公开(公告)号：US20120300954A1

公开(公告)日：2012-11-29

申请号：US13208319

申请日：2011-08-11

申请人： Chiung-Ching Ku

发明人： Chiung-Ching Ku

IPC分类号： H03B29/00

CPC分类号： G10K11/178 ,  G10K2210/109 ,  G10K2210/112 ,  G10K2210/3033 ,  G10K2210/3048 ,  G10K2210/502

摘要： A motor apparatus includes a motor, a speaker for generating a denoise sound wave according to a speaker driving signal to offset a noise generated by the motor, and a driving device including a memory for storing a noise characteristic information of the motor, a control circuit for determining a rotation speed and a rotation angle of the motor to generate a rotation information and generating a noise simulation information according to the rotation information and the noise characteristic information, a motor driver for driving the motor according to the rotation information, and an active denoise circuit including a synthesizer for generating an inverted noise simulation signal according to the noise simulation information, and a speaker driver for generating the speaker driving signal according to the inverted noise simulation signal.

摘要翻译： 电动机装置包括电动机，扬声器，用于根据扬声器驱动信号产生去噪声波，以抵消由电动机产生的噪声;以及驱动装置，包括用于存储电动机的噪声特性信息的存储器，控制电路 用于确定所述电动机的转速和旋转角度以产生旋转信息并根据所述旋转信息和所述噪声特性信息产生噪声模拟信息;马达驱动器，用于根据所述旋转信息驱动所述电动机;以及主动 包括用于根据噪声模拟信息产生反相噪声模拟信号的合成器的去噪电路，以及根据反相噪声模拟信号产生扬声器驱动信号的扬声器驱动器。

公开(公告)号：US07139400B2

公开(公告)日：2006-11-21

申请号：US10406964

申请日：2003-04-04

申请人： Philip Edward Arthur Stuart

发明人： Philip Edward Arthur Stuart

IPC分类号： H03B29/00

CPC分类号： G10K11/178 ,  G01H3/005 ,  G10K2210/1282 ,  G10K2210/30232 ,  G10K2210/3031 ,  G10K2210/3033 ,  G10K2210/3226 ,  G10K2210/502 ,  G10K2210/504

摘要： An active noise control system (100) and method compensates for changes in a microphone output to maintain accurate noise control. A calibration signal reflecting a desired microphone output is generated and stored in an active noise control module (106). During operation, the active noise control module (106) compares an actual microphone output signal with the calibration signal and compensates for any changes in the actual output signal before any noise compensation or cancellation function occurs.

摘要翻译： 主动噪声控制系统（100）和方法补偿麦克风输出的变化，以保持精确的噪声控制。 生成反映所需麦克风输出的校准信号并将其存储在有源噪声控制模块（106）中。 在操作期间，主动噪声控制模块（106）将实际的麦克风输出信号与校准信号进行比较，并在发生任何噪声补偿或消除功能之前补偿实际输出信号中的任何变化。

公开(公告)号：US5619020A

公开(公告)日：1997-04-08

申请号：US599642

申请日：1996-02-09

申请人： Owen Jones ,  Michael C. J. Trinder

发明人： Owen Jones ,  Michael C. J. Trinder

IPC分类号： F01N1/06 ,  G10K11/178

CPC分类号： F01N1/065 ,  G10K11/1788 ,  G10K2210/12822 ,  G10K2210/3011 ,  G10K2210/321 ,  G10K2210/3217 ,  G10K2210/3219 ,  G10K2210/3228 ,  G10K2210/502

摘要： A muffler for muffling noise in a fluid flow, such as exhaust gases from an internal combustion engine comprises a chamber, loudspeakers for injecting anti-noise into the chamber under the control of processing circuitry in dependence upon residual noise detected by a microphone. The gas flows from an inflow pipe to an outflow pipe past a radial aperture that produces an acoustic coupling between the chamber and the gas flow, to allow the anti-noise to mix with noise in the gas flow and produce noise cancellation. The coupling is so arranged that the chamber becomes pressurized by the gas flow, in use, so as to restrict hot gas flow through the chamber and thereby provide an essentially benign environment for the loudspeaker.

摘要翻译： 用于消除来自内燃机的废气的消声器的消音器包括一个室，用于根据麦克风检测到的残余噪声在处理电路的控制下将抗噪声注入到室内的扬声器。 气体从流入管道流过径流孔，径向孔径在腔室和气体流之间形成声耦合，以使抗噪声与气流中的噪声混合并产生噪声消除。 联接器被布置成使得室在使用中被气流加压，以便限制热气流通过室，从而为扬声器提供基本上良好的环境。