公开(公告)号：WO2012015404A1

公开(公告)日：2012-02-02

申请号：PCT/US2010/043629

申请日：2010-07-29

Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC ,  KARR, Lawrence, J.

Inventor： KARR, Lawrence, J.

IPC: H04H40/72

CPC classification number: G05D19/02 ,  G05B15/02 ,  G05B2219/2642 ,  G10K2210/12 ,  G10K2210/30351 ,  G10K2210/3055

Abstract: Technologies are generally described for automatically managing noise profile in a predefined area by determining a desired noise profile within the predefined area, monitoring noise levels and/or frequencies within the predefined area, and adjusting operational aspects of one or more noise emitting devices in order to achieve the desired noise profile within the predefined area. A noise management system according to embodiments may be centrally controlled or organized in a distributed manner with control modules on individual noise emitting devices interacting through wired or wireless media. Furthermore, the adjustment of the operations of the noise emitting devices in order to achieve the desired noise profile may be accomplished through computing an acoustic transfer function or measuring actual noise levels/frequencies.

Abstract translation: 一般来说，技术被描述为通过在预定区域内确定期望的噪声分布，监测预定区域内的噪声水平和/或频率，以及调整一个或多个噪声发射装置的操作方面来自动管理预定区域中的噪声分布，以便 在预定区域内实现所需的噪声分布。 根据实施例的噪声管理系统可以以分布式方式集中控制或组织，其中控制模块位于通过有线或无线介质进行交互的各个噪声发射设备上。 此外，为了实现期望的噪声分布，可以通过计算声学传递函数或测量实际噪声电平/频率来实现噪声发射装置的操作的调整。

公开(公告)号：WO2016019239A1

公开(公告)日：2016-02-04

申请号：PCT/US2015/043105

申请日：2015-07-31

Applicant: BOSE CORPORATION

Inventor： WARKENTIN, David ,  STRUZIK, Ryan ,  TORRES, Wade ,  BENDER, Paul T. ,  EASTERBROOK, David

IPC: H04R1/00 ,  G10K11/178 ,  H04R1/10

CPC classification number: G10K11/1786 ,  G10K11/178 ,  G10K11/17857 ,  G10K11/17873 ,  G10K2210/1282 ,  G10K2210/30351 ,  G10K2210/3055 ,  G10K2210/3221 ,  G10K2210/3226 ,  H04R1/1083 ,  H04R2227/001 ,  H04R2410/01 ,  H04R2499/13

Abstract: A method and system for attenuating noise comprises identifying a location in an area at which sound emitted from one or more speakers has acoustic characteristics that are substantially similar in measure to corresponding acoustic characteristics of the emitted sound at a location approximated to be near an ear of an occupant of the area. A microphone, which may be a virtual microphone, is disposed at the identified location. The microphone detects sound at the identified location. In response to the sound detected by the microphone, the one or more speakers emit a noise-canceling audio signal adapted to attenuate one or more frequencies in the sound detected by the microphone.

Abstract translation: 用于衰减噪声的方法和系统包括识别在一个区域中的位置，在该区域中，从一个或多个扬声器发出的声音的声学特性基本上类似于在近似于靠近耳朵的耳朵处的发射声音的相应声学特性 该地区的乘客。 可以是虚拟麦克风的麦克风被布置在所识别的位置。 麦克风在识别的位置检测声音。 响应于由麦克风检测到的声音，一个或多个扬声器发出适于衰减由麦克风检测到的声音中的一个或多个频率的噪声消除音频信号。

公开(公告)号：WO2013169483A1

公开(公告)日：2013-11-14

申请号：PCT/US2013/037942

申请日：2013-04-24

Applicant: CIRRUS LOGIC, INC.

Inventor： ZHOU, Dayong ,  LU, Yang ,  HENDRIX, Jon, D. ,  ALDERSON, Jeffrey ,  MILLER, Antonio, John ,  YONG, Chin ,  KAMATH, Gautham, Devendra

IPC: G10K11/178

CPC classification number: G10K11/175 ,  G10K11/16 ,  G10K11/178 ,  G10K2210/00 ,  G10K2210/108 ,  G10K2210/3011 ,  G10K2210/30231 ,  G10K2210/3028 ,  G10K2210/30351 ,  G10K2210/503

Abstract: An adaptive noise canceling (ANC) circuit adaptively generates an anti-noise signal from a reference microphone signal that is injected into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone proximate the speaker provides an error signal. A secondary path estimating adaptive filter estimates the electro- acoustical path from the noise canceling circuit through the transducer so that source audio can be removed from the error signal. Tones in the source audio, such as remote ringtones, present in downlink audio during initiation of a telephone call, are detected by a tone detector using accumulated tone persistence and non-silence hangover counting, and adaptation of the secondary path estimating adaptive filter is halted to prevent adapting to the tones. Adaptation of the adaptive filters is then sequenced so any disruption of the secondary path adaptive filter response is removed before allowing the anti-noise generating filter to adapt.

Abstract translation: 自适应噪声消除（ANC）电路自适应地从注入扬声器或其它换能器输出的参考麦克风信号产生抗噪声信号，以引起环境声音的消除。 靠近扬声器的错误麦克风提供了错误信号。 二次路径估计自适应滤波器估计来自噪声消除电路的电声路径通过换能器，使得源音频可以从误差信号中去除。 在开始电话呼叫期间存在于下行链路音频中的源音频中的音调（例如远程铃声）由使用累积的音调持续性和非静音宿醉计数的音调检测器检测，并且停止辅助路径估计自适应滤波器的适配 以防止适应色调。 然后对自适应滤波器的适应进行排序，因此在允许抗噪声产生滤波器适应之前，去除二次路径自适应滤波器响应的任何中断。

公开(公告)号：WO2004009007A1

公开(公告)日：2004-01-29

申请号：PCT/US2003/022707

申请日：2003-07-15

Applicant: THE PENN STATE RESEARCH FOUNDATION

Inventor： KIM, BENJAMIN, Jung

IPC: A61F11/06

CPC classification number: G10K11/178 ,  G10K2210/3012 ,  G10K2210/3022 ,  G10K2210/30232 ,  G10K2210/30351 ,  G10K2210/3055 ,  G10K2210/511

Abstract: A method for noninvasive on-line secondary path modeling for the filtered-X LMS algorithm actively controls periodic noise. The method, based in the frequency domain, uses the concept of linear independence of two equations/two unknowns to arrive at the secondary path estimate. Linear independence of two equations is achieved by adjusting the control filter output via the filter coefficients prior to the acquisition of the second set of data corresponding to the second equation.

Abstract translation: 用于过滤X LMS算法的无创在线二次路径建模的方法主动地控制周期性噪声。 该方法基于频域，使用两个方程/两个未知数的线性独立性的概念来得出次级路径估计。 通过在获取对应于第二方程的第二组数据之前通过滤波器系数调整控制滤波器输出来实现两个方程的线性独立性。

公开(公告)号：WO02069317A3

公开(公告)日：2003-03-13

申请号：PCT/CA0200238

申请日：2002-02-26

Applicant: ONTARIO LTD 777388 ,  MOELLER KLAUS R ,  MOELLER NIKLAS ,  RUSU MIRCEA ,  DERLA CARL

Inventor： MOELLER KLAUS R ,  MOELLER NIKLAS ,  RUSU MIRCEA ,  DERLA CARL

IPC: G10K11/175 ,  H04M11/02 ,  H05K5/02 ,  H05K5/00

CPC classification number: G10K11/175 ,  G10K2210/3014 ,  G10K2210/30351 ,  G10K2210/3049 ,  H04K3/42 ,  H04K3/43 ,  H04K3/45 ,  H04K3/825 ,  H04K2203/12 ,  H04K2203/34 ,  H04M11/027 ,  H04R3/002 ,  H04R27/00 ,  H05K5/0247

Abstract: A sound masking system for shaping the ambient noise level in a physical environment. The sound masking system comprises a networked and distributed system having a number of master units coupled together and to a control unit. One or more of the master units may include satellite sound masking units which function to reproduce the sound masking signal generated by the master sound masking unit. Each of the master units is addressable over the network by the control unit enabling the control unit to program the contour, spectral band, and gain characteristics of the sound masking output signal. The system may also include a remote control unit which provides the capability to tune and adjust each master sound masking unit in situ without requiring physical access through the ceiling installation. According to another aspect, there is a networked paging system with individually addressable speaker units for announcing a paging signal selected from a number of paging signals.

Abstract translation: 用于在物理环境中整形环境噪声水平的声音遮蔽系统。 声音掩蔽系统包括具有耦合在一起的多个主单元和控制单元的网络和分布式系统。 一个或多个主单元可以包括用于再现由主声音掩蔽单元产生的声音屏蔽信号的卫星声音屏蔽单元。 每个主单元可由控制单元通过网络寻址，使得控制单元能够编程声屏蔽输出信号的轮廓，频谱带和增益特性。 该系统还可以包括遥控单元，该遥控单元提供能够在原地调整和调整每个主声音屏蔽单元的能力，而不需要通过天花板安装进行物理访问。 根据另一方面，存在具有单独可寻址的扬声器单元的联网寻呼系统，用于通知从多个寻呼信号中选择的寻呼信号。

公开(公告)号：WO2018190832A1

公开(公告)日：2018-10-18

申请号：PCT/US2017/027234

申请日：2017-04-12

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： CLARK, Alexander Wayne ,  WANG, Henry

IPC: G10K11/00 ,  G06K9/62

CPC classification number: G06K9/00288 ,  G10K11/1783 ,  G10K11/1787 ,  G10K2210/1081 ,  G10K2210/30351 ,  G10K2210/3056

Abstract: In some examples, an audio output device can provide audio setting modification based on presence detection by receiving an input from a camera in response to the camera detecting the presence of a person, and modify an audio setting of the audio output device in response to receiving the input from the camera.

公开(公告)号：WO2017048464A1

公开(公告)日：2017-03-23

申请号：PCT/US2016/048095

申请日：2016-08-22

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： BECKMAN, Brian C. ,  KIMCHI, Gur

IPC: G10K11/178 ,  B64C39/02 ,  G05D19/02 ,  G05D27/02 ,  G05D1/10

CPC classification number: G10K11/178 ,  B64C39/024 ,  B64C2201/024 ,  B64C2201/027 ,  B64C2201/108 ,  B64C2220/00 ,  G01S19/13 ,  G05D1/101 ,  G05D19/02 ,  G05D27/02 ,  G06N99/005 ,  G10K11/17823 ,  G10K11/17853 ,  G10K11/17873 ,  G10K2210/1281 ,  G10K2210/30231 ,  G10K2210/30351 ,  G10K2210/3038 ,  G10K2210/3045

Abstract: Noises that are to be emitted by an aerial vehicle (1210) during operations may be predicted using one or more machine learning systems, algorithms or techniques. Anti-noises having equal or similar intensities and equal but out-of-phase frequencies may be identified and generated based on the predicted noises, thereby reducing or eliminating the net effect of the noises. The machine learning systems, algorithms or techniques used to predict such noises may be trained using emitted sound pressure levels observed during prior operations of aerial vehicles, as well as environmental conditions, operational characteristics of the aerial vehicles or locations of the aerial vehicles during such prior operations. Anti-noises may be identified and generated based on an overall sound profile of the aerial vehicle, or on individual sounds emitted by the aerial vehicle by discrete sources.

Abstract translation: 可以使用一个或多个机器学习系统，算法或技术来预测在操作期间由飞行器（1210）发射的噪声。 可以基于预测的噪声来识别和产生具有相同或相似的强度和等于或相同的频率的抗噪声，从而减少或消除噪声的净效应。 可以使用用于预测这种噪声的机器学习系统，算法或技术来使用在先前的飞行器操作期间观察到的发射声压级，以及环境条件，空中飞行器的操作特性或在这样的前述过程中的空中飞行器的位置 操作。 可以基于飞行器的整体声音轮廓或由离散源的飞行器发出的单独声音来识别和产生抗噪声。

公开(公告)号：WO2014172021A1

公开(公告)日：2014-10-23

申请号：PCT/US2014/019469

申请日：2014-02-28

Applicant: CIRRUS LOGIC, INC.

Inventor： YONG, Chin Huang ,  ALDERSON, Jeffrey D.

IPC: G10K11/178

CPC classification number: G10K11/16 ,  G10K11/178 ,  G10K11/17817 ,  G10K11/17833 ,  G10K11/17881 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3014 ,  G10K2210/3017 ,  G10K2210/3022 ,  G10K2210/3027 ,  G10K2210/30351

Abstract: A processing circuit may comprise an adaptive filter having a response generating an antinoise signal from a reference microphone signal, a secondary path estimate filter modeling an electroacoustic path of a source audio signal, a biasing portion that generates a scaled antinoise signal by applying a scaling factor and the response of the secondary path estimate filter to the antinoise signal, and a coefficient control block that shapes the response of the adaptive filter in conformity with the reference microphone signal and a modified playback corrected error signal by adapting the response of the adaptive filter to minimize ambient audio sounds in the error microphone signal, wherein the playback corrected error is based on a difference between the error microphone signal and source audio signal and the modified playback corrected error signal is based on a difference between the playback corrected error signal and scaled antinoise signal.

Abstract translation: 处理电路可以包括具有从参考麦克风信号产生抗噪声信号的响应的自适应滤波器，对源音频信号的电声路径建模的次路径估计滤波器，通过应用比例因子产生缩放抗噪声信号的偏置部分 以及二次路径估计滤波器对抗噪声信号的响应，以及系数控制块，其通过将自适应滤波器的响应调整为适应于参考麦克风信号和修改的重放校正误差信号来对自适应滤波器的响应进行整形 最小化误差麦克风信号中的环境音频声音，其中重放校正误差基于误差麦克风信号和源音频信号之间的差异，并且经修改的重放校正误差信号基于重放校正误差信号和缩放抗噪声之间的差异 信号。

公开(公告)号：WO2002069317A2

公开(公告)日：2002-09-06

申请号：PCT/CA2002/000238

申请日：2002-02-26

Applicant: 777388 ONTARIO LIMITED ,  MOELLER, Klaus, R. ,  MOELLER, Niklas ,  RUSU, Mircea ,  DERLA, Carl

Inventor： MOELLER, Klaus, R. ,  MOELLER, Niklas ,  RUSU, Mircea ,  DERLA, Carl

IPC: G10K11/00

CPC classification number: G10K11/175 ,  G10K2210/3014 ,  G10K2210/30351 ,  G10K2210/3049 ,  H04K3/42 ,  H04K3/43 ,  H04K3/45 ,  H04K3/825 ,  H04K2203/12 ,  H04K2203/34 ,  H04M11/027 ,  H04R3/002 ,  H04R27/00 ,  H05K5/0247

Abstract: A sound masking system for shaping the ambient noise level in a physical environment. The sound masking system comprises a networked and distributed system having a number of master units coupled together and to a control unit. One or more of the master units may include satellite sound masking units which function to reproduce the sound masking signal generated by the master sound masking unit. Each of the master units is addressable over the network by the control unit enabling the control unit to program the contour, spectral band, and gain characteristics of the sound masking output signal. The system may also include a remote control unit which provides the capability to tune and adjust each master sound masking unit in situ without requiring physical access through the ceiling installation. According to another aspect, there is a networked paging system with individually addressable speaker units for announcing a paging signal selected from a number of paging signals.

Abstract translation: 用于在物理环境中整形环境噪声水平的声音遮蔽系统。 声音掩蔽系统包括具有耦合在一起的多个主单元和控制单元的网络和分布式系统。 一个或多个主单元可以包括用于再现由主声音掩蔽单元产生的声音屏蔽信号的卫星声音屏蔽单元。 每个主单元可由控制单元通过网络寻址，使得控制单元能够编程声屏蔽输出信号的轮廓，频谱带和增益特性。 该系统还可以包括遥控单元，该遥控单元提供能够在原地调整和调整每个主声音屏蔽单元的能力，而不需要通过天花板安装进行物理访问。 根据另一方面，存在具有单独可寻址的扬声器单元的联网寻呼系统，用于通知从多个寻呼信号中选择的寻呼信号。

公开(公告)号：WO1994017762A1

公开(公告)日：1994-08-18

申请号：PCT/US1994001187

申请日：1994-02-08

Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  EATWELL, Graham, P.

IPC: A61F11/06

CPC classification number: G05B17/02 ,  G10K11/178 ,  G10K2210/3018 ,  G10K2210/30232 ,  G10K2210/3025 ,  G10K2210/3033 ,  G10K2210/30351 ,  G10K2210/3045 ,  G10K2210/3057 ,  H03H21/0012

Abstract: This invention relates to an improved method of on-line system identification for use with active control systems. The method requires less computation and reduces the problem of coefficient jitter in the filters (12, 22) of the active control system. The system of this invention uses a fixed test signal (y(n)) which is designed to have a particular power spectrum. In one embodiment of the invention the spectrum is chosen to be "block white", in another the spectrum is chosen to be dependent upon the spectrum of the residual signal and/or the amplitude of the system transfer function. The use of a fixed test signal reduces the computational requirement of the system identification. In another aspect of the invention, a means (model) is provided for estimating the effect of the test signal and subtracting this from the residual (error) (u(n)) signal used to adapt the control system. This greatly reduces the problem of coefficient or weight jitter.

Abstract translation: 本发明涉及一种用于主动控制系统的在线系统识别的改进方法。 该方法需要更少的计算，并且减少了主动控制系统的滤波器（12,22）中的系数抖动的问题。 本发明的系统使用被设计为具有特定功率谱的固定测试信号（y（n））。 在本发明的一个实施例中，频谱被选择为“块白”，另一个频谱被选择为取决于残差信号的频谱和/或系统传递函数的振幅。 使用固定的测试信号可以减少系统识别的计算需求。 在本发明的另一方面，提供了一种用于估计测试信号的影响并从用于调整控制系统的残差（误差）（u（n））信号中减去这一点的装置（模型）。 这大大减少了系数或重量抖动的问题。