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1. 发明授权

US5243512A Method and apparatus for minimizing vibration 失效
标题翻译：减少振动的方法和装置
公开(公告)号：US5243512A
公开(公告)日：1993-09-07
申请号：US703330
申请日：1991-05-20
申请人： Thomas H. Putman , Peter D. Hill
发明人： Thomas H. Putman , Peter D. Hill
IPC分类号： G05D19/02 , G10K11/178
CPC分类号： G05D19/02 , G10K11/1786 , G10K2210/121 , G10K2210/125 , G10K2210/129 , G10K2210/3012 , G10K2210/3019 , G10K2210/3021 , G10K2210/3032 , G10K2210/3046 , G10K2210/3053
摘要： Vibration of a system such as a motor and pump on a platform or a transformer is minimized by applying a compensating force to the system. The optimum compensating force is determined by measuring the initial vibration and using that measurement in one of three algorithms to determine an adjustment to be made to the compensating force applied to the system at the time the initial vibration was measured. The adjusted compensating force is applied to the system which changes the vibration. That vibration is measured and applied to the selected algorithm to determine a second adjustment to the compensating force. The process is repeated until a compensating force is found which produces zero vibration, minimum vibration or a desired vibration. A plurality of sensors for measuring vibration and a plurality of actuators for applying a compensating force are preferably used.
摘要翻译：通过对系统施加补偿力，使诸如电动机和平台或变压器上的泵的系统的振动被最小化。通过测量初始振动并使用三种算法之一的测量来确定最佳补偿力，以确定在测量初始振动时对系统施加的补偿力的调整。调整后的补偿力被施加到改变振动的系统上。测量该振动并将其应用于所选择的算法，以确定补偿力的第二调整。重复该过程，直到发现产生零振动，最小振动或所需振动的补偿力。优选使用多个用于测量振动的传感器和用于施加补偿力的多个致动器。

2. 发明授权

US09779719B2 ANC convergence factor estimation as a function of frequency 有权
公开(公告)号：US09779719B2
公开(公告)日：2017-10-03
申请号：US15365994
申请日：2016-12-01
申请人： Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America
发明人： Darrel Ray Judd
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K11/17854 , G10K11/17881 , G10K2210/1282 , G10K2210/3021 , G10K2210/3028 , G10K2210/3055 , G10K2210/504
摘要： A method of operating an audio system in a vehicle includes providing m number of microphones disposed within a passenger compartment of the vehicle. The microphones produce a plurality of microphone signals. Within the passenger compartment of the vehicle, k number of loudspeakers are provided. A plurality of convergence factors μ for use in performing active noise control are estimated. The estimating includes calculating an Eigen value λ(ω) of an autocorrelation matrix of a passenger compartment transfer function as λ k ⁡ ( ω ) = A k ⁡ ( ω ) 2 2 , wherein Ak(ω) is the frequency response of the passenger compartment transfer function. A frequency ωmin of a local minimum of λ(ω) is determined. A largest stable value for μMax(ωmin) is found by experimentation, wherein a rotational speed of an engine of the vehicle, expressed in revolutions per minute, frpm=2πωmin. A calibration factor is calculated as L=λ(ωmin)μMax(ωmin). All values of μMax(ω) are estimated as μMax ⁡ ( ω ) = L λ ⁡ ( ω ) . A plurality of active noise controlled audio signals are transmitted to the loudspeaker. The active noise controlled audio signals are dependent upon the microphone signals and the estimated convergence factors.

3. 发明申请

US20170162185A1 ANC CONVERGENCE FACTOR ESTIMATION AS A FUNCTION OF FREQUENCY 有权
公开(公告)号：US20170162185A1
公开(公告)日：2017-06-08
申请号：US15365994
申请日：2016-12-01
申请人： Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America
发明人： DARREL RAY JUDD
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K11/17854 , G10K11/17881 , G10K2210/1282 , G10K2210/3021 , G10K2210/3028 , G10K2210/3055 , G10K2210/504
摘要： A method of operating an audio system in a vehicle includes providing m number of microphones disposed within a passenger compartment of the vehicle. The microphones produce a plurality of microphone signals. Within the passenger compartment of the vehicle, k number of loudspeakers are provided. A plurality of convergence factors μ for use in performing active noise control are estimated. The estimating includes calculating an Eigen value λ(ω) of an autocorrelation matrix of a passenger compartment transfer function as λ k  ( ω ) = A k  ( ω ) 2 2 , wherein Ak(ω) is the frequency response of the passenger compartment transfer function. A frequency ωmin of a local minimum of λ(ω) is determined. A largest stable value for μMax(ωmin) is found by experimentation, wherein a rotational speed of an engine of the vehicle, expressed in revolutions per minute, frpm=2πωmin. A calibration factor is calculated as L=λ(ωmin)μMax(ωmin). All values of μMax(ω) are estimated as μMax  ( ω ) = L λ  ( ω ) . A plurality of active noise controlled audio signals are transmitted to the loudspeaker. The active noise controlled audio signals are dependent upon the microphone signals and the estimated convergence factors.

4. 发明授权

US5473698A Method of controlling the application of counter-vibration to a structure 失效
标题翻译：控制反振动应用于结构的方法
公开(公告)号：US5473698A
公开(公告)日：1995-12-05
申请号：US156013
申请日：1993-11-23
申请人： Kenneth D. Garnjost , Gonzolo J. Rey
发明人： Kenneth D. Garnjost , Gonzolo J. Rey
IPC分类号： E04H9/16 , F16F15/02 , G05D19/02 , G10K11/178 , G06K11/16
CPC分类号： G10K11/1782 , F16F15/02 , G10K2210/129 , G10K2210/3011 , G10K2210/3021 , G10K2210/3212 , G10K2210/501 , G10K2210/511
摘要： A method of controlling the application of counter-vibration to a structure (20) so as to reduce the effect of externally-created sinusoidal vibration thereon includes the steps of: mounting a vibratory force generator (19) on the structure; mounting an accelerometer (21) on the structure at a point at which vibration is to be measured; providing a tunable filter (16) capable of resonating at an electrically-controllable frequency; providing an adaptive frequency estimator (22) arranged to produce a tuning signal (.theta.) as a function of the accelerometer output signal (a); supplying the tuning signal and accelerometer output signal to the filter; continuously adjusting the resonant frequency of the filter so as to equal the frequency of the accelerometer output signal so that the accelerometer output signal will be greatly amplified at the filter output; and supplying the filter output signal as an electrical command signal (y) to the force generator; thereby to cause the vibratory force generator to apply counter-vibrations to the structure to reduce the effect of the externally-created vibrations at the measurement point.
摘要翻译：一种控制对结构（20）施加反振动以减少外部产生的正弦振动的影响的方法包括以下步骤：将振动力发生器（19）安装在结构上; 在要测量振动的点处将加速度计（21）安装在结构上; 提供能够以电可控频率谐振的可调谐滤波器（16）; 提供自适应频率估计器（22），其被布置为产生作为加速度计输出信号（a）的函数的调谐信号（θ）; 将调谐信号和加速度计输出信号提供给滤波器; 连续调节滤波器的谐振频率，使其等于加速度计输出信号的频率，使加速度计输出信号在滤波器输出端大大放大; 并将所述滤波器输出信号作为电指令信号（y）提供给所述力发生器; 从而使振动力发生器对结构施加反振动，以减少测量点处的外部产生的振动的影响。

5. 发明申请

US20180227659A1 OFF-EAR AND ON-EAR HEADPHONE DETECTION 审中-公开
公开(公告)号：US20180227659A1
公开(公告)日：2018-08-09
申请号：US15946194
申请日：2018-04-05
申请人： Avnera Corporation
发明人： Amit Kumar , Eric Sorensen , Shankar Rathoud
IPC分类号： H04R1/10 , G10K11/178
CPC分类号： H04R1/1041 , G10K11/178 , G10K11/17855 , G10K2210/1081 , G10K2210/3021 , H04R1/1083 , H04R3/00 , H04R29/00 , H04R2410/05 , H04R2460/03
摘要： A headphone detector including a headphone and a processor. The headphone has a microphone and a speaker, and the microphone is configured to generate an audio signal based on an output of the speaker. The processor is configured to receive the audio signal, determine a characteristic of the audio signal, and assess whether the headphone is on ear or off ear based on a comparison of the characteristic to a threshold. The threshold corresponds to one or more of an audio response of the audio signal at a corresponding frequency and an audio response of a feedback microphone signal at a corresponding frequency, under one or more known conditions.

6. 发明申请

US20170330551A1 METHOD AND SYSTEM FOR SELECTING SENSOR LOCATIONS ON A VEHICLE FOR ACTIVE ROAD NOISE CONTROL 有权
公开(公告)号：US20170330551A1
公开(公告)日：2017-11-16
申请号：US15592755
申请日：2017-05-11
申请人： Harman Becker Automotive Systems GmbH
发明人： Nikos ZAFEIROPOULOS
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K2210/124 , G10K2210/12821 , G10K2210/129 , G10K2210/1291 , G10K2210/3018 , G10K2210/3021 , G10K2210/3022 , G10K2210/3028 , G10K2210/3046 , G10K2210/3053 , G10K2210/3055 , H04R2499/13
摘要： The present disclosure provides a method for determining an arrangement of reference sensors for active road noise control (ARNC) in a vehicle with an automatic calibration system. The method includes mounting a plurality of vibrational sensors on a plurality of structure elements of the vehicle to generate a plurality of vibrational input signals and mounting at least one microphone inside a cabin of the vehicle to capture at least one acoustic input signal. The method further includes determining an arrangement of reference sensors from the plurality of vibrational sensors by determining a subset of vibrational sensors which sense the main mechanical inputs of road noise contributing to the at least one acoustic input signal.

7. 发明申请

US20170013345A1 OFF-EAR AND ON-EAR HEADPHONE DETECTION 有权
标题翻译：远端和耳机前端检测
公开(公告)号：US20170013345A1
公开(公告)日：2017-01-12
申请号：US14850859
申请日：2015-09-10
申请人： Avnera Corporation
发明人： Amit Kumar , Eric Sorensen , Shankar Rathoud
IPC分类号： H04R1/10
CPC分类号： H04R1/1041 , G10K11/178 , G10K11/17855 , G10K2210/1081 , G10K2210/3021 , H04R1/1083 , H04R3/00 , H04R29/00 , H04R2410/05 , H04R2460/03
摘要： A headphone detector including a headphone and a processor. The headphone has a microphone and a speaker, and the microphone is configured to generate an audio signal based on an output of the speaker. The processor is configured to receive the audio signal, determine a characteristic of the audio signal, and assess whether the headphone is on ear or off ear based on a comparison of the characteristic to a threshold. In another aspect, an off-ear detection (OED) system includes a headphone and an OED processor. The headphone has a speaker, a feedforward microphone, and a feedback microphone. The OED processor is configured to determine whether the headphone is off ear or on ear, based at least in part on a headphone audio signal, a feedforward microphone signal, and a feedback microphone signal.
摘要翻译：一种耳机检测器，包括耳机和处理器。耳机具有麦克风和扬声器，麦克风被配置为基于扬声器的输出产生音频信号。处理器被配置为接收音频信号，确定音频信号的特性，并且基于特征与阈值的比较来评估耳机是耳朵还是耳朵。在另一方面，一种耳朵检测（OED）系统包括耳机和OED处理器。耳机具有扬声器，前馈麦克风和反馈麦克风。 OED处理器被配置为至少部分地基于耳机音频信号，前馈麦克风信号和反馈麦克风信号来确定耳机是否脱离耳朵或耳朵。

8. 发明授权

US10013967B2 Method and system for selecting sensor locations on a vehicle for active road noise control 有权
公开(公告)号：US10013967B2
公开(公告)日：2018-07-03
申请号：US15592755
申请日：2017-05-11
申请人： Harman Becker Automotive Systems GmbH
发明人： Nikos Zafeiropoulos
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K2210/124 , G10K2210/12821 , G10K2210/129 , G10K2210/1291 , G10K2210/3018 , G10K2210/3021 , G10K2210/3022 , G10K2210/3028 , G10K2210/3046 , G10K2210/3053 , G10K2210/3055 , H04R2499/13
摘要： The present disclosure provides a method for determining an arrangement of reference sensors for active road noise control (ARNC) in a vehicle with an automatic calibration system. The method includes mounting a plurality of vibrational sensors on a plurality of structure elements of the vehicle to generate a plurality of vibrational input signals and mounting at least one microphone inside a cabin of the vehicle to capture at least one acoustic input signal. The method further includes determining an arrangement of reference sensors from the plurality of vibrational sensors by determining a subset of vibrational sensors which sense the main mechanical inputs of road noise contributing to the at least one acoustic input signal.

9. 发明授权

US09967647B2 Off-ear and on-ear headphone detection 有权
公开(公告)号：US09967647B2
公开(公告)日：2018-05-08
申请号：US14850859
申请日：2015-09-10
申请人： Avnera Corporation
发明人： Amit Kumar , Eric Sorensen , Shankar Rathoud
IPC分类号： H04R1/10 , G10K11/178 , H04R3/00 , H04R29/00
CPC分类号： H04R1/1041 , G10K11/178 , G10K11/17855 , G10K2210/1081 , G10K2210/3021 , H04R1/1083 , H04R3/00 , H04R29/00 , H04R2410/05 , H04R2460/03
摘要： A headphone detector including a headphone and a processor. The headphone has a microphone and a speaker, and the microphone is configured to generate an audio signal based on an output of the speaker. The processor is configured to receive the audio signal, determine a characteristic of the audio signal, and assess whether the headphone is on ear or off ear based on a comparison of the characteristic to a threshold. In another aspect, an off-ear detection (OED) system includes a headphone and an OED processor. The headphone has a speaker, a feedforward microphone, and a feedback microphone. The OED processor is configured to determine whether the headphone is off ear or on ear, based at least in part on a headphone audio signal, a feedforward microphone signal, and a feedback microphone signal.

10. 发明授权

US5553154A Vehicle internal noise reduction system and the method thereof 失效
标题翻译：车内降噪系统及其方法
公开(公告)号：US5553154A
公开(公告)日：1996-09-03
申请号：US357118
申请日：1994-12-16
申请人： Manpei Tamamura , Hiroshi Iidaka , Eiji Shibata
发明人： Manpei Tamamura , Hiroshi Iidaka , Eiji Shibata
IPC分类号： B60R11/02 , G06F17/10 , G10K11/178 , H03H17/00 , H03H17/02 , H03H21/00 , A61F11/06 , H03B29/00
CPC分类号： G10K11/1784 , G10K2210/1282 , G10K2210/3012 , G10K2210/3021 , G10K2210/30391 , G10K2210/3045
摘要： Pulses synchronized with the period of the noise are generated and inputted to the adaptive filter. On the other hand, the tap number of the delay line of the adaptive filter is terminated at a tap number which is equal to the interval of the inputted pulse, whereby the number of times for calculation at the adaptive filter can be substantially reduced. Furthermore, in case where the tap number of the adaptive filter is changed according to the change of the period of the noise sound, the filter coefficient for cutting the high frequency domain is convoluted into the tap value of the adaptive filter, whereby noises caused by the change of the tap number can be eliminated even when the tap number of the adaptive filter is changed.
摘要翻译：产生与噪声周期同步的脉冲并输入到自适应滤波器。另一方面，自适应滤波器的延迟线的抽头数以等于输入脉冲的间隔的抽头数终止，从而可以显着地减少自适应滤波器处的计算次数。此外，在根据噪声的周期的变化来改变自适应滤波器的抽头数的情况下，将用于切断高频域的滤波器系数卷积成自适应滤波器的抽头值，由此产生噪声即使自适应滤波器的抽头号发生变化，也可以消除抽头号的变化。

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