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公开(公告)号：US10224017B2
公开(公告)日：2019-03-05
申请号：US15498134
申请日：2017-04-26
发明人： Ming-Ran Lee , Ming-te Cheng , Ramasunder Krishnaswami , Liqun Na , Mingfeng Li
摘要： Method and apparatus are disclosed for active sound desensitization to tonal noise in a vehicle. An example vehicle includes an electric motor, a microphone, speakers, and an active sound desensitizer. The active sound desensitizer (a) randomizes channels of the speakers based on multiple uncorrelated broadband sound profiles, (b) determine upper and lower frequency band limits for a band-limited filter, (c) generate a desensitizing sound based on the upper and lower frequency band limits and the randomized channels, and (d) broadcast the desensitizing sound via the speakers.
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公开(公告)号：US10121464B2
公开(公告)日：2018-11-06
申请号：US14563109
申请日：2014-12-08
发明人： Ming-Ran Lee , Takeshi Abe , Ming-te Cheng , Frederick Wayne Vanhaaften , Liqun Na , Teik Lim , Mingfeng Li , Guohua Sun , Tao Feng
IPC分类号： G10K11/16 , G10K11/178
摘要： An active noise control (ANC) system includes a speaker and one or more processors. The one or more processors implement an adaptive subband filtered reference control algorithm that applies thresholds to reference and error feedback signal paths such that, in response to a series of broadband non-Gaussian impulsive reference signals indicative of road noise in the vehicle having an audible frequency range of 20 Hz to 20 kHz, weight coefficients defining an adaptive filter of the control algorithm converge and permit the ANC system to partially cancel the road noise via output of the speaker.
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公开(公告)号：US20190366854A1
公开(公告)日：2019-12-05
申请号：US15997532
申请日：2018-06-04
发明人： Xuemei Sun , Jami J. Miller , Christopher Wolf , Liqun Na
摘要： A vehicle includes a traction motor having resonance frequency zones, an inverter including switches arranged to drive the traction motor, and a controller. The controller operates the switches only within specified sets of carrier frequencies such that noise side hands corresponding to the carrier frequencies fall outside the resonance frequency zones.
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公开(公告)号：US09837065B2
公开(公告)日：2017-12-05
申请号：US14563199
申请日：2014-12-08
发明人： Ming-Ran Lee , Takeshi Abe , Ming-te Cheng , Frederick Wayne Vanhaaften , Liqun Na , Teik Lim , Mingfeng Li , Guohua Sun , Tao Feng
IPC分类号： G10K11/16 , G10K11/178
CPC分类号： G10K11/178 , G10K11/17854 , G10K11/17855 , G10K2210/12821 , G10K2210/3012 , G10K2210/3053
摘要： An active noise control (ANC) system includes a speaker and one or more processors programmed to implement a delayless subband filtered-x least mean square control algorithm. The algorithm includes a variable bandwidth discrete Fourier transform filter bank having a number of subbands such that the system, in response to a broadband white noise reference signal indicative of road noise in the vehicle, exhibits a uniform gain spectrum across a frequency range defined by the subbands and partially cancels the road noise via output of the speaker.
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5.发明申请Variable Bandwidth Delayless Subband Algorithm For Broadband Active Noise Control System 有权宽带有源噪声控制系统的可变带宽延迟子带算法公开(公告)号：US20160163305A1
公开(公告)日：2016-06-09
申请号：US14563199
申请日：2014-12-08
发明人： Ming-Ran Lee , Takeshi Abe , Ming-te Cheng , Frederick Wayne Vanhaaften , Liqun Na , Teik Lim , Mingfeng Li , Guohua Sun , Tao Feng
IPC分类号： G10K11/175
CPC分类号： G10K11/178 , G10K11/17854 , G10K11/17855 , G10K2210/12821 , G10K2210/3012 , G10K2210/3053
摘要： An active noise control (ANC) system includes a speaker and one or more processors programmed to implement a delayless subband filtered-x least mean square control algorithm. The algorithm includes a variable bandwidth discrete Fourier transform filter bank having a number of subbands such that the system, in response to a broadband white noise reference signal indicative of road noise in the vehicle, exhibits a uniform gain spectrum across a frequency range defined by the subbands and partially cancels the road noise via output of the speaker.
摘要翻译： 主动噪声控制（ANC）系统包括扬声器和被编程为实现无延迟子带滤波x最小均方控制算法的一个或多个处理器。 该算法包括具有多个子带的可变带宽离散付里叶变换滤波器组，使得系统响应于指示车辆中的道路噪声的宽带白噪声参考信号，在由 子带，并通过扬声器的输出部分地消除道路噪声。
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公开(公告)号：US10538169B2
公开(公告)日：2020-01-21
申请号：US15997532
申请日：2018-06-04
发明人： Xuemei Sun , Jami J. Miller , Christopher Wolf , Liqun Na
IPC分类号： B60L15/20 , H02P27/08 , B60L15/02 , B60L50/16 , H02M7/5387
摘要： A vehicle includes a traction motor having resonance frequency zones, an inverter including switches arranged to drive the traction motor, and a controller. The controller operates the switches only within specified sets of carrier frequencies such that noise side bands corresponding to the carrier frequencies fall outside the resonance frequency zones.
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公开(公告)号：US20180315413A1
公开(公告)日：2018-11-01
申请号：US15498134
申请日：2017-04-26
发明人： Ming-Ran Lee , Ming-te Cheng , Ramasunder Krishnaswami , Liqun Na , Mingfeng Li
IPC分类号： G10K11/178 , H04R3/04 , H04R3/12 , B60L1/00
CPC分类号： G10K11/178 , B60L1/00 , B60L2270/00 , G10K11/175 , G10K2210/1282 , G10K2210/3028 , G10K2210/3044 , H04R3/00 , H04R3/12 , H04R2410/05 , H04R2499/13
摘要： Method and apparatus are disclosed for active sound desensitization to tonal noise in a vehicle. An example vehicle includes an electric motor, a microphone, speakers, and an active sound desensitizer. The active sound desensitizer (a) randomizes channels of the speakers based on multiple uncorrelated broadband sound profiles, (b) determine upper and lower frequency band limits for a band-limited filter, (c) generate a desensitizing sound based on the upper and lower frequency band limits and the randomized channels, and (d) broadcast the desensitizing sound via the speakers.
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8.发明申请Subband Algorithm With Threshold For Robust Broadband Active Noise Control System 审中-公开具有强大宽带主动噪声控制系统阈值的子带算法公开(公告)号：US20160163304A1
公开(公告)日：2016-06-09
申请号：US14563109
申请日：2014-12-08
发明人： Ming-Ran Lee , Takeshi Abe , Ming-te Cheng , Frederick Wayne Vanhaaften , Liqun Na , Teik Lim , Mingfeng Li , Guohua Sun , Tao Feng
IPC分类号： G10K11/175
CPC分类号： G10K11/1781 , G10K11/17854 , G10K11/17879 , G10K2210/12821 , G10K2210/3028 , G10K2210/3218
摘要： An active noise control (ANC) system includes a speaker and one or more processors. The one or more processors implement an adaptive subband filtered reference control algorithm that applies thresholds to reference and error feedback signal paths such that, in response to a series of broadband non-Gaussian impulsive reference signals indicative of road noise in the vehicle having an audible frequency range of 20 Hz to 20 kHz, weight coefficients defining an adaptive filter of the control algorithm converge and permit the ANC system to partially cancel the road noise via output of the speaker.
摘要翻译： 主动噪声控制（ANC）系统包括扬声器和一个或多个处理器。 一个或多个处理器实现自适应子带滤波参考控制算法，其将参考和误差反馈信号路径施加阈值，使得响应于一系列宽带非高斯脉冲参考信号，其指示车辆中具有可听频率的道路噪声 范围为20Hz至20kHz，限定控制算法的自适应滤波器的权重系数收敛并且允许ANC系统通过扬声器的输出部分地消除道路噪声。
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