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    • 1. 发明申请
    • METHOD AND APPARATUS FOR CARRYING OUT INTEGRITY TESTS
    • 执行完整性测试的方法和装置
    • US20110214485A1
    • 2011-09-08
    • US13128702
    • 2009-10-21
    • Maik JornitzJens Meyer
    • Maik JornitzJens Meyer
    • G01M3/24
    • B01D46/0086B01D46/2407B01D46/44B01D2273/18B01D2273/24G01N2015/084
    • A method and an apparatus are provided for carrying out integrity tests of at least one filter element, arranged within a filter housing, with porous filter materials. Sensors are provided for measuring the sound generated by a test fluid when it flows through the filter element. The method includes applying a test fluid to a first side of the filter materials of the filter element while maintaining a constant fluid pressure, measuring the body-borne sound and/or the vibrations caused by test fluid flowing through the filter materials by sensors, and comparing the body-borne sound and/or the vibrations with the body-borne sound and/or the vibrations of an integral, identical filter element, measured under identical conditions.
    • 提供了一种方法和装置,用于对布置在过滤器壳体内的至少一个过滤元件进行多孔过滤材料的完整性测试。 提供传感器用于测量测试流体在流过过滤元件时产生的声音。 该方法包括将测试流体施加到过滤元件的过滤材料的第一侧,同时保持恒定的流体压力,测量由传感器流过过滤材料的测试流体引起的体内声音和/或振动,以及 将身体传播声音和/或振动与在相同条件下测量的整体相同的过滤元件的身体传播声音和/或振动进行比较。
    • 4. 发明申请
    • Audio system based on at least second-order eigenbeams
    • 基于至少二阶本征束的音响系统
    • US20050123149A1
    • 2005-06-09
    • US10500938
    • 2003-01-10
    • Gary ElkoRobert KubliJens Meyer
    • Gary ElkoRobert KubliJens Meyer
    • H04R1/02H04R1/40H04R3/00
    • H04R5/027H04R3/005H04R2201/401H04S3/00H04S2400/15
    • A microphone array-based audio system that supports representations of auditory scenes using second-order (or higher) harmonic expansions based on the audio signals generated by the microphone array. In one embodiment, a plurality of audio sensors are mounted on the surface of an acoustically rigid sphere. The number and location of the audio sensors on the sphere are designed to enable the audio signals generated by those sensors to be decomposed into a set of eigenbeams having at least one eigenbeam of order two (or higher). Beamforming (e.g., steering, weighting, and summing) can then be applied to the resulting eigenbeam outputs to generate one or more channels of audio signals that can be utilized to accurately render an auditory scene. Alternative embodiments include using shapes other than spheres, using acoustically soft spheres and/or positioning audio sensors in two or more concentric patterns.
    • 基于麦克风阵列的音频系统,其基于由麦克风阵列产生的音频信号,支持使用二阶(或更高)谐波扩展的听觉场景的表示。 在一个实施例中,多个音频传感器安装在声学刚性球体的表面上。 球体上的音频传感器的数量和位置被设计成使得由这些传感器产生的音频信号能够分解成具有至少一个二阶(或更高)的本征光束的一组本征束。 然后可以将波束形成(例如,导向,加权和求和)应用于所产生的本征波束输出以产生可用于准确地渲染听觉场景的一个或多个音频信号通道。 替代实施例包括使用球形以外的形状,使用声软球和/或以两个或多个同心图案定位音频传感器。