会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Method and apparatus for characterizing an acoustic impedance
    • 用于表征声阻抗的方法和装置
    • US06752018B2
    • 2004-06-22
    • US10159267
    • 2002-06-03
    • Jeffrey Scott GoldmeerSimon Ralph Sanderson
    • Jeffrey Scott GoldmeerSimon Ralph Sanderson
    • G01N2916
    • G01N29/46G01N29/09G01N29/2462G01N2291/02872G01N2291/044G01N2291/103
    • In one embodiment of the present invention, an apparatus for characterizing an acoustic impedance of an engineering component acoustically coupled to an acoustic waveguide includes: a pressure measurement apparatus adapted to be moved and to be disposed to measure pressure signals, the pressure signals being measured at respective ones of a plurality of predetermined locations along the acoustic waveguide; an exciter adapted to excite the acoustic waveguide with an excitation signal; a data collection module adapted to incorporate the pressure signals from the pressure measurement apparatus into a pressure signal set; a transform module adapted to transform the pressure signal set to a frequency domain set; a wave shape identifier adapted to identify a plurality of wave shape parameters from the frequency domain set; and a statistical computer adapted to compute from the frequency domain set a statistical measure for the wave shape parameters, the statistical measure being selected from the group consisting of residual variance, correlation coefficient, F-statistic, p-statistic, and confidence interval.
    • 在本发明的一个实施例中,用于表征声学耦合到声波导的工程部件的声阻抗的装置包括:压力测量装置,适于移动并被设置成测量压力信号,压力信号是在 沿着声波导的多个预定位置中的相应的一个; 激励器,其适于用激励信号激励声波导; 数据收集模块,适于将来自压力测量装置的压力信号并入压力信号组; 变换模块,其适于将所述压力信号集合变换为频域集合; 波形标识符,用于从所述频域集中识别多个波形参数; 以及适于从频域计算出的波形参数的统计测量的统计计算机,所述统计测量从由残差方差,相关系数,F统计量,p统计量和置信区间组成的组中选择。