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1. 发明授权

US11696063B2 Automatic active noise reduction (ANR) control to improve user interaction 有权
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
发明人： Somasundaram Meiyappan , Nathan A. Blagrove , Pepin Torres , Alaganandan Ganeshkumar
IPC分类号： H04R1/10 , G06F3/16 , G10L15/22 , H04R1/08 , G10L15/08
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.

2. 发明授权

US11430421B2 Adaptive null forming and echo cancellation for selective audio pick-up 有权
公开(公告)号：US11430421B2
公开(公告)日：2022-08-30
申请号：US16695536
申请日：2019-11-26
申请人： Bose Corporation
发明人： Jeremy Kemmerer , Alaganandan Ganeshkumar
IPC分类号： H04R3/00 , G10K11/16 , G10L21/0208 , G10L15/22 , G10L21/0216
摘要： Audio pickup systems and methods are provided to enhance an audio signal by removing noise components related to an acoustic environment. The systems and methods receive a primary signal and one or more reference signals from various microphones. Adaptive filtering and combining minimizes an energy content of a resulting output signal, e.g., to form a substantially null output when the system is in a static acoustic environment. When the system is a playback sound source, one or more echo cancellers may contribute to removing content from the output signal. A change in the acoustic environment, such as a new sound source, causes content in the output signal until the adaptive filtering adapts to the new environment. In some examples, a desired content such as a wake-up word is detected and adaptation is stopped.

3. 发明申请

US20220232310A1 WEARABLE AUDIO DEVICE WITH INNER MICROPHONE ADAPTIVE NOISE REDUCTION 有权
公开(公告)号：US20220232310A1
公开(公告)日：2022-07-21
申请号：US17714561
申请日：2022-04-06
申请人： Bose Corporation
发明人： Alaganandan Ganeshkumar
IPC分类号： H04R1/10 , G10K11/178
摘要： Various implementations include systems for processing inner microphone audio signals. In particular implementations, a system includes an external microphone configured to be acoustically coupled to an environment outside an car canal of a user; an inner microphone configured to be acoustically coupled to an environment inside the ear canal of the user; and an adaptive noise cancelation system configured to process an internal signal captured by the inner microphone and generate a noise reduced internal signal, wherein the noise reduced internal signal is adaptively generated in response to an external signal captured by the external microphone.

4. 发明授权

US11343607B2 Automatic active noise reduction (ANR) control to improve user interaction 有权
公开(公告)号：US11343607B2
公开(公告)日：2022-05-24
申请号：US16894280
申请日：2020-06-05
申请人： Bose Corporation
发明人： Somasundaram Meiyappan , Nathan A. Blagrove , Pepin Torres , Alaganandan Ganeshkumar
IPC分类号： H04R1/10 , G06F3/16 , G10L15/22 , H04R1/08 , G10L15/08
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.

5. 发明申请

US20220060812A1 WEARABLE AUDIO DEVICE WITH INNER MICROPHONE ADAPTIVE NOISE REDUCTION 有权
公开(公告)号：US20220060812A1
公开(公告)日：2022-02-24
申请号：US16999353
申请日：2020-08-21
申请人： Bose Corporation
发明人： Alaganandan Ganeshkumar
IPC分类号： H04R1/10 , G10K11/178
摘要： Various implementations include systems for processing inner microphone audio signals. In particular implementations, a system includes an external microphone configured to be acoustically coupled to an environment outside an ear canal of a user; an inner microphone configured to be acoustically coupled to an environment inside the ear canal of the user; and an adaptive noise cancelation system configured to process an internal signal captured by the inner microphone and generate a noise reduced internal signal, wherein the noise reduced internal signal is adaptively generated in response to an external signal captured by the external microphone.

6. 发明申请

US20200045403A1 AUDIO DEVICE WITH PRE-ADAPTATION 审中-公开
公开(公告)号：US20200045403A1
公开(公告)日：2020-02-06
申请号：US16056046
申请日：2018-08-06
申请人： Bose Corporation
发明人： Alaganandan Ganeshkumar , Ricardo Carreras
IPC分类号： H04R1/10 , H04R1/40 , H04R5/04 , G10L25/84 , G10L21/0224 , H04R3/00 , H04R29/00 , H04R5/033
摘要： An audio device with at least one microphone adapted to receive sound from a sound field and create an output, and a processing system that is responsive to the output of the microphone. The processing system is configured to use a signal processing algorithm to detect speech in the output, detect a predefined trigger event indicating a possible change in the sound field, and modify the signal processing algorithm upon the detection of the predefined trigger event.

7. 发明授权

US10424315B1 Audio signal processing for noise reduction 有权
公开(公告)号：US10424315B1
公开(公告)日：2019-09-24
申请号：US15925241
申请日：2018-03-19
申请人： BOSE CORPORATION
发明人： Alaganandan Ganeshkumar
IPC分类号： H04R1/10 , G10L21/02 , G10L25/84 , G10L21/0232 , G10L21/0208 , G10L25/51 , H04R3/00 , H03G5/16 , H04R1/40 , G10L25/21 , H04R5/033 , G10L21/0216
摘要： Audio device systems and methods are provided to enhance speech pick-up from a user. The systems and methods include a plurality of left signals and right signals from microphones coupled to left and right earpieces. Various of the signals are combined to provide a primary signal having enhanced acoustic response in the direction of a selected location, such as the user's mouth. Additionally, the left signals are combined to provide a left reference signal having reduced acoustic response from the selected location, and the right signals are combined to provide a right reference signal also having reduced acoustic response from the selected location. Each of the left and right reference signals are filtered to provide left and right noise estimates, respectively, and the left and right noise estimates are subtracted from the primary signal.

8. 发明申请

US20180033445A1 REDUCING CODEC NOISE IN ACOUSTIC DEVICES 有权
公开(公告)号：US20180033445A1
公开(公告)日：2018-02-01
申请号：US15225406
申请日：2016-08-01
申请人： Bose Corporation
发明人： Alaganandan Ganeshkumar
IPC分类号： G10L19/16 , H03G7/00 , G10L19/10
CPC分类号： G10L19/167 , G10L19/10 , G10L19/26 , G10L21/034 , H03G7/007 , H03G9/005 , H03M7/3046 , H04R5/033 , H04R25/554 , H04R2420/07
摘要： The technology described in this document can be embodied in a computer-implemented method that includes receiving, at a first acoustic device, a representation of an audio signal, and amplifying the representation of the audio signal by a first gain factor to generate an amplified input signal. The method also includes processing the amplified input signal by an audio codec that includes one or more processors to generate a processed signal that represents a portion of the audio signal to be output by a second acoustic device. The processed signal includes noise originating at the audio codec. The method further includes transmitting the processed signal to the second acoustic device.

9. 发明授权

US09191739B2 Active reduction of harmonic noise from multiple rotating devices 有权
标题翻译：主动降低多个旋转装置的谐波噪声
公开(公告)号：US09191739B2
公开(公告)日：2015-11-17
申请号：US13849856
申请日：2013-03-25
申请人： Bose Corporation
发明人： Alaganandan Ganeshkumar , Dennis D. Klug
IPC分类号： A61F11/06 , H04R3/00 , G10K11/178
CPC分类号： H04R3/002 , G10K11/178 , G10K11/17854 , G10K11/17883 , G10K2210/1282 , G10K2210/3028 , G10K2210/3032 , G10K2210/3054
摘要： A system and method for reducing noise caused by two or more rotating devices by taking in input signals with frequencies that are related to the rotation rates of the rotating devices, and causing one or more loudspeakers to produce sounds that are at about the same frequencies as the noise and of substantially opposite phase. There is a noise canceller associated with each rotating device. Each noise canceller includes a harmonic frequency computer that computes a harmonic frequency and provides the harmonic frequency to a harmonic sine wave generator that generates an output sine wave. Each nose canceller also has an adaptive filter that uses a sine wave to create a noise reduction signal that is used to drive one or more transducers with their outputs directed to reduce noise caused by the rotating devices. There is an overlap detector that compares the harmonic frequencies and, based on their proximity, alters the operation of one or more adaptive filters.
摘要翻译：一种用于通过接收具有与旋转装置的旋转速率相关的频率的输入信号来减少由两个或更多个旋转装置引起的噪声的系统和方法，并且使一个或多个扬声器产生与大约相同频率的声音噪声和基本相反的相位。每个旋转装置都有一个噪音消除器。每个噪声消除器包括一个谐波频率计算机，它计算谐波频率并将谐波频率提供给产生输出正弦波的谐波正弦波发生器。每个鼻子消除器还具有自适应滤波器，其使用正弦波来产生噪声降低信号，该信号用于驱动一个或多个换能器，其输出被引导以减少由旋转装置引起的噪声。存在重叠检测器，其比较谐波频率，并且基于它们的接近度改变一个或多个自适应滤波器的操作。

10. 发明申请

US20150010163A1 Active Reduction of Harmonic Noise from Multiple Noise Sources 有权
标题翻译：主动降低多个噪声源的谐波噪声
公开(公告)号：US20150010163A1
公开(公告)日：2015-01-08
申请号：US14494852
申请日：2014-09-24
申请人： Bose Corporation
发明人： Alaganandan Ganeshkumar , Dennis D. Klug
IPC分类号： H04R3/00
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/3028 , G10K2210/3032 , G10K2210/3054 , H04R3/002 , H04R2499/13
摘要： A system and method for reducing harmonic noise caused by two or more noise sources by causing one or more loudspeakers to produce sounds that are at about the same frequencies as the noise and of substantially opposite phase. There is a noise canceller associated with each noise source. Each noise canceller includes a harmonic sine wave generator that generates an output sine wave. Each noise canceller also has an adaptive filter that uses a sine wave to create a noise reduction signal that is used to drive one or more transducers with their outputs directed to reduce noise caused by the noise sources. There is an overlap detector that compares the harmonic frequencies and, based on their proximity, alters the operation of one or more adaptive filters.
摘要翻译：一种用于通过使一个或多个扬声器产生与噪声大致相同的频率和基本上相反的相位的声音来减少由两个或更多个噪声源引起的谐波噪声的系统和方法。每个噪声源都有一个噪声消除器。每个噪声消除器包括产生输出正弦波的谐波正弦波发生器。每个噪声消除器还具有自适应滤波器，其使用正弦波来产生噪声降低信号，该信号用于驱动一个或多个换能器，其输出被引导以减少由噪声源引起的噪声。存在重叠检测器，其比较谐波频率，并且基于它们的接近度改变一个或多个自适应滤波器的操作。

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