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    System and method for audio noise processing and noise reduction
    21.
    发明授权
    System and method for audio noise processing and noise reduction 有权

    公开(公告)号：US10176823B2

    公开(公告)日：2019-01-08

    申请号：US14274544

    申请日：2014-05-09

    Applicant: Apple Inc.

    Inventor： Sorin V. Dusan ,  Aram M. Lindahl ,  Alexander Kanaris ,  Vasu Iyengar

    IPC: G10L21/0216 ,  G10L21/0208

    Abstract: Electronic system for audio noise processing and noise reduction comprises: first and second noise estimators, selector and attenuator. First noise estimator processes first audio signal from voice beamformer (VB) and generate first noise estimate. VB generates first audio signal by beamforming audio signals from first and second audio pick-up channels. Second noise estimator processes first and second audio signal from noise beamformer (NB), in parallel with first noise estimator and generates second noise estimate. NB generates second audio signal by beamforming audio signals from first and second audio pick-up channels. First and second audio signals include frequencies in first and second frequency regions. Selector's output noise estimate may be a) second noise estimate in the first frequency region, and b) first noise estimate in the second frequency region. Attenuator attenuates first audio signal in accordance with output noise estimate. Other embodiments are also described.

    System and method of mixing accelerometer and microphone signals to improve voice quality in a mobile device
    26.
    发明授权
    System and method of mixing accelerometer and microphone signals to improve voice quality in a mobile device 有权
    混合加速度计和麦克风信号的系统和方法，以改善移动设备中的语音质量

    公开(公告)号：US09363596B2

    公开(公告)日：2016-06-07

    申请号：US13840667

    申请日：2013-03-15

    Applicant: Apple Inc.

    Inventor： Sorin V. Dusan ,  Aram Lindahl ,  Esge B. Andersen

    IPC: G10L21/0232 ,  H04R1/46 ,  G10L25/90 ,  H04R1/10 ,  G10L21/0216 ,  H04R3/00

    CPC classification number: H04R1/46 ,  G10L21/0216 ,  G10L25/90 ,  G10L2021/02166 ,  G10L2021/02168 ,  H04R1/1033 ,  H04R1/1041 ,  H04R1/1083 ,  H04R3/005 ,  H04R2201/107 ,  H04R2460/13

    Abstract: A method of improving voice quality in a mobile device starts by receiving acoustic signals from microphones included in earbuds and the microphone array included on a headset wire. The headset may include the pair of earbuds and the headset wire. An output from an accelerometer that is included in the pair of earbuds is then received. The accelerometer may detect vibration of the user's vocal chords filtered by the vocal tract based on vibrations in bones and tissue of the user's head. A spectral mixer included in the mobile device may then perform spectral mixing of the scaled output from the accelerometer with the acoustic signals from the microphone array to generate a mixed signal. Performing spectral mixing includes scaling the output from the inertial sensor by a scaling factor based on a power ratio between the acoustic signals from the microphone array and the output from the inertial sensor. Other embodiments are also described.

    Abstract translation: 一种改善移动设备中的语音质量的方法是通过从耳机线中包括的耳塞和麦克风阵列中的麦克风接收声信号而开始的。 耳机可以包括一对耳塞和耳机线。 然后接收来自包括在该对耳塞中的加速度计的输出。 加速度计可以基于用户头部的骨骼和组织中的振动来检测由声道过滤的用户的声带的振动。 包括在移动设备中的频谱混频器然后可以执行来自加速度计的缩放输出与来自麦克风阵列的声学信号的频谱混合，以产生混合信号。 执行频谱混合包括基于来自麦克风阵列的声学信号与惯性传感器的输出之间的功率比的比例因子来缩放惯性传感器的输出。 还描述了其它实施例。

    Automatic speech recognition triggering system
    27.
    发明授权
    Automatic speech recognition triggering system 有权

    公开(公告)号：US11683632B2

    公开(公告)日：2023-06-20

    申请号：US17404942

    申请日：2021-08-17

    Applicant: Apple Inc.

    Inventor： Sorin V. Dusan ,  Aram M. Lindahl ,  Robert D. Watson

    IPC: H04R1/10 ,  G10L25/06 ,  G10L15/08 ,  G10L25/78 ,  G10L15/22

    CPC classification number: H04R1/1091 ,  G10L15/08 ,  G10L25/06 ,  G10L25/78 ,  G10L15/22 ,  G10L2015/088 ,  H04R2460/13

    Abstract: An automatic speech recognition (ASR) triggering system, and a method of providing an ASR trigger signal, is described. The ASR triggering system can include a microphone to generate an acoustic signal representing an acoustic vibration and an accelerometer worn in an ear canal of a user to generate a non-acoustic signal representing a bone conduction vibration. A processor of the ASR triggering system can receive an acoustic trigger signal based on the acoustic signal and a non-acoustic trigger signal based on the non-acoustic signal, and combine the trigger signals to gate an ASR trigger signal. For example, the ASR trigger signal may be provided to an ASR server only when the trigger signals are simultaneously asserted. Other embodiments are also described and claimed.

    Noise-dependent audio signal selection system
    28.
    发明授权
    Noise-dependent audio signal selection system 有权

    公开(公告)号：US11227617B2

    公开(公告)日：2022-01-18

    申请号：US16563624

    申请日：2019-09-06

    Applicant: Apple Inc.

    Inventor： Sorin V. Dusan ,  Sungyub D. Yoo ,  Dubravko Biruski

    IPC: G10L21/0208 ,  G10L15/08 ,  G10L21/0216

    Abstract: A device implementing an automatic speech recognition triggering system includes at least one processor configured to receive first and second audio signals respectively corresponding to first and second microphones of a device. The at least one processor is further configured to generate, based on at least one of the first or second audio signals, a third audio signal corresponding to a voice beam directed to an expected position of a mouth of a user. The at least one processor is further configured to determine whether wind noise is present in at least one of the first, second, or third audio signals. The at least one processor is further configured to, based on determining whether wind noise is present, an audio signal from among the second or third audio signals, for a determination of whether at least one of the first or second audio signals corresponds to the user.

    AUTOMATIC SPEECH RECOGNITION TRIGGERING SYSTEM
    29.
    发明申请
    AUTOMATIC SPEECH RECOGNITION TRIGGERING SYSTEM 有权

    公开(公告)号：US20210377650A1

    公开(公告)日：2021-12-02

    申请号：US17404942

    申请日：2021-08-17

    Applicant: Apple Inc.

    Inventor： Sorin V. Dusan ,  Aram M. Lindahl ,  Robert D. Watson

    IPC: H04R1/10 ,  G10L25/06 ,  G10L15/08 ,  G10L25/78

    Abstract: An automatic speech recognition (ASR) triggering system, and a method of providing an ASR trigger signal, is described. The ASR triggering system can include a microphone to generate an acoustic signal representing an acoustic vibration and an accelerometer worn in an ear canal of a user to generate a non-acoustic signal representing a bone conduction vibration. A processor of the ASR triggering system can receive an acoustic trigger signal based on the acoustic signal and a non-acoustic trigger signal based on the non-acoustic signal, and combine the trigger signals to gate an ASR trigger signal. For example, the ASR trigger signal may be provided to an ASR server only when the trigger signals are simultaneously asserted. Other embodiments are also described and claimed.

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