordinate tuples, a coordinate tuple including a frequency value and a time value, the time value indicating the time of occurrence of the assigned frequency in the music signal. Thereupon, a fit function will be calculated as a function of the time, the course of which is determined by the coordinate tuples of the frequency-time representation. For time-segmenting the frequency-time representation, at least two adjacent extreme values of the fit function will be determined. On the basis of the determined extreme values, a segmenting will be carried out, a segment being limited by two adjacent extreme values of the fit function, the time length of the segments indicating a time length of a note for the segment. For pitch determination, a pitch for the segment using coordinate tuples in the segment will be determined. For calculating the fit function and determining extreme values of the fit function for segmenting, no requirements are made to the music signal which is to be transferred into a note-based representation. The method is thus also suitable for continuous music signals.
    • 在将音乐信号转换为基于音符的描述的方法中,首先生成音乐信号的频率 - 时间表示,包括坐标元组的频率 - 时间表示,包括频率值和时间值的坐标元组, 指示音乐信号中分配频率发生的时间的时间值。 因此,拟合函数将被计算为时间的函数,其时间由频率 - 时间表示的坐标元组决定。 为了对频率 - 时间表示进行时间分割,将确定拟合函数的至少两个相邻极值。 基于所确定的极值,将执行分段,段被拟合函数的两个相邻极值限制,段的时间长度指示段的音符的时间长度。 对于音调确定,将确定段中使用坐标元组的段的音高。 为了计算拟合函数并确定用于分割的拟合函数的极值,对要转移到基于笔记的表示中的音乐信号没有要求。 因此,该方法也适用于连续的音乐信号。
    • 2. 发明授权
    • Apparatus and method for characterizing an information signal
    • 用于表征信息信号的装置和方法
    • US07035742B2
    • 2006-04-25
    • US10950309
    • 2004-09-23
    • Frank KlefenzKarlheinz Brandenburg
    • Frank KlefenzKarlheinz Brandenburg
    • G06F19/00
    • G10H3/125G10H2240/135G10L15/02G10L15/10
    • 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.
    • 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。
    • 3. 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
    • 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
    • US07214870B2
    • 2007-05-08
    • US10496635
    • 2002-11-21
    • Frank KlefenzKarlheinz Brandenburg
    • Frank KlefenzKarlheinz Brandenburg
    • G10H7/00
    • G10H1/00G10H2210/056G10H2240/145
    • 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.
    • 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。
    • 4. 发明申请
    • Apparatus and method for characterizing an information signal
    • 用于表征信息信号的装置和方法
    • US20050038635A1
    • 2005-02-17
    • US10950309
    • 2004-09-23
    • Frank KlefenzKarlheinz Brandenburg
    • Frank KlefenzKarlheinz Brandenburg
    • G10H3/12G10L15/02G10L15/10H03F1/26
    • G10H3/125G10H2240/135G10L15/02G10L15/10
    • 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.
    • 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。
    • 5. 发明申请
    • ARRAY ANTENNA
    • 阵风天线
    • US20130321229A1
    • 2013-12-05
    • US14000308
    • 2012-02-07
    • Frank KlefenzUlf Huegel
    • Frank KlefenzUlf Huegel
    • H01Q13/10
    • H01Q13/10H01Q21/0087H01Q21/064
    • The invention relates to an array antenna (1), comprising a first plate (2), which has means for distributing an electromagnetic signal to be emitted by the array antenna (1), a second plate (3), which has first openings (7) for conducting the electromagnetic signal to be emitted therethrough, and a third plate (4), which has means (12) used to emit the electromagnetic signal. The second plate (3) is arranged between the first plate and the third plate (2, 4) and is operatively connected to same. The second plate (3) has substantially plane-parallel, smooth lateral surfaces (5, 6), in which the first openings (7) are arranged.
    • 本发明涉及一种阵列天线(1),包括第一板(2),其具有用于分配由阵列天线(1)发射的电磁信号的装置;第二板(3),其具有第一开口 7),以及具有用于发射电磁信号的装置(12)的第三板(4)。 第二板(3)布置在第一板和第三板(2,4)之间,并且可操作地连接到第二板。 第二板(3)具有大致平行平行的光滑的侧表面(5,6),其中布置有第一开口(7)。
    • 7. 发明授权
    • Method and apparatus for determining transit-time differentials for signal waveforms for real-time pattern recognition, localization and monitoring of optical and acoustic signals
    • 用于确定用于实时模式识别,定位和监视光信号的信号波形的传播时间差的方法和装置
    • US06442510B1
    • 2002-08-27
    • US09530956
    • 2000-06-02
    • Frank Klefenz
    • Frank Klefenz
    • G06F1700
    • G01H5/00G01H3/00G01V1/001
    • A method includes the steps of segment-wise detecting and bringing into coincidence signal waveforms for conversion into monotone and continuous trajectories for real-time pattern recognition, localization, and monitoring optical and acoustic signals. The method also determines transit-time differentials, wherein pre-programmed key signals are detected by signal sampling, data is correlated from the sampled signals, and pairs of signal combinations of given signal transit-time differentials from the coincidence of the detected signals are determined. The apparatus includes at least two receivers for generating sequences of digital values from incoming acoustic signals, vector generators to convert the digital values into input vectors (7), a signal detection unit (C1) downstream from each vector generator and having parallel, programmable signal-flow chains and adder/comparator units (1, 10) mounted perpendicularly to the signal-flow chains at equidistant spacings, and a multi-coincidence unit (C2) consisting of two antiparallel shift-register forming flipflop chains and an AND gate (20).
    • 一种方法包括以下步骤:分段检测并使信号波形转换为用于实时模式识别,定位和监视光学和声学信号的单调和连续轨迹。 该方法还确定通过时间差,其中通过信号采样检测预编程的键信号,数据从采样信号相关,并且确定来自检测信号的一致的给定信号传播时间差的信号组合对 。 该设备包括至少两个用于从输入声信号产生数字值序列的接收器,用于将数字值转换为输入向量(7)的矢量发生器,每个矢量发生器下游的信号检测单元(C1),并具有并行的可编程信号 - 以等间隔垂直于信号流链安装的流量链和加法器/比较器单元(1,10)以及由两个反并联移位寄存器形成的触发器链和与门(20)组成的多重符合单元(C2) )。
    • 9. 发明授权
    • Device, method and computer program for analyzing an audio signal
    • 用于分析音频信号的装置,方法和计算机程序
    • US08761893B2
    • 2014-06-24
    • US11994170
    • 2006-05-10
    • Frank KlefenzAndrás KátaiGero SzepannekTamás Harczos
    • Frank KlefenzAndrás KátaiGero SzepannekTamás Harczos
    • A61N1/05A61N1/36H04R25/00
    • A61N1/36032A61B5/121A61B5/4023A61B5/415A61N1/36036G10L25/48H04R25/505H04R2225/43
    • A device for analyzing an audio signal to obtain an analysis representation of the audio signal includes a converter for converting the audio signal into a representation representing a neurotransmitter vesicle occurrence in clefts between a plurality of nerve fibers and inner auditory cells of an ear model, and a calculator for calculating a neural activity pattern over time on the plurality of nerve fibers, which results based on the neurotransmitter vesicle occurrence, wherein the neural activity pattern is an analysis representation of the audio signal. The inventive device thus generates an especially suitable analysis representation of an audio signal in which masking effects occurring in the generation of action potentials on nerve fibers are considered. The inventive analysis representation is also suitable for an examination of the audio content and also for controlling cochlea implants.
    • 用于分析音频信号以获得音频信号的分析表示的装置包括:转换器,用于将音频信号转换成代表在多个神经纤维和耳朵模型的内部听觉细胞之间的裂缝中的神经递质囊泡发生的表示;以及 用于基于神经递质囊泡出现而在多个神经纤维上计算随时间推移的神经活动模式的计算器,其中神经活动模式是音频信号的分析表示。 因此,本发明的装置产生音频信号的特别合适的分析表示,其中考虑在神经纤维上的动作电位的产生中发生的掩蔽效应。 本发明的分析表示也适用于音频内容的检查以及用于控制耳蜗植入物。