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公开(公告)号：US20230317048A1
公开(公告)日：2023-10-05
申请号：US18332746
申请日：2023-06-11
发明人： Le XIAO , Jinbo ZHENG , Chengqian ZHANG , Fengyun LIAO , Xin QI
IPC分类号： G10K11/178 , H04R1/40 , H04R3/00 , H04R1/10
CPC分类号： G10K11/17823 , H04R1/406 , H04R3/005 , G10K11/17873 , H04R1/1008 , H04R1/105 , H04R1/1066 , G10K2210/3023 , H04R2460/13 , G10K2210/3056 , G10K2210/1081 , H04R2460/09 , H04R2460/11
摘要： The present disclosure provides an acoustic device including a microphone array, a processor, and at least one speaker. The microphone array may be configured to acquire an environmental noise. The processor may be configured to estimate a sound field at a target spatial position using the microphone array. The target spatial position may be closer to an ear canal of a user than each microphone in the microphone array. The processor may be configured to generate a noise reduction signal based on the environmental noise and the sound field estimation of the target spatial position. The at least one speaker may be configured to output a target signal based on the noise reduction signal. The target signal may be used to reduce the environmental noise. The microphone array may be arranged in a target area to minimize an interference signal from the at least one speaker to the microphone array.
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公开(公告)号：US11696063B2
公开(公告)日：2023-07-04
申请号：US17411005
申请日：2021-08-24
申请人： Bose Corporation
CPC分类号： H04R1/1083 , G06F3/167 , G10L15/22 , H04R1/08 , G10K2210/1081 , G10K2210/1082 , G10K2210/3023 , G10L2015/088
摘要： A method performed by a wearable audio output device worn by a user is provided for controlling external noise attenuated by wearable audio output device. A speech is detected from a user wearing the wearable audio output device, wherein the audio output device has active noise reduction turned on. It is determined, based on the detecting, that the user desires to speak to a subject in the vicinity of the user. In response to the determining, a level of noise reduction is reduced to enable the user to hear sounds external to the audio output device. It is determined that the user desires to speak to the subject by detecting at least one condition of a plurality of conditions.
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公开(公告)号：US11688381B2
公开(公告)日：2023-06-27
申请号：US17978354
申请日：2022-11-01
申请人： Jiangnan University
发明人： Yaping Ma , Yegui Xiao , Dinghui Wu , Linbo Xie , Xin Wang
IPC分类号： G10K11/178
CPC分类号： G10K11/17817 , G10K11/17853 , G10K11/17879 , G10K2210/3012 , G10K2210/3023 , G10K2210/3026 , G10K2210/3035
摘要： The present disclosure presents a feedback active noise control system and strategy with online secondary-path modeling, and belongs to the technical field of active noise control. The linear prediction subsystem takes the residual noise as its input and separates the remaining sinusoidal noise from the broadband noise. The remaining sinusoidal noise is used effectively not only to update the controller but also to scale the auxiliary noise, while the broadband noise serves as a desired input of online secondary-path modeling subsystem. In this way, the coupling between the controller and the online secondary-path modeling subsystem is significantly mitigated, leading to both faster convergence and improved noise reduction performance. A practical scheme for refreshing the entire system is also developed to enhance its robustness against even abrupt changes with the secondary path or the primary noise. The present disclosure enhances the applicability of feedback active noise control in practical applications.
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公开(公告)号：US5978824A
公开(公告)日：1999-11-02
申请号：US015525
申请日：1998-01-29
申请人： Shigeji Ikeda
发明人： Shigeji Ikeda
CPC分类号： G10K11/1784 , G10K2210/108 , G10K2210/3012 , G10K2210/3023 , G10K2210/3045 , G10K2210/3054 , G10L2021/02165 , G10L21/0216
摘要： A noise canceler of the present invention includes a signal-to-noise power ratio estimator to which a main signal and a reference signal are input. The estimator 10 estimates the sinal-to-noise power ratio of the main signal from the mean power of a desired signal contained in the main siganl and a mean power of a noise signal also contained in the main signal. In addition, the estimator estimates the signal-to-noise power ratio of the reference signal from the mean power of a desired signal contained in the reference signal and the mean power of a noise singal also contained in the reference signal. An adptive filter for estimating the noise signal of the main signal has its step size for coefficient updating controlled in accordance with the estimated signal-to-noise power ratio of the noise signal. On the other hand, an adptive filter for estimating the desired signal of the reference signal has its step size for coefficient updating controlled in accordance with the estimated signal-to-noise power ratio of the reference signal. Delay circuits are provided for compensating for a delay ascribable to a power averaging procedure which a signal-to-noise power ratio estimator executes to calculate the estimated siganl-to-noise power ratios.
摘要翻译： 本发明的噪声消除器包括输入主信号和参考信号的信噪比功率比估计器。 估计器10从主信号中包含的期望信号的平均功率和主信号中也包含的噪声信号的平均功率估计主信号的信噪比功率比。 此外，估计器从参考信号中包含的期望信号的平均功率和噪声信号的平均功率估计参考信号的信噪比功率比也包含在参考信号中。 用于估计主信号的噪声信号的适应滤波器具有根据噪声信号的估计信噪比功率比来控制系数更新的步长。 另一方面，用于估计参考信号的期望信号的适应滤波器具有根据参考信号的估计的信噪比功率比来控制系数更新的步长。 延迟电路被提供用于补偿归因于功率平均过程的延迟，信号噪声功率比估计器执行以计算估计的信噪比功率比。
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公开(公告)号：US20240233701A9
公开(公告)日：2024-07-11
申请号：US17971377
申请日：2022-10-21
发明人： David TRUMPY , Santosh ADARI
IPC分类号： G10K11/178
CPC分类号： G10K11/17815 , G10K11/17817 , G10K11/17823 , G10K11/17825 , G10K11/17883 , G10K2210/12821 , G10K2210/3023 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/3044 , G10K2210/3055
摘要： In at least one embodiment, an active noise cancellation (ANC) system is provided. The ANC system includes at least one loudspeaker, at least one microphone, and a reference generator. The at least one loudspeaker projects anti-noise sound within a cabin of a vehicle based at least on an estimated reference signal and an anti-noise signal. The at least one microphone to provide a first error signal indicative of noise and the anti-noise sound within the cabin. The at least one filter controller programmed to receive the first error signal and the estimated reference signal; and to control at least one adaptive filter to generate the anti-noise signal based at least on the first error signal and the estimated reference signal. The reference generator is programmed to generate the estimated reference signal based at least on one of vehicle speed, temperature of a tire of the vehicle, or tire pressure.
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6.发明公开公开(公告)号：US20240177702A1
公开(公告)日：2024-05-30
申请号：US18234615
申请日：2023-08-16
IPC分类号： G10K11/178
CPC分类号： G10K11/17823 , G10K11/17873 , G10K2210/1081 , G10K2210/3023 , G10K2210/3027 , G10K2210/3028 , G10K2210/3032 , G10K2210/3057
摘要： Provided are a noise reduction method and apparatus, a test method and apparatus, an electronic device, and a storage medium, relating to the fields of acoustics and audio. The noise reduction method includes: obtaining an environmental noise and obtaining an environmental spectrum feature of the environmental noise; obtaining a spectrum feature-filter coefficient correspondence; obtaining a target spectrum feature unit from the spectrum feature-filter coefficient correspondence according to the environmental spectrum feature; obtaining a filter coefficient in a filter coefficient unit corresponding to the target spectrum feature unit in the spectrum feature-filter coefficient correspondence as an environmental filter coefficient; and generating noise reduction audio according to the environmental filter coefficient.
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公开(公告)号：US20240135911A1
公开(公告)日：2024-04-25
申请号：US17971377
申请日：2022-10-20
发明人： David TRUMPY , Santosh ADARI
IPC分类号： G10K11/178
CPC分类号： G10K11/17815 , G10K11/17817 , G10K11/17823 , G10K11/17825 , G10K11/17883 , G10K2210/12821 , G10K2210/3023 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/3044 , G10K2210/3055
摘要： In at least one embodiment, an active noise cancellation (ANC) system is provided. The ANC system includes at least one loudspeaker, at least one microphone, and a reference generator. The at least one loudspeaker projects anti-noise sound within a cabin of a vehicle based at least on an estimated reference signal and an anti-noise signal. The at least one microphone to provide a first error signal indicative of noise and the anti-noise sound within the cabin. The at least one filter controller programmed to receive the first error signal and the estimated reference signal; and to control at least one adaptive filter to generate the anti-noise signal based at least on the first error signal and the estimated reference signal. The reference generator is programmed to generate the estimated reference signal based at least on one of vehicle speed, temperature of a tire of the vehicle, or tire pressure.
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公开(公告)号：US20240078995A1
公开(公告)日：2024-03-07
申请号：US17929919
申请日：2022-09-06
申请人： Bose Corporation
发明人： Emery M. Ku
IPC分类号： G10K11/178 , H04R1/10
CPC分类号： G10K11/17854 , G10K11/17823 , G10K11/17827 , G10K11/1783 , G10K11/17881 , H04R1/1083 , G10K11/17825 , G10K2210/1081 , G10K2210/3023 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , H04R2460/01
摘要： An apparatus includes a noise reduction headphone comprising one or more microphones and an acoustic transducer, the one or more microphones configured to generate an input signal; and a controller comprising one or more processing devices, the controller configured to: process the input signal through one or more noise reduction filters to generate a noise-reduction signal, compare the input signal to an estimate of ambient noise to determine if the energy of the input signal is greater than the estimate of ambient noise, wherein if the energy of the input signal is greater than the estimate of ambient noise by a predetermined amount, a change in the noise reduction signal is suppressed; and generate an output signal, the output signal comprising, at least in part, the noise-reduction signal, wherein the acoustic transducer is configured to produce an acoustic output in accordance with the output signal.
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公开(公告)号：US11715451B2
公开(公告)日：2023-08-01
申请号：US17657743
申请日：2022-04-01
发明人： Le Xiao , Jinbo Zheng , Chengqian Zhang , Fengyun Liao , Xin Qi
IPC分类号： G10K11/178 , H04R1/40 , H04R3/00 , H04R1/10
CPC分类号： G10K11/17823 , G10K11/17873 , H04R1/105 , H04R1/1008 , H04R1/1066 , H04R1/406 , H04R3/005 , G10K2210/1081 , G10K2210/3023 , G10K2210/3056 , H04R2460/09 , H04R2460/11 , H04R2460/13
摘要： The present disclosure provides an acoustic device including a microphone array, a processor, and at least one speaker. The microphone array may be configured to acquire an environmental noise. The processor may be configured to estimate a sound field at a target spatial position using the microphone array. The target spatial position may be closer to an ear canal of a user than each microphone in the microphone array. The processor may be configured to generate a noise reduction signal based on the environmental noise and the sound field estimation of the target spatial position. The at least one speaker may be configured to output a target signal based on the noise reduction signal. The target signal may be used to reduce the environmental noise. The microphone array may be arranged in a target area to minimize an interference signal from the at least one speaker to the microphone array.
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公开(公告)号：US11682377B2
公开(公告)日：2023-06-20
申请号：US17686203
申请日：2022-03-03
发明人： Kyohei Kitazawa
IPC分类号： G10K11/178
CPC分类号： G10K11/17854 , G10K11/17823 , G10K11/17873 , G10K2210/3023 , G10K2210/3027 , G10K2210/3028
摘要： A sound processing apparatus includes a first microphone which acquires environmental sound, a second microphone which acquires sound of a noise source, and a CPU which causes the sound processing apparatus to function as a noise detection unit configured to generate a noise signal of the noise source according to a sound signal from the second microphone, the noise detection unit reducing sound other than noise of the noise source from the sound signal from the second microphone and generating the noise signal, and a noise reducing unit configured to reduce the noise of the noise included in a sound signal from the first microphone using the sound signal from the noise detection unit.
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