公开(公告)号：US08848937B2

公开(公告)日：2014-09-30

申请号：US13894149

申请日：2013-05-14

申请人： Honda Motor Co., Ltd.

发明人： Toshio Inoue ,  Kosuke Sakamoto

IPC分类号： A61F11/06 ,  G10K11/16 ,  G10K11/178

CPC分类号： G10K11/16 ,  G10K11/17833 ,  G10K2210/121 ,  G10K2210/12821 ,  G10K2210/3039 ,  G10K2210/503 ,  G10K2210/511

摘要： An active noise control apparatus includes a first active noise controller for generating a first canceling signal for a first noise type, a second active noise controller for generating a second canceling signal for a second noise type that is different from the first noise type, a mixer for mixing the first canceling signal and the second canceling signal into a mixed canceling signal, a canceling sound output unit for outputting a canceling sound based on the mixed canceling signal, and an amplitude suppressor for suppressing the amplitude of the second canceling signal depending on the amplitude of the first canceling signal.

摘要翻译： 有源噪声控制装置包括：第一有源噪声控制器，用于产生第一噪声类型的第一消除信号;第二有源噪声控制器，用于产生与第一噪声类型不同的第二噪声类型的第二抵消信号;混频器 用于将第一抵消信号和第二抵消信号混合成混合抵消信号，基于混合抵消信号输出抵消声音的消除声音输出单元和用于根据该消除信号抑制第二消除信号的振幅的幅度抑制器 第一消除信号的振幅。

公开(公告)号：US20130301848A1

公开(公告)日：2013-11-14

申请号：US13729141

申请日：2012-12-28

申请人： CIRRUS LOGIC, INC.

发明人： Dayong Zhou ,  Yang Lu ,  Jon D. Hendrix ,  Jeffrey Alderson ,  Antonio John Miller ,  Chin Yong ,  Gautham Devendra Kamath

IPC分类号： G10K11/16

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

摘要： 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.

摘要翻译： 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从噪声消除电路通过换能器的电声路径，从而可以从误差信号中去除源音频。 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：US08280073B2

公开(公告)日：2012-10-02

申请号：US12719268

申请日：2010-03-08

申请人： Alaganandan Ganeshkumar ,  Davis Y. Pan

发明人： Alaganandan Ganeshkumar ,  Davis Y. Pan

IPC分类号： H04B15/00 ,  H04B1/00 ,  A61F11/06

CPC分类号： G10K11/178 ,  G10K2210/1282 ,  G10K2210/3016 ,  G10K2210/503

摘要： A system for correcting erroneous microphone readings in a vehicle engine harmonic cancellation (EHC) system. A method for operating an engine harmonic cancelling system, includes receiving, from a first microphone at a first location in a vehicle cabin, a signal representative of noise in the vehicle cabin; receiving, from a second microphone at a second location in the vehicle cabin, a signal representative of noise in the vehicle cabin; and correlating the signal from the first microphone with the signal from the second microphone.

摘要翻译： 一种用于校正车辆发动机谐波消除（EHC）系统中的错误麦克风读数的系统。 一种用于操作发动机谐波消除系统的方法，包括从车厢中的第一位置处的第一麦克风接收代表车厢中的噪声的信号; 在车厢的第二位置从第二麦克风接收表示车厢内的噪声的信号; 并将来自第一麦克风的信号与来自第二麦克风的信号相关联。

公开(公告)号：US20110222698A1

公开(公告)日：2011-09-15

申请号：US13042497

申请日：2011-03-08

申请人： Yoshifumi Asao ,  Tsuyoshi Maeda

发明人： Yoshifumi Asao ,  Tsuyoshi Maeda

IPC分类号： G10K11/16

CPC分类号： G10K11/17825 ,  G10K11/17833 ,  G10K11/17881 ,  G10K2210/1281 ,  G10K2210/3025 ,  G10K2210/3221 ,  G10K2210/503

摘要： A noise reduction device of the present invention comprises a control filter unit for generating a control sound signal to cancel out a noise, a control speaker for outputting a control sound according to the control sound signal from the control filter unit, an error microphone for detecting a residual sound by superimposing the noise upon the control sound output from the control speaker, and an obstacle detector for detecting an obstacle around the error microphone, wherein the control filter unit generates the control sound signal according to data from the error microphone and the obstacle detector.

摘要翻译： 本发明的降噪装置包括：控制滤波器单元，用于产生用于消除噪声的控制声音信号;控制扬声器，用于根据来自控制滤波器单元的控制声音信号输出控制声音，用于检测的误差麦克风 通过将噪声叠加在从控制扬声器输出的控制声音上的残留声音和用于检测误差麦克风周围的障碍物的障碍物检测器，其中控制滤波器单元根据来自误差麦克风和障碍物的数据产生控制声音信号 探测器。

公开(公告)号：US20100179672A1

公开(公告)日：2010-07-15

申请号：US12541742

申请日：2009-08-14

申请人： Paul E. Beckmann ,  Santiago Carvajal ,  Christopher H. Perry

发明人： Paul E. Beckmann ,  Santiago Carvajal ,  Christopher H. Perry

IPC分类号： G06F17/00 ,  G06F1/26

CPC分类号： G06F3/165 ,  G06F3/04847 ,  G06F17/30749 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/30391 ,  G10K2210/3056 ,  G10K2210/3214 ,  G10K2210/503 ,  H04B1/20 ,  H04B1/202 ,  H04R1/345 ,  H04R1/403 ,  H04R3/12 ,  H04R5/02 ,  H04R5/04 ,  H04R2203/12 ,  H04R2205/022

摘要： An audio system attachable to a computer includes a sound reproduction device for producing audible sound from audio signals. The sound reproduction device includes a radio tuner and a powered speaker. The audio system further includes a connector for connecting the sound reproduction device with a computer. The computer provides audio signals from a plurality of sources, the sources including a computer CD player, digitally encoded computer files stored on the computer, and a computer network connected to the computer. The sound reproduction device further includes control buttons for controlling at least one of the computer CD player, the digitally encoded computer files and the computer network.

摘要翻译： 可连接到计算机的音频系统包括用于从音频信号产生可听见的声音的声音再现装置。 声音再现装置包括无线电调谐器和有源扬声器。 音频系统还包括用于将声音再现装置与计算机连接的连接器。 计算机提供来自多个源的音频信号，源包括计算机CD播放器，存储在计算机上的数字编码的计算机文件以及连接到计算机的计算机网络。 声音再现装置还包括用于控制计算机CD播放器，数字编码的计算机文件和计算机网络中的至少一个的控制按钮。

公开(公告)号：US20100061564A1

公开(公告)日：2010-03-11

申请号：US12525889

申请日：2008-02-06

申请人： Richard Clemow ,  Alastair Sibbald ,  Robert David Alcock

发明人： Richard Clemow ,  Alastair Sibbald ,  Robert David Alcock

IPC分类号： G10K11/16

CPC分类号： H04R1/1083 ,  G10K11/17833 ,  G10K11/17881 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3039 ,  G10K2210/503 ,  H04R5/033

摘要： An adaptive, feed-forward, ambient noise-reduction system includes a reference microphone for generating first electrical signals representing incoming ambient noise, and a connection path including a circuit for inverting these signals and applying them to a loudspeaker directed into the ear of a user. The system also includes an error microphone for generating second electrical signals representative of sound (including that generated by the loudspeaker in response to the inverted first electrical signals) approaching the user's ear. An adaptive electronic filter is provided in the connection path, together with a controller for automatically adjusting one or more characteristics of the filter in response to the first and second electrical signals. The system is configured to constrain the operation of the adaptive filter such that it always conforms to one of a predetermined family of filter responses, thereby restricting the filter to operation within a predetermined and limited set of amplitude and phase characteristics.

摘要翻译： 自适应前馈环境降噪系统包括用于产生表示进入的环境噪声的第一电信号的参考麦克风，以及包括用于反转这些信号的电路的连接路径，并将其应用到定向到用户耳朵的扬声器 。 该系统还包括误差麦克风，用于产生代表用户耳朵的代表声音（包括由扬声器产生的响应于倒置的第一电信号）的第二电信号。 连接路径中提供自适应电子滤波器以及响应于第一和第二电信号自动调整滤波器的一个或多个特性的控制器。 该系统被配置为约束自适应滤波器的操作，使得它总是符合预定的滤波器响应族中的一个，从而将滤波器限制在预定和有限的幅度和相位特性集合内的操作。

公开(公告)号：US20070142945A1

公开(公告)日：2007-06-21

申请号：US11608034

申请日：2006-12-07

申请人： Paul Beckmann ,  Santiago Carvajal ,  Christopher Perry

发明人： Paul Beckmann ,  Santiago Carvajal ,  Christopher Perry

IPC分类号： G06F17/00 ,  H03G3/00

CPC分类号： G06F3/165 ,  G06F3/04847 ,  G06F17/30749 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/30391 ,  G10K2210/3056 ,  G10K2210/3214 ,  G10K2210/503 ,  H04B1/20 ,  H04B1/202 ,  H04R1/345 ,  H04R1/403 ,  H04R3/12 ,  H04R5/02 ,  H04R5/04 ,  H04R2203/12 ,  H04R2205/022

摘要： An audio system attachable to a computer includes a sound reproduction device for producing audible sound from audio signals. The sound reproduction device includes a radio tuner and a powered speaker. The audio system further includes a connector for connecting the sound reproduction device with a computer. The computer provides audio signals from a plurality of sources, the sources including a computer CD player, digitally encoded computer files stored on the computer, and a computer network connected to the computer. The sound reproduction device further includes control buttons for controlling at least one of the computer CD player, the digitally encoded computer files and the computer network.

摘要翻译： 可连接到计算机的音频系统包括用于从音频信号产生可听见的声音的声音再现装置。 声音再现装置包括无线电调谐器和有源扬声器。 音频系统还包括用于将声音再现装置与计算机连接的连接器。 计算机提供来自多个源的音频信号，源包括计算机CD播放器，存储在计算机上的数字编码的计算机文件以及连接到计算机的计算机网络。 声音再现装置还包括用于控制计算机CD播放器，数字编码的计算机文件和计算机网络中的至少一个的控制按钮。

公开(公告)号：US20010006322A1

公开(公告)日：2001-07-05

申请号：US09756166

申请日：2001-01-09

发明人： Go Uchida ,  Syoji Shirai

IPC分类号： H01J029/50

CPC分类号： G10K11/178 ,  G10K2210/3025 ,  G10K2210/3032 ,  G10K2210/3045 ,  G10K2210/3051 ,  G10K2210/503 ,  H01J29/503

摘要： A color cathode ray tube equipped with an in-line electron gun comprising three cathodes for emitting three electron beams of an in-line arrangement toward a fluorescent screen, and a main lens for focusing the aid three electron beams on the fluorescent screen. The main lens includes a first main lens electrode and a second main lens electrode arranged in a spaced relationship in a direction of an axis of the tube and having different voltages applied thereto. Each of the first and second main lens electrodes have a single opening common to the three electron beams at opposing ends thereof, and at least one of the first main lens electrode and the second main lens electrode have therein three apertures for electron beam passage which are set back from the opposing ends, wherein T and S have values in the region where the following inequalities are satisfied,2Snull14.6nullTnull28.1, and4.1nullS,S being a beam spacing in mm between central axes of the three electron beams at the main lens, and T being an outside diameter in mm of a neck portion of a vacuum envelope housing the in-line electron gun.

摘要翻译： 一种装有直列式电子枪的彩色阴极射线管，包括三个阴极，用于将荧光屏上的串联排列的三个电子束和用于将三个电子束聚焦在荧光屏上的主透镜。 主透镜包括第一主透镜电极和第二主透镜电极，该第一主透镜电极和第二主透镜电极在管的轴线方向上以间隔开的关系布置，并且施加有不同的电压。 第一主透镜电极和第二主透镜电极中的每一个具有在其相对端处与三个电子束共同的单个开口，并且第一主透镜电极和第二主透镜电极中的至少一个具有三个用于电子束通过的孔， 从相对端返回，其中T和S在满足以下不等式的区域中具有值，<段落lvl =“0”> 2S + 14.6 <= T <= 28.1， / in-line-formula> <段落lvl =“0”> 4.1 <= S， S是三束电子束的中心轴之间的光束间距 在主透镜上，T是容纳直列式电子枪的真空外壳的颈部的外径（mm）。

公开(公告)号：US6118878A

公开(公告)日：2000-09-12

申请号：US968873

申请日：1997-11-05

申请人： Owen Jones

发明人： Owen Jones

IPC分类号： A61F11/14 ,  G10K11/178 ,  H03B29/00 ,  A61F11/06

CPC分类号： G10K11/178 ,  G10K11/1782 ,  G10K11/1788 ,  A61F2011/145 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3011 ,  G10K2210/3013 ,  G10K2210/3019 ,  G10K2210/3028 ,  G10K2210/3056 ,  G10K2210/3214 ,  G10K2210/503

摘要： An active noise cancellation system includes a series of features for more effective cancellation, greater reliability, and improved stability. A particular feature adapted for headset systems includes locating a residual microphone radially offset from the center of a sound generator to detect a signal more similar to that incident upon the eardrum of the user. In addition, an open back headset design includes perforations on the side of the headset instead of the back, so that the perforations are less susceptible to inadvertent blockage. The system also includes a mechanism for detecting changes in the acoustic characteristics of the environment that may be caused, for example, by pressure exerted upon the earpieces, and that may destabilize the cancellation system. The system automatically responds to such changes, for example, by reducing the gain or the frequency response of the system to preserve stability. The system further includes other methods for detecting imminent instability and compensating, such as detecting the onset of signals within enhancement frequencies characteristic of the onset of instability, and adjusting the gain or frequency response of the system or suppressing the enhanced signals. The system further includes a mechanism for conserving battery life by turning the system off when sound levels are low, or adjusting the power supply to the system to correspond to the current power requirements of the system.

摘要翻译： 主动噪声消除系统包括一系列功能，用于更有效的消除，更高的可靠性和更好的稳定性。 适用于耳机系统的特定特征包括将距离声发生器中心径向偏移的剩余麦克风定位成检测更类似于在用户鼓膜上入射的信号的信号。 此外，开放式耳机设计包括耳机侧面的穿孔而不是背部，使得穿孔不易受到意外的堵塞。 该系统还包括用于检测可能由例如通过施加在听筒上的压力引起的环境的声学特性变化的机构，并且可能使取消系统不稳定。 系统自动响应这种变化，例如，通过减小系统的增益或频率响应来保持稳定性。 该系统还包括用于检测即将发生的不稳定性和补偿的其它方法，例如检测不稳定性开始特征的增强频率内的信号的开始，以及调整系统的增益或频率响应或抑制增强的信号。 该系统还包括一个机构，用于通过在声级较低时关闭系统来节省电池寿命，或者调整系统的电源以对应于系统的当前功率需求。

公开(公告)号：US5832095A

公开(公告)日：1998-11-03

申请号：US731788

申请日：1996-10-18

申请人： Mark A. Daniels

发明人： Mark A. Daniels

IPC分类号： F01N1/00 ,  F16L55/04 ,  F24F13/02 ,  G10K11/16 ,  G10K11/178 ,  H03B29/00 ,  A61F11/06

CPC分类号： G10K11/1784 ,  G10K2210/1053 ,  G10K2210/1082 ,  G10K2210/112 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3045 ,  G10K2210/3049 ,  G10K2210/503

摘要： Two microphones spaced along a duct of an air conditioning system provide inputs to circuitry whereby the noise being generated is distinguished from reflected noise. The circuitry imposes a time delay corresponding to the time required for generated noise to pass from the upstream microphone to a canceling speaker. The canceling speaker is driven by the circuitry, subject to the time delay, such that noise at the speaker is canceled by the appropriately driven speaker. In a preferred embodiment movement of the speaker is sensed whereby the actual sound being produced can be compared with the sound required by the canceling speaker driving signal.

摘要翻译： 沿着空调系统的管道间隔开的两个麦克风向电路提供输入，由此产生的噪声与反射的噪声区分开。 该电路施加与所产生的噪声从上游麦克风传递到消除扬声器所需的时间相对应的时间延迟。 取消扬声器由电路驱动，受时间延迟，使得扬声器的噪声被适当驱动的扬声器取消。 在优选实施例中，感测到扬声器的运动，由此可以将正在产生的实际声音与取消扬声器驱动信号所需的声音进行比较。