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    • 128. 发明授权
    • Acoustic echo control for automated speaker tracking systems
    • 自动扬声器跟踪系统的声学回声控制
    • US09385779B2
    • 2016-07-05
    • US14098064
    • 2013-12-05
    • CISCO TECHNOLOGY, INC.
    • Haohai Sun
    • H04B3/20H04R29/00A61F11/06G10K11/16H03B29/00H04R3/00H04B3/23G10L25/51H04N7/15G10L21/0208
    • H04B3/23G10L25/51G10L2021/02082H04M9/082H04M2250/20H04N7/15H04R3/005
    • A processing system can include a tracking microphone array; audio tracker circuitry connected to the tracking microphone array to track an audio source based on an audio input from the array; communication microphones; and a processor. The processor can include audio circuitry to receive an audio input from the communication microphones and process the audio input to apply one or more of acoustic echo cancellation (AEC) and acoustic echo suppression (AES) processing to the audio input. The processor can further include calculating circuitry to calculate a ratio of signal power after and before the AEC and/or the AES processing, and control circuitry to generate an acoustic echo presence indication based on the ratio calculated by the calculating circuitry. The processor can transmit, via transmitting circuitry, the acoustic echo presence indication to an audio tracking device via a data communication channel between the processor and the audio tracker.
    • 处理系统可以包括跟踪麦克风阵列; 连接到跟踪麦克风阵列的音频跟踪器电路基于来自阵列的音频输入来跟踪音频源; 通讯麦克风; 和处理器。 处理器可以包括音频电路,以从通信麦克风接收音频输入,并处理音频输入以将一个或多个声学回声消除(AEC)和声学回声抑制(AES)处理应用于音频输入。 处理器还可以包括计算电路以计算在AEC和/或AES处理之前和之后的信号功率的比率,以及控制电路,以基于由计算电路计算的比率来生成声学回声存在指示。 处理器可以经由发送电路经由处理器和音频跟踪器之间的数据通信信道将声学回声存在指示发送到音频跟踪装置。
    • 130. 发明授权
    • Rotatable imaging assembly for providing multiple fields of view
    • 可旋转成像组件,用于提供多个视场
    • US09288471B1
    • 2016-03-15
    • US13781620
    • 2013-02-28
    • Amazon Technologies, Inc.
    • Jung Sik Yang
    • H04N15/00H04N13/02
    • H04N13/221A63F13/213A63F13/24G01B11/245G06F3/017G06F3/0304H04M1/0264H04M2250/20
    • Various embodiments enable a first gesture to be detected from a user above a display screen of a computing device. The first gesture is detected using an imaging element of the computing device in a first position. In response to recognizing the first gesture, an input associated with the recognized first gesture is provided to an application executing thereon. The imaging element is movable and, depending on the application, can be moved to a second position. Accordingly, a second gesture is detected adjacent the computing device with the imaging element in the second position. In response to the recognized second object, a second input is provided to an appropriate application executing on the computing device.
    • 各种实施例使得能够从计算设备的显示屏幕上方的用户检测第一手势。 使用计算设备的成像元件在第一位置来检测第一手势。 响应于识别第一手势,将与识别的第一手势相关联的输入提供给在其上执行的应用。 成像元件是可移动的,并且根据应用,可以移动到第二位置。 因此,在成像元件处于第二位置时,邻近计算设备检测到第二手势。 响应于所识别的第二对象,向计算设备上执行的适当应用提供第二输入。