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    • 6. 发明申请
    • SYSTEM AND METHOD OF DETECTING A USER'S VOICE ACTIVITY USING AN ACCELEROMETER
    • 使用加速度计检测用户声音活动的系统和方法
    • US20140093093A1
    • 2014-04-03
    • US13840136
    • 2013-03-15
    • APPLE INC.
    • Sorin V. DusanEsge B. AndersenAram LindahlAndrew P. Bright
    • H04R3/00
    • H04R3/005G10L25/78G10L2021/02165
    • A method of detecting a user's voice activity in a mobile device is described herein. The method starts with a voice activity detector (VAD) generating a VAD output based on (i) acoustic signals received from microphones included in the mobile device and (ii) data output by an inertial sensor that is included in an earphone portion of the mobile device. The inertial sensor may detect vibration of the user's vocal chords modulated by the user's vocal tract based on vibrations in bones and tissue of the user's head. A noise suppressor may then receive the acoustic signals from the microphones and the VAD output and suppress the noise included in the acoustic signals received from the microphones based on the VAD output. The method may also include steering one or more beamformers based on the VAD output. Other embodiments are also described.
    • 这里描述了在移动设备中检测用户的语音活动的方法。 该方法从基于(i)从移动设备中包括的麦克风接收的声信号产生VAD输出的语音活动检测器(VAD)开始,以及(ii)包括在移动设备的耳机部分中的惯性传感器输出的数据 设备。 惯性传感器可以基于用户头部的骨骼和组织中的振动来检测用户的声带调制的用户的声带的振动。 然后,噪声抑制器可以从麦克风和VAD输出接收声信号,并且基于VAD输出抑制包括在从麦克风接收的声信号中的噪声。 该方法还可以包括基于VAD输出来操纵一个或多个波束形成器。 还描述了其它实施例。
    • 7. 发明申请
    • POWER MANAGEMENT TECHNIQUES FOR BUFFERING AND PLAYBACK OF AUDIO BROADCAST DATA
    • 用于缓冲和播放音频广播数据的电源管理技术
    • US20130109339A1
    • 2013-05-02
    • US13725048
    • 2012-12-21
    • Apple Inc.
    • Aram LindahlRichard Michael PowellJoseph M. Williams
    • H04H40/18
    • H04H40/18G06F1/3203
    • Various techniques that relate to prolonging the battery life on a portable electronic device during the buffering and playback of audio broadcast data are provided. In accordance with disclosed embodiments, upon detecting a low power state, the device may implement one or more low power actions, including starting, continuing, or stopping one or more audio broadcast functions, such as buffering or playing back audio broadcast data, to reduce overall power consumption, and thus prolong battery life. In one embodiment, a user may specify one or more low power actions that are to be implemented during a low power state by configuring user settings stored on the device. In another embodiment, the device, upon detecting a low power state, may prompt the user to make a selection from a listing of selectable low power action options and perform the selected low power action.
    • 提供了涉及在音频广播数据的缓冲和重放期间延长便携式电子设备上的电池寿命的各种技术。 根据所公开的实施例,在检测到低功率状态时,设备可以实现一个或多个低功率动作,包括启动,继续或停止一个或多个音频广播功能,例如缓冲或重放音频广播数据,以减少 总体功耗,从而延长电池寿命。 在一个实施例中,用户可以通过配置存储在设备上的用户设置来指定要在低功率状态下实现的一个或多个低功率动作。 在另一个实施例中,设备在检测到低功率状态时可以提示用户从可选择的低功率动作选项的列表中进行选择并执行所选择的低功率动作。