Switched-Mode Audio Amplifier Employing Power-Supply Audio- Modulation
    2.
    发明申请
    Switched-Mode Audio Amplifier Employing Power-Supply Audio- Modulation 审中-公开
    开关式音频放大器采用电源音频调制

    公开(公告)号:US20140369529A1

    公开(公告)日:2014-12-18

    申请号:US13915805

    申请日:2013-06-12

    Abstract: A device and method are disclosed for modulating a power converter based on an audio signal to directly drive a speaker with a differential audio output signal. A first modulation signal and a second modulation signal are generated based on an input audio signal so that the first and second modulation signals are complementary signals to each other. In one embodiment, a feedback signal, such as an acoustic feedback signal from the speaker, is also used to generate the first and second modulation signals. A power supply voltage is modulated with the first modulation signal to generate a first voltage signal. The power supply voltage is also modulated with the second modulation signal to generate a second voltage signal. The first and second voltage signals form a differential audio signal that is used to drive the speaker. Alternatively, the power converter can drive a speaker with a single-ended output signal.

    Abstract translation: 公开了一种用于基于音频信号调制功率转换器以直接驱动具有差分音频输出信号的扬声器的装置和方法。 基于输入音频信号生成第一调制信号和第二调制信号,使得第一和第二调制信号彼此互补。 在一个实施例中,诸如来自扬声器的声反馈信号的反馈信号也用于产生第一和第二调制信号。 用第一调制信号调制电源电压以产生第一电压信号。 电源电压也用第二调制信号进行调制以产生第二电压信号。 第一和第二电压信号形成用于驱动扬声器的差分音频信号。 或者,功率转换器可以驱动具有单端输出信号的扬声器。

    SWITCHED-MODE AUDIO AMPLIFIER EMPLOYING POWER-SUPPLY AUDIO-MODULATION

    公开(公告)号:US20190214950A1

    公开(公告)日:2019-07-11

    申请号:US16294652

    申请日:2019-03-06

    Abstract: A device and method are disclosed for modulating a power converter based on an audio signal to directly drive a speaker with a differential audio output signal. A first modulation signal and a second modulation signal are generated based on an input audio signal so that the first and second modulation signals are complementary signals to each other. In one embodiment, a feedback signal, such as an acoustic feedback signal from the speaker, is also used to generate the first and second modulation signals. A power supply voltage is modulated with the first modulation signal to generate a first voltage signal. The power supply voltage is also modulated with the second modulation signal to generate a second voltage signal. The first and second voltage signals form a differential audio signal that is used to drive the speaker. Alternatively, the power converter can drive a speaker with a single-ended output signal.

    GESTURE-CONTROLLED TABLETOP SPEAKER SYSTEM
    5.
    发明申请
    GESTURE-CONTROLLED TABLETOP SPEAKER SYSTEM 有权
    控制面板扬声器系统

    公开(公告)号:US20150193193A1

    公开(公告)日:2015-07-09

    申请号:US14249696

    申请日:2014-04-10

    Abstract: A tabletop speaker system includes an amplifier, proximity and acceleration detectors, and a processor. The processor is operatively coupled to receive signals from the proximity and accelerometer detectors, and in response to the proximity and acceleration signals, activate various functions local to the tabletop speaker system to operate and control various behaviors or features of the tabletop speaker system. In this way, the tabletop speaker system can respond to user gestures for a very natural control interface.

    Abstract translation: 台式扬声器系统包括放大器,接近和加速度检测器以及处理器。 处理器可操作地耦合以从接近和加速度计检测器接收信号,并且响应于接近和加速度信号,激活桌面扬声器系统的局部的各种功能来操作和控制台式扬声器系统的各种行为或特征。 以这种方式,桌面扬声器系统可以响应用户手势进行非常自然的控制界面。

    Gesture-controlled tabletop speaker system

    公开(公告)号:US10474420B2

    公开(公告)日:2019-11-12

    申请号:US16159333

    申请日:2018-10-12

    Abstract: A speaker system includes a case, an audio input, speakers, an accelerometer, and a computer processor. The audio input is structured to receive a program audio signal from an audio device. The speakers are configured to play an audio output based on the program audio signal, the audio output causing a vibration of the case. The accelerometer is configured to detect the vibration of the case as well as a user tap on the case. The computer processor is configured to identify a user gesture that includes the tap on the case, to identify the tap apart from the case vibration by processing the detected vibration of the case and the detected user tap on the case based on information from the program audio signal to separate the detected user tap from the detected vibration, and to commence a particular function associated with the user gesture.

    Gesture-controlled tabletop speaker system

    公开(公告)号:US10198239B2

    公开(公告)日:2019-02-05

    申请号:US15470413

    申请日:2017-03-27

    Abstract: A speaker system includes a case, an audio input, speakers, an accelerometer, and a computer processor. The audio input is structured to receive a program audio signal from an audio device. The speakers are configured to play an audio output based on the program audio signal, the audio output causing a vibration of the case. The accelerometer is configured to detect the vibration of the case as well as a user tap on the case. The computer processor is configured to identify a user gesture that includes the tap on the case, to identify the tap apart from the case vibration by processing the detected vibration of the case and the detected user tap on the case based on information from the program audio signal to separate the detected user tap from the detected vibration, and to commence a particular function associated with the user gesture.

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