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30 条记录 (耗时 0.011 秒)

    DEVICE, SYSTEM AND METHOD OF NOISE CONTROL
    11.
    发明公开
    DEVICE, SYSTEM AND METHOD OF NOISE CONTROL 审中-公开
    设备，系统和方法噪声控制

    公开(公告)号：EP2707871A4

    公开(公告)日：2015-09-23

    申请号：EP12782754

    申请日：2012-05-10

    申请人： SILENTIUM LTD

    发明人： CHERKASSKY DANIEL ,  BARATH JOSSEF ,  RUBIN OFIRA

    IPC分类号： A61F11/06

    CPC分类号： G10K11/1786 ,  G10K11/178 ,  G10K2210/1282 ,  G10K2210/3014 ,  G10K2210/30231 ,  G10K2210/505

    摘要： Some demonstrative embodiments include devices, systems and methods of noise control. For example, a device may include a controller to control noise within a predefined noise-control zone, the controller is to receive a plurality of noise inputs representing acoustic noise at a plurality of predefined noise sensing locations, which are defined with respect to the predefined noise-control zone, to receive a plurality of residual-noise inputs representing acoustic residual-noise at a plurality of predefined residual-noise sensing locations, which are located within the predefined noise-control zone, to determine a noise control pattern, based on the plurality of noise inputs and the plurality of residual-noise inputs, and to output the noise control pattern to at least one acoustic transducer.

    Self-adaptive echo canceller capable of keeping a degree of cancellation substantially invariable even at a low incoming level
    16.
    发明公开
    Self-adaptive echo canceller capable of keeping a degree of cancellation substantially invariable even at a low incoming level 失效
    自适应回声消除器具有即使在低输入电平的补偿度基本上保持不变。

    公开(公告)号：EP0104660A2

    公开(公告)日：1984-04-04

    申请号：EP83109708.4

    申请日：1983-09-28

    申请人： NEC CORPORATION

    发明人： Ito, Yoshinori

    IPC分类号： H04B3/23

    CPC分类号： G10K11/178 ,  G10K2210/30351 ,  G10K2210/3045 ,  G10K2210/505 ,  H04B3/23

    摘要： In a self-adaptive echo canceller responsive to a receive-in signal and an echo signal resulting from the receive-in signal, a learning identification technique is implemented so as to exempt a send-out signal from the echo signal by successively varying an amount of modification (Δhj') represented by βeX, where represents a coefficient; e, a level of the send-out signal; and X, a level of the receive-in signal. A coefficient calculating circuit (28, 30, 35) calculates the coefficient from the factor and an incoming level (X) of the receive-in signal to determine the amount of modification. The coefficient is accompanied by a modifier given by 2X 2 /(K + X 2 ), where K represents a constant. The coefficient calculating circuit includes a unit (35) for calculating the modifier. The modifier may be multiplied by various factors of the amount of modification.

    SYSTEM AND METHOD FOR MITIGATING AUDIO FEEDBACK
    17.
    发明授权
    SYSTEM AND METHOD FOR MITIGATING AUDIO FEEDBACK 有权

    公开(公告)号：EP2978242B1

    公开(公告)日：2018-12-26

    申请号：EP15178142.4

    申请日：2015-07-23

    申请人： 2236008 Ontario Inc.

    发明人： PARANJPE, Shreyas Anand

    IPC分类号： H04M9/08 ,  H04R3/02

    CPC分类号： H04R3/02 ,  G10K11/178 ,  G10K2210/108 ,  G10K2210/1282 ,  G10K2210/3025 ,  G10K2210/505 ,  G10K2210/506 ,  G10L21/0232 ,  H04M9/082 ,  H04R2227/009 ,  H04R2499/13

    摘要： A system and method for mitigating audio feedback may calculate a smoothed frequency spectrum of an audio signal. Previously detected candidate feedback tones may be obtained. Candidate feedback tones may be determined responsive to a frequency spectrum of the audio signal, the smoothed frequency spectrum and the previously detected candidate feedback tones. One or more signal characteristics associated with the audio signal and feedback coefficients associated with the candidate feedback tones may be obtained. The feedback coefficients may be modified responsive to the one or more signal characteristics. Actionable feedback tones may be determined responsive to the associated feedback coefficients exceeding a respective feedback threshold. Feedback suppression coefficients associated with each of the determined actionable feedback tones may be generated and may be utilized to suppress the actionable feedback tones.

    Active noise control for vehicle door noise
    19.
    发明公开
    Active noise control for vehicle door noise 有权
    Aktives System zurUnterdrückungderGeräuscheeinerFahrzeugtür

    公开(公告)号：EP1363270A2

    公开(公告)日：2003-11-19

    申请号：EP03076295.9

    申请日：2003-05-01

    申请人： Siemens VDO Automotive Inc.

    发明人： Daly, Paul Desmond

    IPC分类号： G10K11/178

    CPC分类号： G10K11/178 ,  G10K2210/1282 ,  G10K2210/3225 ,  G10K2210/3229 ,  G10K2210/505 ,  G10K2210/51

    摘要： An active noise control system (100) and method modifies a noise made when a vehicle closure, such as a door, hood, or trunk, closes by detecting the closure's velocity and selecting a delay time and control noise amplitude appropriate for the velocity. By modifying the noise of a vehicle door closing, the system (100) can reduce the frequency and reverberation of the noise generated by the door, improving user perception of the vehicle itself.

    摘要翻译： 主动噪声控制系统（100）和方法通过检测关闭速度并选择延迟时间并控制与速度相适应的噪声振幅，来修改当诸如门，机罩或行李箱的车辆关闭时产生的噪音。 通过改变车门关闭的噪声，系统（100）可以减少由门产生的噪音的频率和混响，从而改善用户对车辆本身的感知。