参量阵,parametric array
1)parametric array参量阵
1.A device known as aparametric array employs the nonlinearity of the air to create an extre-mely directional audible sound from inaudible ultrasound.超指向性扬声器是一种利用声波在空气中传播的非线性由不可听超声产生可听声的参量阵装置,这种声源相比相同大小的传统扬声器,可以产生非常强的指向性、像聚光灯光束一样的宽带可听声束。
2.Audio directional loudspeaker is a novel loudspeaker which can generate an audio signal with high directivity by utilizing theparametric array principle.声频定向扬声器是利用参量阵原理,产生高指向性声频信号的新一代扬声器。
3.The nearfields ofparametric array produced by circular focus beam,circular uniform beam and nondiffracting beam was calculated by using KZK equation.文章采用KZK方程数值求解均匀平面阵、聚焦阵及非衍射阵形成的参量阵波束近场声场 ,比较了不同波束声轴上的原、差频声压级及声截面。
英文短句/例句
1.Research on Directivity of Ultrasonic Emitter for Parametric Array Loudspeaker System参量阵扬声器系统的超声发射阵指向性研究
2.Design of Parametric Array Test System Based on LabVIEW基于LabVIEW的参量阵测试系统设计
3.Design of Parametric Array System And Calculation & Optimization of Acoustic Response非线性参量阵系统设计与声响应优化计算
4.Audio directional loudspeaker is a novel loudspeaker which can generate an audio signal with high directivity by utilizing the parametric array principle.声频定向扬声器是利用参量阵原理，产生高指向性声频信号的新一代扬声器。
5.Research on Array Processing for Multi-parameter Estimation of Non-stationary Signals;非平稳信号阵列多参量估计技术研究
6.Array Signal Parameter Estimation Based on Fourth-Order Cumulants;基于四阶累积量的阵列信号参数估计
7.Design of Parametric Acoustic Transducer Array and Test System声学参量换能器阵及其测试系统设计
8.The scalar is then called the eigenvalue associated with the eigenvector.参见矩阵的特征值与特征向量的几何意义。
9.Multi-parameter Estimation Technology of Wide-band Array Signals Based on High-order Cumulant;基于高阶累积量的阵列信号多参数估计技术
10.Research on the Real Symmetric Matrix Inverse Eigenvalue Problems;对含参量的实对称矩阵特征值反问题的研究
11.RESEARCH OF THE CONDITION NUMBER OF MATRIX IN MULTI-PARAMETER MEASUREMENT FBGS矩阵条件数应用于FBG传感器多参数测量研究
12.Multi-parameter estimation of harmonics based on quaternion matrix基于四元数矩阵的谐波信号多参量联合估计
13.First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.首先，假定多胞型不确定参数存在于状态空间模型的系统矩阵、输入矩阵和量测矩阵中。
14.Multi-Parameters Estimation of Harmonics and Vector-sensor Array Based on Quaternion;基于四元数的谐波信号与矢量阵列信号多参量估计算法研究
15.A High Resolution Approach to 2-D Signal Parameter Estimation--DOA Matrix Method一种高分辨率二维信号参量估计方法——波达方向矩阵法
16.Study on Methods of Parameters Estimation of Cyclostationary Signals Based on Electromagnetic Vector Sensor Array;基于电磁矢量传感器阵列的循环平稳信号的参数估计的方法研究
17.Study on Multidimensional Parameter Estimation Based on Non-ideal Electromagnetic Vector Sensor Array;基于电磁矢量传感器非理想阵列的多参数估计方法研究
18.Research on Non-contact Measuring Method for Geometric Parameter of External Screw Thread Based on DSP and Linear Array CCD基于DSP和线阵CCD外螺纹几何参数非接触测量方法研究
相关短句/例句
lattice parameter点阵参量
1.Calculating thelattice parameter of series TiO2 samples, and combining the grain - size and substructure pa-rameter, we found that there was lattice distortion at the nanocrystalline TiO2 powder.对系列粉晶进行了X射线衍射点阵参量计算，结合所得到的晶粒度和微结构参数，发现纳米TiO2粉晶组元中存在着晶格畸变。
3)Parametric array声参量阵
4)parametric sonar参量阵声纳
5)parametric acoustic array声学参量阵
1.Based on the theory ofparametric acoustic array,one 3×3 nine-element rectangular transducer array and a test system were designed.根据声学参量阵原理,设计了一个3×3的九元矩形换能器阵及其测试系统,并在空气进行验证性实验;系统包括正弦信号产生电路、信号控制电路、功率放大电路以及回波信号接收电路等,辅以LabVIEW平台,实现正弦信号和脉冲控制信号的产生、发射信号时间长度控制以及功率放大,并最终驱动换能器阵;实验表明,当有85kHz和90kHz的正弦信号产生时,系统各部分均能正常工作,能够听到天花板处有声响,且回波信号中含有5kHz的频率成分,即证明换能器阵及其系统的设计均是可行的。
2.Based on the operation principle ofparametric acoustic array,a test system consists of hardware and software system is designed in this paper.基于声学参量阵的工作原理,设计一个由软硬件组成的测试系统,其中硬件系统由换能器发射阵、超声波发射电路和回波接收电路等构成;软件系统以LabVIEW作为开发工具,通过利用数据采集卡,实现了输入信号的产生、波形显示、参数控制、数据采集存储等多种功能。
6)parametric array loudspeaker参量阵扬声器
1.Based on its high directivity,parametric array loudspeaker can be widely applied in many areas, and a good market prospect is expected.参量阵扬声器是一种新型的强指向性扬声器,其原理是利用超声载波在空气介质中传播时的非线性效应生成音频信号。
2.In theparametric array loudspeaker system, a number of piezoelectric ceramic ultrasonic transducers are used to make up of transducer emitter, and the number and location of transducer unit can change the directivity of the emitter.在参量阵扬声器系统中,需采用若干个压电陶瓷超声换能器单元组成换能器发射阵,换能器单元的数目和排列位置会对发射阵的指向性产生影响。
延伸阅读
参量阵见水声学、非线性声学。
