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21. 发明授权

US09734814B2 Active noise reduction 有权
公开(公告)号：US09734814B2
公开(公告)日：2017-08-15
申请号：US14671632
申请日：2015-03-27
申请人： Harman Becker Automotive Systems GmbH
发明人： Markus Christoph , Johann Freundorfer , Thomas Hommel
IPC分类号： G10K11/178 , H04R3/00
CPC分类号： G10K11/178 , G10K2210/1081 , G10K2210/3028 , H04R3/002 , H04R2410/05
摘要： A noise reducing sound reproduction system comprises a loudspeaker that is connected to a loudspeaker input path and that radiates noise reducing sound. A microphone is connected to a microphone output path and picks up the noise or a residual thereof. An active noise reduction filter is connected between the microphone output path and the loudspeaker input path, and the active noise reduction filter comprises at least one shelving filter.

22. 发明授权

US09729951B2 Loudspeaker overload protection 有权
公开(公告)号：US09729951B2
公开(公告)日：2017-08-08
申请号：US13774529
申请日：2013-02-22
申请人： Harman Becker Automotive Systems GmbH
发明人： Florian Wolf , Peter Perzlmaier , Leander Scholz , Markus Christoph , Georg Spielbauer
IPC分类号： H04R1/00 , H04R3/00
CPC分类号： H04R1/00 , H04R3/007
摘要： A loudspeaker overload protection circuit and method receives at a compressor a signal representing the estimated loudspeaker power consumption; receives at the compressor a signal representing the nominal power of the loudspeaker; receives at the compressor an input audio signal from the signal source and supplying with the compressor an output audio signal to the loudspeaker; estimates from the output audio signal, (a) signal(s) that represent(s) the voltage and/or current supplied to the loudspeaker and a parameter that represents the ohmic resistance of the loudspeaker the power consumed by the loudspeaker; supplies a signal representing the estimated loudspeaker power consumption to the compressor; and attenuates the input audio signal when the signal representing the estimated loudspeaker power consumption exceeds the signal representing the nominal power of the loudspeaker.

23. 发明授权

US09338554B2 Sound system for establishing a sound zone 有权
标题翻译：用于建立声音区的声音系统
公开(公告)号：US09338554B2
公开(公告)日：2016-05-10
申请号：US14281325
申请日：2014-05-19
申请人： Harman Becker Automotive Systems GmbH
发明人： Markus Christoph
IPC分类号： H04R5/00 , H04S7/00 , H04S1/00 , H04S3/00
CPC分类号： H04R5/00 , H04R2499/13 , H04S1/007 , H04S3/008 , H04S7/301 , H04S2420/01
摘要： In the described technique, electrical audio signals are processed by inverse filtering according to three filter matrices, each handling a frequency range or sample rate or both. Loudspeakers, arranged at separate positions separate within or near the sound zones, convert the electrical audio signals into corresponding acoustic audio signals. Then each of the acoustic audio signals is transferred according to a transfer matrix from each of the loudspeakers to each of the sound zones, where the transferred acoustic signals contribute to the corresponding reception sound signals. The three filter matrices are configured to compensate for the transfer matrix so that each one of the reception sound signals corresponds to one of the electrical audio signals.
摘要翻译：在所描述的技术中，通过根据三个滤波器矩阵进行逆滤波处理电音频信号，每个滤波器矩阵处理频率范围或采样率，或两者都处理。扬声器布置在分离在声音区域内或附近的分离位置，将电音频信号转换成相应的声学音频信号。然后，每个声学音频信号根据从每个扬声器到每个声音区域的传输矩阵传送，其中传送的声学信号有助于相应的接收声音信号。三个滤波器矩阵被配置为补偿传送矩阵，使得每个接收声音信号对应于电音频信号中的一个。

24. 发明申请

US20140037108A1 AUTOMATIC LOUDNESS CONTROL 有权
标题翻译：自动控制
公开(公告)号：US20140037108A1
公开(公告)日：2014-02-06
申请号：US13957064
申请日：2013-08-01
申请人： Harman Becker Automotive Systems GmbH
发明人： Markus Christoph
IPC分类号： H03G3/20
CPC分类号： H03G3/20 , H03G9/005 , H03G9/025
摘要： An improved automatic loudness control system and method comprise controlling gain/attenuation applied to an input audio signal and providing an output audio signal that is the amplified/attenuated input audio signal; evaluating an actual loudness of the input audio signal from the input audio signal and a desired loudness of the input audio signal from a volume control input; and evaluating the gain/attenuation applied to the input audio signal from the actual loudness and the desired loudness of the input audio signal.
摘要翻译：改进的自动响度控制系统和方法包括控制施加到输入音频信号的增益/衰减并提供作为放大/衰减的输入音频信号的输出音频信号; 从输入音频信号评估输入音频信号的实际响度和来自音量控制输入的输入音频信号的期望响度; 以及根据实际响度和输入音频信号的期望响度来评估施加到输入音频信号的增益/衰减。

25. 发明申请

US20140016792A1 ENGINE SOUND SYNTHESIS SYSTEM 有权
标题翻译：发动机声合成系统
公开(公告)号：US20140016792A1
公开(公告)日：2014-01-16
申请号：US13940884
申请日：2013-07-12
申请人： Harman Becker Automotive Systems GmbH
发明人： Markus Christoph
IPC分类号： H03G3/00
CPC分类号： H03G3/00 , G10H1/08 , G10H2210/066 , G10H2220/211 , G10H2250/235 , G10H2250/381 , G10H2250/471 , G10K15/02 , G10L19/06
摘要： An engine sound synthesis system is operable to analyze sound. Operation of the system may include providing an input sound signal to be analysed and determining a fundamental frequency of the input signal from the input signal or from at least one guide signal. Furthermore, the frequencies of higher harmonics of the fundamental frequency are determined, thus determining harmonic model parameters. A harmonic signal based on the harmonic model parameters is synthesized and a residual signal is estimated by subtracting the harmonic signal from the input signal. Residual model parameters are estimated based on the residual signal. Furthermore, a corresponding method for synthesizing a sound signal is described.
摘要翻译：引擎声音合成系统可操作以分析声音。系统的操作可以包括提供要分析的输入声音信号，并根据输入信号或至少一个引导信号确定输入信号的基频。此外，确定基频的高次谐波频率，从而确定谐波模型参数。合成基于谐波模型参数的谐波信号，并通过从输入信号中减去谐波信号来估计残差信号。剩余模型参数根据剩余信号估计。此外，描述了用于合成声音信号的相应方法。

26. 发明申请

US20130308785A1 ACTIVE NOISE REDUCTION 有权
标题翻译：主动噪声减少
公开(公告)号：US20130308785A1
公开(公告)日：2013-11-21
申请号：US13899073
申请日：2013-05-21
申请人： Harman Becker Automotive Systems GmbH
发明人： Markus Christoph
IPC分类号： G10K11/175
CPC分类号： G10K11/178 , G10K11/175 , G10K2210/1081 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/509
摘要： A noise reducing comprises a first microphone that picks up noise signal at a first location and that is electrically coupled to a first microphone output path; a loudspeaker that is electrically coupled to a loudspeaker input path and that radiates noise reducing sound at a second location; a second microphone that picks up residual noise from the noise and the noise reducing sound at a third location and that is electrically coupled to a second microphone output path; a first active noise reducing filter that is connected between the first microphone output path and the loudspeaker input path; and a second active noise reducing filter that is connected between the second microphone output path and the loudspeaker input path; in which the first active noise reduction filter is a shelving or equalization filter or comprises at least one shelving or equalization filter or both.
摘要翻译：噪声降低包括在第一位置拾取噪声信号并且电耦合到第一麦克风输出路径的第一麦克风; 扬声器，其电耦合到扬声器输入路径并且在第二位置辐射噪声降低声音; 第二麦克风，其拾取来自噪声的残留噪声和在第三位置处的噪声降低声音，并且电耦合到第二麦克风输出路径; 连接在第一麦克风输出路径和扬声器输入路径之间的第一有源降噪滤波器; 以及连接在所述第二麦克风输出路径和所述扬声器输入路径之间的第二有源降噪滤波器; 其中第一有源噪声降低滤波器是搁置或均衡滤波器或包括至少一个搁置或均衡滤波器或两者。

27. 发明申请

US20130101129A1 ACTIVE NOISE REDUCTION 有权
标题翻译：主动噪声减少
公开(公告)号：US20130101129A1
公开(公告)日：2013-04-25
申请号：US13656274
申请日：2012-10-19
申请人： Harman Becker Automotive Systems GmbH , Alyssa Harvey Dawson
发明人： Markus Christoph , Johann Freundorfer , Thomas Hommel
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/1081 , G10K2210/3028 , H04R3/002 , H04R2410/05
摘要： A noise reducing sound reproduction system comprises a loudspeaker that is connected to a loudspeaker input path and that radiates noise reducing sound. A microphone is connected to a microphone output path and picks up the noise or a residual thereof An active noise reduction filter is connected between the microphone output path and the loudspeaker input path, and the active noise reduction filter comprises at least one shelving filter.
摘要翻译：降噪声音再现系统包括连接到扬声器输入路径并且辐射降噪声音的扬声器。麦克风连接到麦克风输出路径并拾取噪声或其残留。有源降噪滤波器连接在麦克风输出路径和扬声器输入路径之间，并且主动降噪滤波器包括至少一个搁架滤波器。

28. 发明授权

US11335317B2 Road and engine noise control 有权
公开(公告)号：US11335317B2
公开(公告)日：2022-05-17
申请号：US15764810
申请日：2016-10-10
申请人： Harman Becker Automotive Systems GmbH
发明人： Markus Christoph
IPC分类号： G10K11/178
摘要： Exemplary road and engine noise control systems and methods include directly picking up road noise from a structural element of a vehicle to generate a first sense signal representative of the road noise, directly picking up engine noise from an engine of the vehicle to generate a second sense signal representative of the engine noise, and combining the first sense signal and the second sense signal to provide a combination signal representing the combination of the first sense signal and the second sense signal. The systems and methods further include broadband active noise control filtering to generate a filtered combination signal from the combination signal, converting the filtered combination signal provided by the active noise control filtering into anti-noise and radiating the anti-noise to a listening position in an interior of the vehicle. The filtered combination signal is configured so that the anti-noise reduces the noise at the listening position.

29. 发明授权

US10959031B2 Loudspeaker assembly 有权
公开(公告)号：US10959031B2
公开(公告)日：2021-03-23
申请号：US16068074
申请日：2016-12-14
申请人： Harman Becker Automotive Systems GmbH
发明人： Markus Christoph
IPC分类号： H04S7/00 , H04R1/02 , H04R1/40
摘要： A loudspeaker assembly includes L loudspeakers, each being substantially the same size and having a peripheral front surface, and an enclosure having a hollow cylindrical body and end closures, the cylindrical body and end closures being made of material that is impervious to air. The cylindrical body comprises L openings therein. The L openings are sized and shaped to correspond with the peripheral front surfaces of the L loudspeakers, and have central axes. The central axes of the L openings are contained in a radial plane, and the angles between adjacent axes are identical. The L loudspeakers are disposed in the L openings and hermetically secured to the cylindrical body. L is equal to or greater than 2. A higher-order loudspeaker system comprising such a loudspeaker assembly and a beamforming module.

30. 发明授权

US10909963B2 Automatic noise control 有权
公开(公告)号：US10909963B2
公开(公告)日：2021-02-02
申请号：US16200021
申请日：2018-11-26
申请人： Harman Becker Automotive Systems GmbH
发明人： Markus Christoph
IPC分类号： G10K11/178 , H04R5/02 , B60N2/879 , B60N2/427
摘要： Active noise control systems and methods are disclosed that include generating with a first sub-system, anti-noise that is configured to reduce or cancel noise occurring at a listening position. Generating with a second sub-system, anti-noise that is configured to reduce or cancel noise occurring at the listening position. The first active noise control sub-system has a higher robustness than the second active noise control sub-system.

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