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1.发明授权公开(公告)号：US11875768B2
公开(公告)日：2024-01-16
申请号：US18149834
申请日：2023-01-04
Applicant: Bose Corporation
Inventor： Ole Mattis Nielsen , David J. Warkentin , Lei Cheng , Brandon Lee Olmos , Michael P. O'Connell
IPC: G10K11/178 , H04R1/10 , H04R3/00
CPC classification number: G10K11/1781 , H04R1/1083 , H04R3/002 , G10K2210/1081 , G10K2210/3026 , G10K2210/3056 , H04R2460/01
Abstract: Various aspects include a wearable audio device having active noise reduction (ANR). In some cases, an ANR system for a wearable audio device includes: a fixed filter that receives a signal from a feedback microphone and outputs a noise reduction signal, where the fixed filter is configured to provide ANR with a nominal loop gain; and a tunable filter that outputs an adjusted noise reduction signal by modulating the nominal loop gain in response to low frequency noise being detected in the noise reduction signal, where modulating the nominal loop gain includes reducing low frequency ANR performance.
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2.发明申请公开(公告)号：US20210280162A1
公开(公告)日：2021-09-09
申请号：US16811148
申请日：2020-03-06
Applicant: Bose Corporation
Inventor： Ole Mattis Nielsen , David J. Warkentin , Lei Cheng , Brandon Lee Olmos , Michael P. O'Connell
IPC: G10K11/178 , H04R1/10 , H04R3/00
Abstract: Various aspects include a wearable audio device having active noise reduction (ANR), where the ANR device includes: a feedback microphone; an electroacoustic transducer; and a feedback compensator configured to output a noise reduction signal to the electroacoustic transducer in response to a feedback signal from the feedback microphone, wherein the feedback compensator includes a tunable filter that modulates a loop gain in response to an adverse low frequency event being detected in the noise reduction signal outputted from the tunable filter, wherein the tunable filter is configured to maintain a substantially similar loop gain shape near a low frequency cross-over as the low frequency cross-over changes during loop gain modulation.
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公开(公告)号：US20200186115A1
公开(公告)日：2020-06-11
申请号：US16794765
申请日：2020-02-19
Applicant: Bose Corporation
Inventor： Shiufun Cheung , Zukui Song , David J. Warkentin
Abstract: The technology described herein can be embodied in a method for estimating a power spectral density of noise, the method including receiving an input signal representing audio captured using a microphone. The input signal includes a first portion that represents acoustic outputs from two or more audio sources, and a second portion that represents a noise component. The method also includes iteratively modifying a frequency domain representation of the input signal, such that the modified frequency domain representation represents a portion of the input signal in which effects due to the first portion are substantially reduced. The method further includes determining, from the modified frequency domain representation, an estimate of a power spectral density of the noise, and generating a control signal configured to adjust one or more gains of an acoustic transducer. The control signal is generated based on the estimate of the power spectral density of the noise.
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公开(公告)号：US20160091530A1
公开(公告)日：2016-03-31
申请号：US14957733
申请日：2015-12-03
Applicant: Bose Corporation
Inventor： Upendra Ummethala , David J. Warkentin
IPC: G01P21/00
CPC classification number: G01P21/00
Abstract: In an aspect, in general, a system and method compensate for a misalignment characteristic of one or more acceleration sensors fixed to a sprung mass of a vehicle, each acceleration sensor having a location on the vehicle and a desired orientation relative to the vehicle.
Abstract translation: 在一方面，一般来说，系统和方法补偿固定在车辆弹簧质量上的一个或多个加速度传感器的不对准特性，每个加速度传感器具有车辆上的位置和相对于车辆的期望取向。
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5.发明公开公开(公告)号：US20230144087A1
公开(公告)日：2023-05-11
申请号：US18149834
申请日：2023-01-04
Applicant: Bose Corporation
Inventor： Ole Mattis Nielsen , David J. Warkentin , Lei Cheng , Brandon Lee Olmos , Michael P. O'Connell
IPC: G10K11/178 , H04R1/10 , H04R3/00
CPC classification number: G10K11/1781 , H04R1/1083 , H04R3/002 , G10K2210/1081 , G10K2210/3026 , G10K2210/3056 , H04R2460/01
Abstract: Various aspects include a wearable audio device having active noise reduction (ANR). In some cases, an ANR system for a wearable audio device includes: a fixed filter that receives a signal from a feedback microphone and outputs a noise reduction signal, where the fixed filter is configured to provide ANR with a nominal loop gain; and a tunable filter that outputs an adjusted noise reduction signal by modulating the nominal loop gain in response to low frequency noise being detected in the noise reduction signal, where modulating the nominal loop gain includes reducing low frequency ANR performance.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11568849B2
公开(公告)日：2023-01-31
申请号：US17488509
申请日：2021-09-29
Applicant: Bose Corporation
Inventor： Ole Mattis Nielsen , David J. Warkentin , Lei Cheng , Brandon Lee Olmos , Michael P. O'Connell
IPC: G10K11/178 , H04R1/10 , H04R3/00
Abstract: Various aspects include a wearable audio device having active noise reduction (ANR), where the ANR device includes: a feedback microphone; an electroacoustic transducer; and a feedback compensator configured to output a noise reduction signal to the electroacoustic transducer in response to a feedback signal from the feedback microphone, wherein the feedback compensator includes a tunable filter that modulates a loop gain in response to an adverse low frequency event being detected in the noise reduction signal outputted from the tunable filter, wherein the tunable filter is configured to maintain a substantially similar loop gain shape near a low frequency cross-over as the low frequency cross-over changes during loop gain modulation.
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公开(公告)号：US10553195B2
公开(公告)日：2020-02-04
申请号：US15473889
申请日：2017-03-30
Applicant: Bose Corporation
Inventor： Michael O'Connell , Joseph H. Cattell , David J. Warkentin
IPC: G10K11/178 , H04R3/00 , H04R1/10
Abstract: The technology described in this document can be embodied in a method that includes receiving an input signal representing audio captured by one or more sensors of an active noise reduction (ANR) headphone, and generating, based on the input signal, a first signal by a compensator disposed in an ANR signal flow path. The method also includes determining one or more characteristics of the first signal, and selecting, based on the one or more characteristics of the first signal, a plurality of filter coefficients for a digital filter disposed in series with the compensator in the ANR signal flow path. The filter coefficients are selected in accordance with a target frequency response of the digital filter. The method further includes generating, by processing the input signal using the plurality of filter coefficients of the digital filter, a feedback control signal for an electroacoustic transducer of the ANR headphone.
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公开(公告)号：US20160379620A1
公开(公告)日：2016-12-29
申请号：US15212302
申请日：2016-07-18
Applicant: Bose Corporation
Inventor： David J. Warkentin , Ryan C. Struzik , Wade P. Torres , Paul T. Bender , David Easterbrook
IPC: G10K11/178
CPC classification number: G10K11/178 , G10K11/17857 , G10K11/17873 , G10K2210/1282 , G10K2210/30351 , G10K2210/3055 , G10K2210/3221 , G10K2210/3226 , H04R1/1083 , H04R2227/001 , H04R2410/01 , H04R2499/13
Abstract: A method and system for attenuating noise comprises identifying a location in an area at which sound emitted from one or more speakers has acoustic characteristics that are substantially similar in measure to corresponding acoustic characteristics of the emitted sound at a location approximated to be near an ear of an occupant of the area. A microphone, which may be a virtual microphone, is disposed at the identified location. The microphone detects sound at the identified location. In response to the sound detected by the microphone, the one or more speakers emit a noise-canceling audio signal adapted to attenuate one or more frequencies in the sound detected by the microphone.
Abstract translation: 用于衰减噪声的方法和系统包括识别在一个区域中的位置，在该区域中，从一个或多个扬声器发出的声音的声学特性基本上类似于在近似于靠近耳朵的耳朵处的发射声音的相应声学特性 该地区的乘客。 可以是虚拟麦克风的麦克风被布置在所识别的位置。 麦克风在识别的位置检测声音。 响应于由麦克风检测到的声音，一个或多个扬声器发出适于衰减由麦克风检测到的声音中的一个或多个频率的噪声消除音频信号。
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9.发明授权公开(公告)号：US12300209B2
公开(公告)日：2025-05-13
申请号：US18527736
申请日：2023-12-04
Applicant: Bose Corporation
Inventor： Ole Mattis Nielsen , David J. Warkentin , Lei Cheng , Brandon Lee Olmos , Michael P. O'Connell
IPC: G10K11/178 , H04R1/10 , H04R3/00
Abstract: Various aspects include a wearable audio device having active noise reduction (ANR). In some cases, a method for processing audio signals includes receiving a noise reduction signal configured to modify an audio signal and generate a noise reduced audio signal, the noise reduction signal having a nominal loop gain; and generating an adjusted noise reduction signal in response to a detected adverse low frequency event, the adjusted noise reduction signal having a modulated loop gain configured to reduce artifacts in the noise reduced audio signal.
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公开(公告)号：US11996078B2
公开(公告)日：2024-05-28
申请号：US17881982
申请日：2022-08-05
Applicant: Bose Corporation
Inventor： David J. Warkentin
IPC: G10K11/178
CPC classification number: G10K11/17853 , G10K2210/3026 , G10K2210/3027
Abstract: A playback audio signal is combined with a feedback signal from a feedback microphone to provide a first combined signal. The first combined signal is filtered with a feedback filter to provide a driver command signal. The driver command signal is provided to an acoustic transducer for transduction to acoustic energy. The first combined signal is compared with the feedback signal to detect a feedback instability based upon the comparison.
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