Voice Sensing using Multiple Microphones
    1.
    发明申请
    Voice Sensing using Multiple Microphones 有权
    使用多个麦克风的语音感应

    公开(公告)号:US20160267899A1

    公开(公告)日:2016-09-15

    申请号:US14657604

    申请日:2015-03-13

    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.

    Abstract translation: 降噪耳机包括第一和第二耳机,每个耳机包括相应的反馈麦克风,相应的前馈麦克风和相应的输出驱动器。 第一反馈滤波器从至少第一反馈麦克风接收输入并产生第一滤波反馈信号。 第一前馈滤波器从至少第一前馈麦克风接收输入并产生第一滤波前馈信号。 第一个加法器结合了第一滤波反馈信号和第一滤波前馈信号并产生第一输出信号。 输出接口提供第一个输出信号作为耳机的输出。

    Controlling ambient sound volume
    3.
    发明授权

    公开(公告)号:US10484781B2

    公开(公告)日:2019-11-19

    申请号:US15918057

    申请日:2018-03-12

    Abstract: An earpiece includes a feed-forward microphone coupled to the environment outside the headphones, a feedback microphone coupled to an ear canal of a user when the earpiece is in use, a speaker coupled to the ear canal of the user when the earpiece is in use, a digital signal processor implementing feed-forward and feedback noise compensation filters between the respective microphones and the speaker, and a memory storing an ordered sequence of sets of filters for use by the digital signal processor. Each of the sets of filters includes a feed-forward filter that provides a different frequency-dependent amount of sound pass-through or cancellation, which in combination with residual ambient sound reaching the ear results in a total insertion gain at the ear of a user.

    Compressive Hear-through in Personal Acoustic Devices

    公开(公告)号:US20190130928A1

    公开(公告)日:2019-05-02

    申请号:US16124056

    申请日:2018-09-06

    Abstract: The technology described in this document can be embodied in a method that includes receiving an input signal representing audio captured by a microphone of an active noise reduction (ANR) headphone, processing, by one or more processing devices, a portion of the input signal to determine a noise level in the input signal, and determining that the noise level satisfies a threshold condition. The method also includes, in response to determining that the noise level satisfies the threshold condition, generating an output signal in which ANR processing on the input signal is controlled in accordance with a target loudness level of the output signal, and driving an acoustic transducer of the ANR headphone using the output signal.

    Voice sensing using multiple microphones

    公开(公告)号:US10224016B2

    公开(公告)日:2019-03-05

    申请号:US15728732

    申请日:2017-10-10

    Abstract: A noise cancelling headset includes an earpiece, the earpiece including a feedback microphone, a feed-forward microphone, and an 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.

    Voice Sensing using Multiple Microphones
    9.
    发明申请

    公开(公告)号:US20190304429A1

    公开(公告)日:2019-10-03

    申请号:US16291525

    申请日:2019-03-04

    Abstract: A noise cancelling headset includes an earpiece, the earpiece including a feedback microphone, a feed-forward microphone, and an 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.

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