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公开(公告)号：US09934788B2
公开(公告)日：2018-04-03
申请号：US15225406
申请日：2016-08-01
Applicant: Bose Corporation
Inventor： Alaganandan Ganeshkumar
CPC classification number: G10L19/167 , G10L19/10 , G10L19/26 , G10L21/034 , H03G7/007 , H03G9/005 , H03M7/3046 , H04R5/033 , H04R25/554 , H04R2420/07
Abstract: 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.
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公开(公告)号：US20140286499A1
公开(公告)日：2014-09-25
申请号：US13849856
申请日：2013-03-25
Applicant: Bose Corporation
Inventor： Alaganandan Ganeshkumar , Dennis D. Klug
IPC: H04R3/00
CPC classification number: H04R3/002 , G10K11/178 , G10K11/17854 , G10K11/17883 , G10K2210/1282 , G10K2210/3028 , G10K2210/3032 , G10K2210/3054
Abstract: 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.
Abstract translation: 一种用于通过接收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。
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公开(公告)号：US20250048022A1
公开(公告)日：2025-02-06
申请号：US18925274
申请日：2024-10-24
Applicant: Bose Corporation
Inventor： Somasundaram Meiyappan , Nathan A. Blagrove , Pepin Torres , Alaganandan Ganeshkumar
Abstract: 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：US11889261B2
公开(公告)日：2024-01-30
申请号：US17495120
申请日：2021-10-06
Applicant: Bose Corporation
Inventor： Yang Liu , Alaganandan Ganeshkumar
Abstract: Various implementations include approaches for sound enhancement in far-field pickup. Certain implementations include a method of sound enhancement for a system including microphones for far-field pick up. The method can include: generating, using at least two microphones, a primary beam focused on a previously unknown desired signal look direction, the primary beam producing a primary signal configured to enhance the desired signal; generating, using at least two microphones, a reference beam focused on the desired signal look direction, the reference beam producing a reference signal configured to reject the desired signal; and removing, using at least one processor, components that correlate to the reference signal from the primary signal.
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公开(公告)号：US20230319497A1
公开(公告)日：2023-10-05
申请号：US18206418
申请日：2023-06-06
Applicant: Bose Corporation
Inventor： Douglas Warren Young , Nathan A. Blagrove , Rasmus Abildgren , Casper Stork Bonde , Alaganandan Ganeshkumar
CPC classification number: H04R29/005 , H04W4/38 , H04W76/14 , G10L25/21 , G10L25/51 , G10L25/78 , H04R1/406 , H04R3/005
Abstract: A system and method for selecting audio capture sensors of wearable devices in obtaining voice data. The method provides obtaining signals associated with the user's voice at first and second wearable devices, comparing energy levels of the first and second signals, and selecting one or more audio capture sensors based on the energy levels of each signal. Due to the symmetry of the acoustic energy produced by the user's voice to a first and second wearable device, any difference in energy level between the total energy obtained by the first wearable device and the total energy obtained by the second wearable device can be attributed solely to ambient noise. Thus, the device with the higher total energy has a lower signal-to-noise ratio and selection of an audio capture sensor of the other wearable device with a higher signal-to-noise ratio is provided to obtain voice data moving forward.
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Patent Agency Ranking
公开(公告)号：US11594240B2
公开(公告)日：2023-02-28
申请号：US16930557
申请日：2020-07-16
Applicant: Bose Corporation
Inventor： Alaganandan Ganeshkumar , Xiang-Ern Yeo , Mehmet Ergezer
IPC: G10L21/0364 , G10L21/0232 , H04R1/40 , H04R1/10 , G10L21/0216 , H04R5/033 , G10L21/0208 , H04R1/32 , H04R3/00
Abstract: A headphone, headphone system, and speech enhancing method is provided to enhance speech pick-up from the user of a headphone and includes receiving a plurality of signals from a set of microphones and generating a primary signal by array processing the microphone signals to steer a beam toward the user's mouth. A noise reference signal is also derived from one or more microphones via a delay-and-sum technique, and a voice estimate signal is generated by filtering the primary signal to remove components that are correlated to the noise reference signal.
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公开(公告)号：US11270696B2
公开(公告)日：2022-03-08
申请号：US16458537
申请日：2019-07-01
Applicant: Bose Corporation
Inventor： Ricardo Carreras , Alaganandan Ganeshkumar
IPC: G10L15/16 , G10L15/20 , H04R1/08 , G10L15/22 , G10L25/78 , G10L21/0216 , H04M9/08 , G10L15/08 , G10L21/0208
Abstract: 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 a wakeup word, and modify the signal processing algorithm that is used to detect the wakeup word if the sound field changes.
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公开(公告)号：US20210385571A1
公开(公告)日：2021-12-09
申请号：US17411005
申请日：2021-08-24
Applicant: Bose Corporation
Inventor： Somasundaram Meiyappan , Nathan A. Blagrove , Pepin Torres , Alaganandan Ganeshkumar
Abstract: 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：US20210076770A1
公开(公告)日：2021-03-18
申请号：US16571425
申请日：2019-09-16
Applicant: Bose Corporation
Inventor： Matthew Christopher Smith , Alaganandan Ganeshkumar , Thomas David Chambers , Richard Lionel Lanoue, III
Abstract: Various implementations include a wearable audio device for enhancing the acoustic response proximate a user, for example, in the direction of the user's mouth. In particular implementations, a wearable audio device includes: a head mount having: a crown portion for resting on a head of a user, and a brim extending from the crown portion in a forward-oriented direction; and a plurality of microphones coupled to the brim of the head mount.
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公开(公告)号：US10748549B2
公开(公告)日：2020-08-18
申请号：US16425529
申请日：2019-05-29
Applicant: Bose Corporation
Inventor： Alaganandan Ganeshkumar , Xiang-Ern Yeo , Mehmet Ergezer
IPC: G10L21/02 , G10L21/0232 , H04R1/40 , H04R1/10 , G10L21/0216 , H04R5/033 , G10L21/0208 , H04R1/32 , H04R3/00
Abstract: A headphone, headphone system, and speech enhancing method is provided to enhance speech pick-up from the user of a headphone and includes receiving a plurality of signals from a set of microphones and generating a primary signal by array processing the microphone signals to steer a beam toward the user's mouth. A noise reference signal is also derived from one or more microphones, and a voice estimate signal is generated by filtering the primary signal to remove components that are correlated to the noise reference signal.
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