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    Voice sensing using multiple microphones
    31.
    发明授权
    Voice sensing using multiple microphones 有权

    公开(公告)号：US10192537B2

    公开(公告)日：2019-01-29

    申请号：US15713173

    申请日：2017-09-22

    Applicant: Bose Corporation

    Inventor： Daniel M. Gauger, Jr. ,  Jahn Dmitri Eichfeld ,  Steven H. Isabelle ,  John Allen Rule

    IPC: G10K11/175 ,  H04R1/10 ,  H04M1/60 ,  H04R3/00 ,  H04M1/58

    Abstract: A noise cancelling headset includes first and second earpieces, each earpiece including a respective feedback microphone, a respective feed-forward microphone, and a respective output driver. A first feedback filter receives an input from at least the first feedback microphone and produces a first filtered feedback signal. A first feed-forward filter receives an input from at least the first feed-forward microphone and produces a first filtered feed-forward signal. A first summer combines the first filtered feedback signal and the first filtered feed-forward signal and produces a first output signal. An output interface provides the first output signal as an output from the headset.

    In-ear active noise reduction earphone
    33.
    发明授权
    In-ear active noise reduction earphone 有权

    公开(公告)号：US09792893B1

    公开(公告)日：2017-10-17

    申请号：US15270392

    申请日：2016-09-20

    Applicant: Bose Corporation

    Inventor： Daniel M. Gauger, Jr. ,  Anand Parthasarathi ,  Lei Cheng ,  Matthew R. Hicks ,  John Allen Rule

    IPC: H03B29/00 ,  G10K11/178 ,  H04R1/10

    CPC classification number: H04R1/1016 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3028 ,  H04R1/1083 ,  H04R2460/01

    Abstract: An active noise reduction (ANR) earphone system includes a feedback microphone for detecting noise, feedback circuitry, responsive to the feedback microphone, for applying a digital filter Kfb to an output of the feedback microphone to produce an antinoise signal, an electroacoustic driver for transducing the antinoise signal into acoustic energy, a housing supporting the feedback microphone and the driver near the entrance to the ear canal, and an ear tip for coupling the housing to the external anatomical structures of a first ear of a user and positioning the housing to provide a consistent acoustic coupling of the feedback microphone and the driver to the ear canal of the first ear. The acoustic coupling includes a tube of air defined by the combination of the housing and ear tip, having a length L and effective cross-sectional area A such that the ratio L/A is less than 0.6 m−1.

    Collaboratively processing audio between headset and source to mask distracting noise
    34.
    发明授权
    Collaboratively processing audio between headset and source to mask distracting noise 有权
    在耳机和源之间协同处理音频，以掩盖分心的噪音

    公开(公告)号：US09503803B2

    公开(公告)日：2016-11-22

    申请号：US14225807

    申请日：2014-03-26

    Applicant: Bose Corporation

    Inventor： Daniel M. Gauger, Jr. ,  Christopher B. Ickler ,  David Bradford Ramsay

    IPC: A61F11/06 ,  G10K11/16 ,  H03B29/00 ,  H04R1/10 ,  G10K11/175 ,  H03G3/32 ,  H04K3/00 ,  H04R5/04

    CPC classification number: H04R1/1083 ,  G10K11/175 ,  H03G3/32 ,  H04K3/42 ,  H04K3/43 ,  H04K3/45 ,  H04K3/825 ,  H04K2203/12 ,  H04R5/04

    Abstract: A media playback device has programmable signal processing capabilities and an input receiving signals representative of ambient noise. The media playback device identifies an output response characteristic and an attenuation characteristic of a set of headphones associated with the media playback device, predicts a property of audio output by the headphones at a user's ear based on the ambient noise input signal, the output response characteristic, and the attenuation characteristic of the headphones, predicts expected residual ambient noise at the user's ear, when wearing the headphones, derived from the ambient noise input signal and the attenuation characteristic, and modifies masking audio signals to be provided to the headphones such that they will mask the expected residual ambient noise at the user's ear.

    Abstract translation: 媒体播放设备具有可编程信号处理能力和表示环境噪声的输入接收信号。 媒体播放装置识别与媒体播放装置相关联的一组耳机的输出响应特性和衰减特性，基于环境噪声输入信号预测耳机在用户耳朵输出的音频的特性，输出响应特性 ，并且耳机的衰减特性预测了当佩戴耳机时，从环境噪声输入信号和衰减特性导出的用户耳朵处的预期残留环境噪声，并且修改要提供给耳机的屏蔽音频信号，使得它们 将掩盖用户耳朵周围的预期残留环境噪声。

    Frequency-dependent ANR reference sound compression
    36.
    发明授权
    Frequency-dependent ANR reference sound compression 有权
    频率依赖ANR参考声压缩

    公开(公告)号：US09123320B2

    公开(公告)日：2015-09-01

    申请号：US13962205

    申请日：2013-08-08

    Applicant: Bose Corporation

    Inventor： Ricardo F. Carreras ,  Daniel M. Gauger, Jr. ,  Marcel Joho

    IPC: G10K11/00 ,  G10L21/0208

    CPC classification number: G10K11/16 ,  G10K11/002 ,  G10L21/0208

    Abstract: An active noise reduction (ANR) circuit includes a digital feed-forward ANR pathway coupled to a feed-forward microphone, to detect environmental sounds in an environment external to a casing, and to a first acoustic driver to output sounds within the casing. The digital feed-forward ANR pathway applies a plurality of filters using a first set of coefficients to convert signals from the feed-forward microphone to feed-forward anti-noise sounds to reduce environmental sounds within the casing. In response to a stimulus, the digital feed-forward ANR pathway applies the plurality of filters using a second set of coefficients, which reduce the degree of feed-forward ANR to enable human speech sounds in the environment external to the casing to be conveyed from the feed-forward microphone to the acoustic driver with less reduction than provided by the first plurality of filters.

    Abstract translation: 有源降噪（ANR）电路包括耦合到前馈麦克风的数字前馈ANR路径，以检测外壳环境中的环境声音，以及第一声学驱动器，以在壳体内输出声音。 数字前馈ANR路径使用第一组系数应用多个滤波器以将来自前馈麦克风的信号转换为前馈抗噪声声音，以减少壳体内的环境声音。 响应于刺激，数字前馈ANR路径使用第二组系数应用多个滤波器，这降低了前馈ANR的程度，以使壳体外部的环境中的人类语音能够从 所述前馈麦克风到所述声学驱动器具有比由所述第一多个滤波器提供的减小更少的衰减。

    Reducing occlusion effect in ANR headphones
    37.
    发明授权
    Reducing occlusion effect in ANR headphones 有权
    降低ANR耳机的遮挡效果

    公开(公告)号：US09020160B2

    公开(公告)日：2015-04-28

    申请号：US13667111

    申请日：2012-11-02

    Applicant: Bose Corporation

    Inventor： Daniel M. Gauger, Jr.

    IPC: G10K11/16 ,  H04R1/10 ,  G10K11/178

    CPC classification number: H04R1/1083 ,  G10K11/17837 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3056 ,  H04R1/1008 ,  H04R2460/05

    Abstract: In an active noise reducing headphone, a signal processor is configured to apply first feedback filters to the feedback signal path, causing the feedback signal path to operate at a first gain level, as a function of frequency, during a first operating mode, and apply second feedback filters to the feedback signal path, causing the feedback signal path to operate at a second gain level less than the first gain level at some frequencies during a second operating mode. The first gain level is a level of gain that results in effective cancellation of sounds transmitted through or around the ear cup and through the user's head, and the second level is a level of gain that is matched to the level of sound of a typical wearer's voice transmitted through the wearer's head when wearing the headphone.

    Abstract translation: 在有源减噪耳机中，信号处理器被配置为将第一反馈滤波器施加到反馈信号路径，使得反馈信号路径在第一操作模式期间作为频率的函数在第一增益水平下操作，并且应用 第二反馈滤波器到反馈信号路径，使得反馈信号路径在第二操作模式期间以某些频率小于第一增益电平的第二增益电平工作。 第一增益水平是一个增益水平，导致有效地消除通过耳罩周围或通过用户头部传播的声音，而第二级别是与典型佩戴者的声音水平相匹配的增益水平 佩戴耳机时，声音通过佩戴者的头部传播。

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