SELF-CALIBRATING LOUDSPEAKER SYSTEM
    2.
    发明申请
    SELF-CALIBRATING LOUDSPEAKER SYSTEM 有权
    自校准扬声器系统

    公开(公告)号:US20100272270A1

    公开(公告)日:2010-10-28

    申请号:US12065479

    申请日:2006-09-02

    CPC classification number: H04R29/001 H04R29/008 H04S7/301

    Abstract: Systems and methods for calibrating a loudspeaker with a connection to a microphone located at a listening area in a room. The loudspeaker includes self-calibration functions to adjust speaker characteristics according to effects generated by operating the loudspeaker in the room. In one example, the microphone picks up a test signal generated by the loudspeaker and the loudspeaker uses the test signal to determine the loudspeaker frequency response. The frequency response is analyzed below a selected low frequency value for a room mode. The loudspeaker generates parameters for a digital filter to compensate for the room modes. In another example, the loudspeaker may be networked with other speakers to perform calibration functions on all of the loudspeakers in the network.

    Abstract translation: 用于校准具有与位于房间中的收听区域的麦克风的连接的扬声器的系统和方法。 扬声器包括自校准功能,以根据在室内操作扬声器产生的效果来调节扬声器特性。 在一个示例中,麦克风拾取由扬声器产生的测试信号,并且扬声器使用测试信号来确定扬声器频率响应。 频率响应被分析为低于室内模式的低频值。 扬声器产生数字滤波器的参数,以补偿房间模式。 在另一示例中,扬声器可以与其他扬声器联网,以对网络中的所有扬声器执行校准功能。

    Clock system capable of synchronizing clock frequencies of power processing devices and digital signal processing devices
    3.
    发明授权
    Clock system capable of synchronizing clock frequencies of power processing devices and digital signal processing devices 失效
    时钟系统能够同步功率处理设备和数字信号处理设备的时钟频率

    公开(公告)号:US07043313B1

    公开(公告)日:2006-05-09

    申请号:US09657833

    申请日:2000-09-08

    CPC classification number: H03F3/217 G06F1/04 H04L7/0008

    Abstract: The present invention synchronizes the clock of the power processing devices and digital signal processing devices in an audio system. The system may include a clock, a digital signal processor (DSP), and a pulse width modulated (PWM) power processing device wherein the digital signal processor and the power processing device would use the clock for their operation. The DSP and the PWM power processing device may use, for operation, the frequency of the clock, or a multiple, integer fraction thereof, such that all clocks are synchronized and all potential sum and/or difference frequencies are predetermined and fall outside the audible frequency range. The may also include a sensor capable of detecting and reporting the clock information either through a metal wire, fiber optic wire, infrared or radio frequency link, which can allow the power processing devices to use the same clock as the DSP.

    Abstract translation: 本发明在音频系统中同步功率处理设备和数字信号处理设备的时钟。 该系统可以包括时钟,数字信号处理器(DSP)和脉冲宽度调制(PWM)功率处理设备,其中数字信号处理器和功率处理设备将使用时钟进行操作。 DSP和PWM功率处理设备可以使用时钟的频率或者其多个整数分数,使得所有的时钟是同步的,并且所有的潜在和和/或差分频率是预定的,并且落在可听见的 频率范围。 还可以包括能够通过金属线,光纤线,红外或射频链路来检测和报告时钟信息的传感器,其可以允许功率处理设备使用与DSP相同的时钟。

    System and method for varying low audio frequencies inversely with audio signal level
    4.
    发明授权
    System and method for varying low audio frequencies inversely with audio signal level 失效
    与音频信号电平相反地改变低音频的系统和方法

    公开(公告)号:US07016509B1

    公开(公告)日:2006-03-21

    申请号:US09658010

    申请日:2000-09-08

    CPC classification number: H03G5/165 H03G1/0047 H03G5/22

    Abstract: The present invention relates to an auto loudness circuit for performing loudness compensation automatically depending on the signal level. When the signal level decreases, loudness compensation is slowly introduced and as the signal level increases, loudness compensation is quickly removed. To do so, the auto loudness circuit utilizes a filter circuit with the characteristic of a first order bass boost. The filter circuit maintains a corner frequency which is proportional to the inverse of audio level in order to mimic the Fletcher-Munson curves. Because the circuit employs a capacitance-multiplier with a first order resistance capacitance filter, the bass boost is inversely proportional to the signal level. Thus, bass boost is achieved automatically as the program content changes so that the listener is unaware of significant changes in program material as signal levels change either through increase or decrease in volume, crescendo or new material.

    Abstract translation: 本发明涉及一种根据信号电平自动执行响度补偿的自动响度电路。 当信号电平降低时,缓慢引入响度补偿,随着信号电平的增加,响度补偿被快速消除。 为了做到这一点,自动响度电路采用具有一级低音提升特性的滤波电路。 滤波器电路保持与音频电平的倒数成比例的转角频率,以模拟Fletcher-Munson曲线。 因为该电路采用一阶电容电容滤波器的电容倍增器,所以低音提升与信号电平成反比。 因此,随着节目内容的变化,自动实现低音提升,使得收听者不会因为音量,渐强或新素材的增加或减少而改变信号水平而改变节目素材。

    Ambient Noise Sound Level Compensation
    6.
    发明申请
    Ambient Noise Sound Level Compensation 审中-公开
    环境噪声声级补偿

    公开(公告)号:US20070223733A1

    公开(公告)日:2007-09-27

    申请号:US11757798

    申请日:2007-06-04

    CPC classification number: H04S7/301 H03G3/32 H04R29/00 H04R29/007

    Abstract: An ambient noise compensation system determines an ambient noise level of a listening area. The ambient noise level may be calculated from the differences between a desired audio signal in the listening area, a measured background noise level in the listening area, and measured acoustic characteristics of the listening area. Based on the ambient noise level, the system adjusts a level of the desired audio signal so that it is audible over undesirable noise.

    Abstract translation: 环境噪声补偿系统确定收听区域的环境噪声水平。 环境噪声电平可以根据收听区域中的所需音频信号,收听区域中测量的背景噪声电平和听力区域的测量声学特性之间的差异来计算。 基于环境噪声水平,系统调整所需音频信号的电平,使其在不期望的噪声上听到。

    METHOD, APPARATUS, AND SYSTEM FOR ANALYSIS, EVALUATION, MEASUREMENT AND CONTROL OF AUDIO DYNAMICS PROCESSING
    8.
    发明申请
    METHOD, APPARATUS, AND SYSTEM FOR ANALYSIS, EVALUATION, MEASUREMENT AND CONTROL OF AUDIO DYNAMICS PROCESSING 审中-公开
    音频动态处理的分析,评估,测量和控制的方法,装置和系统

    公开(公告)号:US20150155842A1

    公开(公告)日:2015-06-04

    申请号:US14095951

    申请日:2013-12-03

    Abstract: A method, apparatus, and system for measuring and analyzing the effects of dynamics modifying processors on a signal. This new approach utilizes statistical analysis techniques to provide a direct comparison and evaluation between the processed signal and the unprocessed signal's dynamic characteristics. The method identifies and quantifies Effective Dynamic Range, Clip Tolerance, Lower Limit Tolerance, Crest Factor, and Diminuendo Factor, using either peak or r.m.s values. In an alternative embodiment, the invention allows for user adjustment and control of the relative relationship of Crest Factor and Diminuendo Factor, which the user may perceive as loudness.

    Abstract translation: 用于测量和分析动态修改处理器对信号的影响的方法,装置和系统。 这种新方法利用统计分析技术来提供处理信号和未处理信号的动态特性之间的直接比较和评估。 该方法使用峰值或r.m.s值来识别和量化有效动态范围,限幅容差,下限公差,波峰因数和Diminuendo因子。 在替代实施例中,本发明允许用户调整和控制用户可以感知为响度的波峰因子和二维素因子的相对关系。

    SELF-CALIBRATION LOUDSPEAKER SYSTEM
    9.
    发明申请
    SELF-CALIBRATION LOUDSPEAKER SYSTEM 有权
    自校准扬声器系统

    公开(公告)号:US20140161265A1

    公开(公告)日:2014-06-12

    申请号:US14071128

    申请日:2013-11-04

    CPC classification number: H04R29/001 H04R29/008 H04S7/301

    Abstract: Systems and methods for calibrating a loudspeaker with a connection to a microphone located at a listening area in a room. The loudspeaker includes self-calibration functions to adjust speaker characteristics according to effects generated by operating the loudspeaker in the room. In one example, the microphone picks up a test signal generated by the loudspeaker and the loudspeaker uses the test signal to determine the loudspeaker frequency response. The frequency response is analyzed below a selected low frequency value for a room mode. The loudspeaker generates parameters for a digital filter to compensate for the room modes. In another example, the loudspeaker may be networked with other speakers to perform calibration functions on all of the loudspeakers in the network.

    Abstract translation: 用于校准具有与位于房间中的收听区域的麦克风的连接的扬声器的系统和方法。 扬声器包括自校准功能,以根据在室内操作扬声器产生的效果来调节扬声器特性。 在一个示例中,麦克风拾取由扬声器产生的测试信号,并且扬声器使用测试信号来确定扬声器频率响应。 频率响应被分析为低于室内模式的低频值。 扬声器产生数字滤波器的参数,以补偿房间模式。 在另一示例中,扬声器可以与其他扬声器联网,以对网络中的所有扬声器执行校准功能。

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