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1. 发明授权

US11373668B2 Enhancement of audio from remote audio sources 有权
公开(公告)号：US11373668B2
公开(公告)日：2022-06-28
申请号：US16782610
申请日：2020-02-05
申请人： Bose Corporation
发明人： Carl Jensen , Andrew Todd Sabin , Andrew Jackson Stockton X , Daniel Ross Tengelsen , Marko Stamenovic , Wade P. Torres
IPC分类号： G10L21/0232 , G10L25/18 , H04R1/40 , H04R3/00 , H04R5/027 , H04S7/00 , G10L21/0216 , H04R3/04
摘要： An audio enhancement method includes receiving a first plurality of input signals representative of audio captured using an array of two or more sensors, the first plurality of input signals characterized by a first signal-to-noise ratio (SNR), with the audio being the signal-of-interest. The method also includes receiving a second input signal representative of the audio, the second input signal characterized by a second SNR. The second SNR is higher than the first SNR. The method further includes combining the first plurality of input signals and the second input signal to generate one or more driver signals, and driving one or more acoustic transducers using the one or more driver signals to generate an acoustic signal representative of the audio. The driver signals include spatial information derived from the first plurality of input signals, and are characterized by a third SNR that is higher than the first SNR.

2. 发明申请

US20210084407A1 ENHANCEMENT OF AUDIO FROM REMOTE AUDIO SOURCES 有权
公开(公告)号：US20210084407A1
公开(公告)日：2021-03-18
申请号：US16782610
申请日：2020-02-05
申请人： Bose Corporation
发明人： Carl Jensen , Andrew Todd Sabin , Andrew Jackson Stockton X , Daniel Ross Tengelsen , Marko Stamenovic , Wade P. Torres
IPC分类号： H04R3/00 , H04R3/04 , H04R1/40 , G10L21/0232 , H04S7/00 , H04R5/027
摘要： An audio enhancement method includes receiving a first plurality of input signals representative of audio captured using an array of two or more sensors, the first plurality of input signals characterized by a first signal-to-noise ratio (SNR), with the audio being the signal-of-interest. The method also includes receiving a second input signal representative of the audio, the second input signal characterized by a second SNR. The second SNR is higher than the first SNR. The method further includes combining the first plurality of input signals and the second input signal to generate one or more driver signals, and driving one or more acoustic transducers using the one or more driver signals to generate an acoustic signal representative of the audio. The driver signals include spatial information derived from the first plurality of input signals, and are characterized by a third SNR that is higher than the first SNR.

3. 发明申请

US20190132678A1 ADAPTIVE FEEDBACK NOISE CANCELLATION OF A SINUSOIDAL DISTURBANCE 审中-公开
公开(公告)号：US20190132678A1
公开(公告)日：2019-05-02
申请号：US16172154
申请日：2018-10-26
申请人： Bose Corporation
发明人： Ankita D. Jain , Wade P. Torres
IPC分类号： H04R3/04 , G10L21/0224 , H04R3/00
CPC分类号： H04R3/04 , G10K11/178 , G10K11/17875 , G10L21/0224 , G10L2021/02166 , H04R3/005
摘要： The technology described this document can be embodied in a method that includes receiving an error signal captured using a microphone, the error signal representing a difference between the sinusoidal component of a noise signal and an output of an acoustic transducer. The output of the acoustic transducer is configured to reduce the effects of the sinusoidal component of the noise signal. The method includes processing the error signal to compensate for effects due to a signal path between the acoustic transducer and the microphone, and determining a current estimate of one or more first parameters of the error signal. Based on such parameters, a current estimate of a time-varying step size associated with an adaptive process is determined, and based on the current estimate of the time-varying step size, a driver signal configured to change the output of the acoustic transducer is generated.

4. 发明申请

US20200313655A1 SUBBAND ADAPTIVE FILTER FOR SYSTEMS WITH PARTIALLY ACAUSAL TRANSFER FUNCTIONS 审中-公开
公开(公告)号：US20200313655A1
公开(公告)日：2020-10-01
申请号：US16369897
申请日：2019-03-29
申请人： Bose Corporation
发明人： Eric Raczka Bernstein , Wade P. Torres , Ankita D. Jain
IPC分类号： H03H21/00 , H04R3/00 , G10K11/178
摘要： A noise reduction system includes sensors configured to generate an input signal, an adaptive filter configured to represent a transfer function of a path traversed by the input signal, one or more processing devices, and one or more transducers. The processing devices receive the input signal and generate an updated set of filter coefficients of the adaptive filter by separating the input signal into frequency subbands; determining for each subband, coefficients of a corresponding subband adaptive module; and combining the coefficients of multiple subband adaptive modules. Determining the coefficients of the corresponding subband adaptive module includes selecting a subset of a precomputed set of filter coefficients of the adaptive filter. The processing devices process a portion of the input signal using the updated set of filter coefficients of the adaptive filter to generate an output that destructively interferes with another signal traversing the path represented by the transfer function.

5. 发明授权

US10721561B2 Adaptive feedback noise cancellation of a sinusoidal disturbance 有权
公开(公告)号：US10721561B2
公开(公告)日：2020-07-21
申请号：US16172154
申请日：2018-10-26
申请人： Bose Corporation
发明人： Ankita D. Jain , Wade P. Torres
IPC分类号： H04R3/04 , H04R3/00 , G10K11/178 , G10L21/0224 , G10L21/0216
摘要： The technology described this document can be embodied in a method that includes receiving an error signal captured using a microphone, the error signal representing a difference between the sinusoidal component of a noise signal and an output of an acoustic transducer. The output of the acoustic transducer is configured to reduce the effects of the sinusoidal component of the noise signal. The method includes processing the error signal to compensate for effects due to a signal path between the acoustic transducer and the microphone, and determining a current estimate of one or more first parameters of the error signal. Based on such parameters, a current estimate of a time-varying step size associated with an adaptive process is determined, and based on the current estimate of the time-varying step size, a driver signal configured to change the output of the acoustic transducer is generated.

6. 发明授权

US09685151B2 Transitioning between arrayed and in-phase speaker configurations for active noise reduction 有权
公开(公告)号：US09685151B2
公开(公告)日：2017-06-20
申请号：US15297229
申请日：2016-10-19
申请人： Bose Corporation
发明人： Wade P. Torres
IPC分类号： H03B29/00 , G10K11/178
CPC分类号： G10K11/178 , G10K11/1783 , G10K11/17857 , G10K2210/1282 , G10K2210/3016 , G10K2210/3026 , G10K2210/3027 , G10K2210/3215 , G10K2210/3219 , G10K2210/3221 , G10K2210/3229
摘要： A noise cancellation method and system comprises a system controller that produces a command signal in response to a signal from at least one microphone detecting sound in an area. The system controller includes an arrayed speaker controller for producing a driver signal for each speaker in response to the command signal such that combined sound emitted by the speakers in response to the driver signals produces a substantially uniform sound pressure field adapted to attenuate a noise field corresponding to the sound detected by the at least one microphone. The system controller includes an in-phase speaker controller for producing a common in-phase driver signal for all speakers in response to the command signal and a signal director module for proportioning the command signal between the arrayed and in-phase speaker controllers in response to a magnitude of voltage associated with driving the speakers in accordance with the command signal.

7. 发明申请

US20170040015A1 TRANSITIONING BETWEEN ARRAYED AND IN-PHASE SPEAKER CONFIGURATIONS FOR ACTIVE NOISE REDUCTION 有权
标题翻译：用于主动噪声减少的阵列和相位扬声器配置之间的转换
公开(公告)号：US20170040015A1
公开(公告)日：2017-02-09
申请号：US15297229
申请日：2016-10-19
申请人： Bose Corporation
发明人： Wade P. Torres
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K11/1783 , G10K11/17857 , G10K2210/1282 , G10K2210/3016 , G10K2210/3026 , G10K2210/3027 , G10K2210/3215 , G10K2210/3219 , G10K2210/3221 , G10K2210/3229
摘要： A noise cancellation method and system comprises a system controller that produces a command signal in response to a signal from at least one microphone detecting sound in an area. The system controller includes an arrayed speaker controller for producing a driver signal for each speaker in response to the command signal such that combined sound emitted by the speakers in response to the driver signals produces a substantially uniform sound pressure field adapted to attenuate a noise field corresponding to the sound detected by the at least one microphone. The system controller includes an in-phase speaker controller for producing a common in-phase driver signal for all speakers in response to the command signal and a signal director module for proportioning the command signal between the arrayed and in-phase speaker controllers in response to a magnitude of voltage associated with driving the speakers in accordance with the command signal.
摘要翻译：噪声消除方法和系统包括系统控制器，其响应于来自至少一个麦克风的信号产生指令信号，该信号检测区域中的声音。系统控制器包括阵列扬声器控制器，用于响应于命令信号为每个扬声器产生驾驶员信号，使得响应于驾驶员信号的扬声器发出的组合声音产生基本上均匀的声压场，其适于衰减相应的噪声场对于由至少一个麦克风检测到的声音。系统控制器包括同相扬声器控制器，用于响应于命令信号产生用于所有扬声器的公共同相驱动器信号;以及信号引导器模块，用于在阵列和同相扬声器控制器之间对命令信号进行比例，以响应于与根据命令信号驱动扬声器相关联的电压的大小。

8. 发明授权

US11297457B2 Spatialized audio relative to a peripheral device 有权
公开(公告)号：US11297457B2
公开(公告)日：2022-04-05
申请号：US16904087
申请日：2020-06-17
申请人： Bose Corporation
发明人： Eric J. Freeman , David Avi Dick , Wade P. Torres , Daniel R. Tengelsen , Eric Raczka Bernstein
IPC分类号： H04S7/00
摘要： An audio system, method, and computer program product which includes a wearable audio device and a mobile peripheral device. Each device is capable of determining its respective absolute or relative position and orientation. Once the relative positions and orientations between the devices are known, virtual sound sources are generated at fixed positions and orientations relative to the peripheral device such that any change in position and/or orientation of the peripheral device produces a proportional change in the position and/or orientation of the virtual sound sources. Additionally, first order and second order reflected audio paths may be simulated for each virtual sound source to increase the realism of the simulated sources. Each sound path can be produced by modifying the original audio signal using head-related transfer functions (HRTFs) to simulate audio as though it were perceived by the user's left and right ears as coming from each virtual sound source.

9. 发明申请

US20220082688A1 METHODS AND SYSTEMS FOR DETERMINING POSITION AND ORIENTATION OF A DEVICE USING ACOUSTIC BEACONS 有权
公开(公告)号：US20220082688A1
公开(公告)日：2022-03-17
申请号：US17022784
申请日：2020-09-16
申请人： Bose Corporation
发明人： Wade P. Torres
IPC分类号： G01S15/08 , G01P15/18 , G01C19/00 , G01P15/08 , H04R1/02
摘要： A system and method for determining the position and orientation of a wearable audio device, for example, methods and systems for determining the position, orientation, and/or height of a wearable audio device using acoustic beacons. In some examples, the determined position, orientation, and/or height can be utilized to correct for drift experienced by an inertial measurement unit (IMU). In other examples, the drift may cause am externalized or virtualize audio source, generated within a known environment, to move or drift relative to the known locations of physical audio sources within the environment. Thus, the systems and methods described herein can be utilized to correct for drift in the position of a virtual audio source with respect to the wearable audio device by first determining its own absolute position and orientation within the environment.

10. 发明申请

US20210167757A1 SUBBAND ADAPTIVE FILTER FOR SYSTEMS WITH PARTIALLY ACAUSAL TRANSFER FUNCTIONS 有权
公开(公告)号：US20210167757A1
公开(公告)日：2021-06-03
申请号：US17168676
申请日：2021-02-05
申请人： Bose Corporation
发明人： Eric Raczka Bernstein , Wade P. Torres , Ankita D. Jain
IPC分类号： H03H21/00 , G10K11/178 , H04R3/00
摘要： A noise reduction system includes sensors configured to generate an input signal, an adaptive filter configured to represent a transfer function of a path traversed by the input signal, one or more processing devices, and one or more transducers. The processing devices receive the input signal and generate an updated set of filter coefficients of the adaptive filter by separating the input signal into frequency subbands; determining for each subband, coefficients of a corresponding subband adaptive module; and combining the coefficients of multiple subband adaptive modules. Determining the coefficients of the corresponding subband adaptive module includes selecting a subset of a precomputed set of filter coefficients of the adaptive filter. The processing devices process a portion of the input signal using the updated set of filter coefficients of the adaptive filter to generate an output that destructively interferes with another signal traversing the path represented by the transfer function.

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