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公开(公告)号：US09953626B2
公开(公告)日：2018-04-24
申请号：US14451715
申请日：2014-08-05
申请人： Bose Corporation
IPC分类号： G10K11/178 , H04R3/00 , H04R1/10
CPC分类号： G10K11/178 , G10K2210/1081 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/3036 , G10K2210/3055 , G10K2210/3056 , H04R1/1008 , H04R1/1083 , H04R3/002 , H04R2460/01 , H04R2460/05
摘要： In an active noise reducing headphone, a signal processor applies filters and control gains of both the feed-forward and feedback active noise cancellation signal paths. The signal processor is configured to apply first feed-forward filters to the feed-forward signal path and apply first feedback filters to the feedback signal path during a first operating mode providing effective cancellation of ambient sound, and to apply second feed-forward filters to the feed-forward signal path during a second operating mode providing active hear-through of ambient sounds with ambient naturalness.
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公开(公告)号：US20060029212A1
公开(公告)日：2006-02-09
申请号：US11250035
申请日：2005-10-13
申请人： Shannon Short , William Hartselle , Vernon Meadows
发明人： Shannon Short , William Hartselle , Vernon Meadows
IPC分类号： H04M1/00
CPC分类号： G10K11/1784 , G10K11/178 , G10K2210/1081 , G10K2210/3036 , G10K2210/3045 , H04M1/6008 , H04R3/002 , H04R3/005
摘要： A system and method for reducing or entirely canceling background or ambient noise from a voice transmission from a communications device. A communications device, such as a mobile telephone, is configured with an ambient noise compensation signal generator that is connected between a microphone and a mixer. The original output of the microphone and a compensation signal generated by the ambient noise compensation signal generator are mixed together prior to being passed to a transmitter. In one embodiment a buffer is provided between the microphone and the mixer to help synchronize the timing of the signals to be mixed. In another embodiment a second microphone is employed to detect ambient noise.
摘要翻译： 一种用于从通信设备减少或完全消除来自语音传输的背景或环境噪声的系统和方法。 诸如移动电话的通信设备被配置有连接在麦克风和混频器之间的环境噪声补偿信号发生器。 麦克风的原始输出和由环境噪声补偿信号发生器产生的补偿信号在传送到发射机之前混合在一起。 在一个实施例中，在麦克风和混频器之间提供缓冲器以帮助同步要混合的信号的定时。 在另一个实施例中，使用第二麦克风来检测环境噪声。
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公开(公告)号：US06978010B1
公开(公告)日：2005-12-20
申请号：US10101715
申请日：2002-03-21
CPC分类号： G10K11/1784 , G10K11/178 , G10K2210/1081 , G10K2210/3036 , G10K2210/3045 , H04M1/6008 , H04R3/002 , H04R3/005
摘要： A system and method for reducing or entirely canceling background or ambient noise from a voice transmission from a communications device. A communications device, such as a mobile telephone, is configured with an ambient noise compensation signal generator that is connected between a microphone and a mixer. The original output of the microphone and a compensation signal generated by the ambient noise compensation signal generator are mixed together prior to being passed to a transmitter. In one embodiment a buffer is provided between the microphone and the mixer to help synchronize the timing of the signals to be mixed. In another embodiment a second microphone is employed to detect ambient noise.
摘要翻译： 一种用于从通信设备减少或完全消除来自语音传输的背景或环境噪声的系统和方法。 诸如移动电话的通信设备被配置有连接在麦克风和混频器之间的环境噪声补偿信号发生器。 麦克风的原始输出和由环境噪声补偿信号发生器产生的补偿信号在传送到发射机之前混合在一起。 在一个实施例中，在麦克风和混频器之间提供缓冲器以帮助同步要混合的信号的定时。 在另一个实施例中，使用第二麦克风来检测环境噪声。
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公开(公告)号：US5617479A
公开(公告)日：1997-04-01
申请号：US571281
申请日：1995-12-12
申请人： Stephen Hildebrand , Ziqiang Hu
发明人： Stephen Hildebrand , Ziqiang Hu
IPC分类号： G10K11/178 , H01F27/02 , H01F27/33 , G10K11/16
CPC分类号： H01F27/33 , G10K11/1786 , G10K11/1788 , G10K2210/106 , G10K2210/1082 , G10K2210/119 , G10K2210/125 , G10K2210/1291 , G10K2210/3016 , G10K2210/3027 , G10K2210/3036 , G10K2210/3042 , G10K2210/3046 , G10K2210/3212 , G10K2210/3214 , G10K2210/3216 , G10K2210/3219 , G10K2210/3229 , G10K2210/32291 , G10K2210/501
摘要： The present invention relates generally to global noise or sound control and, more particularly, to the control or sound radiated from stationary induction apparatus such as power transformers and shunt reactors by use of active enclosures and active panels. The purpose of the invention is to markedly reduce the radiation of sound from the machine to all observation points in the surrounding field with a very lightweight, compact, non-airtight structure which does not impair maintenance or repair of the machine.
摘要翻译： 本发明一般涉及全球噪声或声音控制，更具体地，涉及通过使用有源外壳和主动面板从诸如电力变压器和分流电抗器的固定感应装置辐射的控制或声音。 本发明的目的是以非常轻巧，紧凑，非气密的结构显着地减少声音从机器到周围场所的所有观测点的辐射，这不会损害机器的维护或修理。
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5.发明授权Silencer attenuating a noise from a noise source to be ventilated and a method for active control of its noise attenuation system 失效消声器将来自噪声源的噪声衰减为通风，以及用于主动控制其噪声衰减系统的方法
公开(公告)号：US5253486A
公开(公告)日：1993-10-19
申请号：US692359
申请日：1991-04-26
CPC分类号： F25D29/00 , G10K11/1784 , F25B2500/12 , F25D2201/30 , G10K2210/1054 , G10K2210/109 , G10K2210/3028 , G10K2210/3036 , G10K2210/3045
摘要： A silencer attenuating a noise from a noise source to be ventilated of this invention comprises a machine compartment with a one-dimensional duct configuration whose sectional dimension is sufficiently small in comparison with the wavelength of the noise to be attenuated, a compressor and/or other machinery disposed within the machine compartment, an opening for dissipation of heat as disposed in a wall of the machine compartment and opening in a direction generally perpendicular to the direction of advance of sound within the machine compartment, a vibration pickup for detecting the vibration of the machinery corresponding to the output noise of the machinery, and a control circuit for processing output signals from the vibration pickup to drive a sound generator such as a speaker. The sound generator outputs a controlling signal dependent on the machine noise to cancel the noise about to emerge from the machine compartment.
摘要翻译： 一种消音器，其能够衰减本发明通风的噪声源的噪声，其特征在于：具有一维管道结构的机舱，其截面尺寸与要衰减的噪声的波长相比足够小，压缩机和/或其它 设置在机器间内的机械，设置在机器隔室的壁上并散开热量的开口，并且在与机舱内的声音方向大致垂直的方向上开口，用于检测机械室内的振动的振动拾取器 对应于机械的输出噪声的机械，以及用于处理来自振动拾取器的输出信号以驱动诸如扬声器的声音发生器的控制电路。 声音发生器输出取决于机器噪音的控制信号，以消除要从机器舱出来的噪音。
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公开(公告)号：US20240221715A1
公开(公告)日：2024-07-04
申请号：US18090427
申请日：2022-12-28
申请人： Intel Corporation
发明人： Jaison FERNANDEZ , Sumod CHERUKKATE , Tarakesava Reddy KOKI , Adam KUPRYJANOW , Srikanth POTLURI
IPC分类号： G10K11/178 , H04R1/10
CPC分类号： G10K11/17823 , G10K11/17873 , H04R1/1083 , G10K2210/1081 , G10K2210/30231 , G10K2210/3027 , G10K2210/3036 , H04R2460/01
摘要： This disclosure describes systems, methods, and devices related to noise suppression processing. A device may establish a connection to a connected device. The device may calculate a first SNR of a first sample of a first audio stream from the connected device. The device may calculate a second SNR of a second sample of a second audio stream from a first device. The device may compare a difference of the first SNR and the second SNR to a Delta SNR threshold. The device may detect ambient noise level conditions and the Delta SNR threshold is based on the ambient noise level conditions. The device may determine whether to apply system-level preprocessing based on the comparison.
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公开(公告)号：US08472641B2
公开(公告)日：2013-06-25
申请号：US12246348
申请日：2008-10-06
IPC分类号： H04B15/00
CPC分类号： G10K11/1784 , G10K11/178 , G10K2210/1081 , G10K2210/3036 , G10K2210/3045 , H04M1/6008 , H04R3/002 , H04R3/005
摘要： A system and method for reducing or entirely canceling background or ambient noise from a voice transmission from a communications device. A communications device, such as a mobile telephone, is configured with an ambient noise compensation signal generator that is connected between a microphone and a mixer. The original output of the microphone and a compensation signal generated by the ambient noise compensation signal generator are mixed together prior to being passed to a transmitter. In one embodiment a buffer is provided between the microphone and the mixer to help synchronize the timing of the signals to be mixed. In another embodiment a second microphone is employed to detect ambient noise.
摘要翻译： 一种用于从通信设备减少或完全消除来自语音传输的背景或环境噪声的系统和方法。 诸如移动电话的通信设备被配置有连接在麦克风和混频器之间的环境噪声补偿信号发生器。 麦克风的原始输出和由环境噪声补偿信号发生器产生的补偿信号在传送到发射机之前混合在一起。 在一个实施例中，在麦克风和混频器之间提供缓冲器以帮助同步要混合的信号的定时。 在另一个实施例中，使用第二麦克风来检测环境噪声。
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公开(公告)号：US20090034755A1
公开(公告)日：2009-02-05
申请号：US12246348
申请日：2008-10-06
CPC分类号： G10K11/1784 , G10K11/178 , G10K2210/1081 , G10K2210/3036 , G10K2210/3045 , H04M1/6008 , H04R3/002 , H04R3/005
摘要： A system and method for reducing or entirely canceling background or ambient noise from a voice transmission from a communications device. A communications device, such as a mobile telephone, is configured with an ambient noise compensation signal generator that is connected between a microphone and a mixer. The original output of the microphone and a compensation signal generated by the ambient noise compensation signal generator are mixed together prior to being passed to a transmitter. In one embodiment a buffer is provided between the microphone and the mixer to help synchronize the timing of the signals to be mixed. In another embodiment a second microphone is employed to detect ambient noise.
摘要翻译： 一种用于从通信设备减少或完全消除来自语音传输的背景或环境噪声的系统和方法。 诸如移动电话的通信设备被配置有连接在麦克风和混频器之间的环境噪声补偿信号发生器。 麦克风的原始输出和由环境噪声补偿信号发生器产生的补偿信号在传送到发射机之前混合在一起。 在一个实施例中，在麦克风和混频器之间提供缓冲器以帮助同步要混合的信号的定时。 在另一个实施例中，使用第二麦克风来检测环境噪声。
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9.发明授权
公开(公告)号：US5748750A
公开(公告)日：1998-05-05
申请号：US872397
申请日：1997-06-10
IPC分类号： G10K11/178 , A61F11/06
CPC分类号： G10K11/1786 , G10K2210/112 , G10K2210/3012 , G10K2210/3026 , G10K2210/3027 , G10K2210/3036 , G10K2210/3219
摘要： An active noise control system for effective control of higher order modes of noise propagation within a duct is disclosed. A plurality of error sensors is disposed within an error sensors plane, which plane is perpendicular to the longitudinal axis of the duct. The disclosed process and apparatus minimizes the mean square distance between the points of the area associated to each error sensor. The resulting arrangement of errors sensors optimizes the overall area that the error sensors can control and consequently the global efficiency of the controlling system.
摘要翻译： 公开了一种用于有效控制管道内高阶模式噪声传播的主动噪声控制系统。 多个误差传感器设置在误差传感器平面内，该平面垂直于管道的纵向轴线。 所公开的方法和装置使与每个误差传感器相关联的区域的点之间的均方距离最小化。 由此产生的错误传感器布置可以优化误差传感器可以控制的总体面积，从而优化控制系统的全局效率。
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公开(公告)号：US5418858A
公开(公告)日：1995-05-23
申请号：US273377
申请日：1994-07-11
申请人： Rahmat Shoureshi
发明人： Rahmat Shoureshi
IPC分类号： B60G17/018 , B60G17/0195 , B60K5/00 , B60K5/12 , B62D33/06 , F16F15/02 , G10K11/178 , G10K11/16
CPC分类号： B60G17/018 , B60G17/0195 , B60K5/00 , B62D33/0608 , F16F15/02 , G10K11/1786 , B60G2204/16 , B60G2204/18 , B60G2400/102 , B60G2600/182 , B60G2600/184 , B60G2600/1871 , B60G2600/1877 , B60K5/1216 , G10K2210/106 , G10K2210/1282 , G10K2210/129 , G10K2210/1291 , G10K2210/3012 , G10K2210/3024 , G10K2210/3029 , G10K2210/30351 , G10K2210/3036 , G10K2210/3042 , G10K2210/3046 , G10K2210/3211 , G10K2210/3216 , G10K2210/3221 , G10K2210/501 , G10K2210/509
摘要： A generalized minimum variance type of control operates on combined optimal and self-tuning control theorems, and is applicable to the design of active, semi-active, and hybrid vibration control systems. The system operates in a multiple-input/multiple-output manner, so when both noise and vibration are important, e.g. interior of a vehicle, the resulting nulling signal will be based on diminishing both vibrations and noise. The system operates by directly nulling primary vibrations, in an active mode, and/or by developing a variable bandwidth mechanical filter, in a semi-active mode, and applying nulling signals accordingly to the vibration source. Artificial intelligence is incorporated into the system to learn on-line the dynamics of the system, e.g. vehicle modal parameters. This intelligence is used to modify decision making in the system, based on results of past performance, without reprogramming or tuning of the system. The system incorporates digital electronic circuitry to convert acceleration and/or audio signals into proper format for the software logic residing in a microprocessor chip. Synchronizing signal is not needed. Hardware used includes a state of the art high power microprocessor, capable of handling sixteen sensory input signals and generating eight output signals. Controlling noise and vibration control in a vehicle, four audio signals from the driver, passenger, and back seat areas, and accelerometer signals from different seat tracks, the steering column, and the floor pan can be input to the microprocessor. Resulting control signals can be two for adjustable front engine mounts, and six for the adjustable body (cradle) mounts. Software resident in memory includes a first program to perform a modal extraction of vibration and/or noise from the sensors, to perform a minimum variance calculation, then to perform an intelligent control calculation based on recorded past performance and on fuzzy logic compensation. Output signals generated and applied to actuators minimize and/or filter the vibration or noise.
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