acoustic near field是什么意思

网络释义

用法例句

The influence of elementary parameter change on the crossing-coupling of acoustic coupling array, and the near-field acoustic pressure of the elementary transducer are analyzed theoretically.

提出对声对接阵阵元参数进行控制,以达到提高声对接阵系统精度的目的,并对由于阵元参数改变而引起对接基阵各个阵元之间的交叉耦合的影响以及阵元的近场声压进行了理论分析和计算机仿真计算,结果证明该方法是有效的。

In order to counteract verification method s weakness of sealed coupler, we research a new verification method for frequency weighting character and frequency record of sound level meter s low frequency part, making use of some special characters of near sound field on the piston sound source s axis.

利用活塞声源轴上近声场一些特殊性质,探索声级计低频段频率计权特性和频率响应新的检定方法,以弥补封闭偶合腔检定方法的不足。

Study on the Surface Noise Prediction for Aircraft Cruise

飞机巡航近场噪声经验预测方法研究

Study on Sound Source Identification Based on Patch Near-field Acoustical Holography

基于局部近场声全息的噪声源辨识研究

Active Noise Control Using Near-Field Strategy in Local Free Space

采用近场误差策略的自由场局部有源噪声控制

Experimental research on near field pressure fluctuation and far field aerodynamic noises in a cross flow fan

贯流风机近场压力脉动与远场噪声的试验

The near field focused beamforming method for ship rediated noise

舰船噪声源近场聚焦波束形成定位方法

Fault Feature Extraction Technique Based on Patch Near-Field Acoustical Holography

基于局部近场声全息的机械噪声源特征提取技术

Acoustic-Based MVDR Algorithm for Vector Array Applying for Near-Field Noise Source Location Method

基于MVDR算法的声矢量阵噪声源近场定位方法研究

Acoustics--Determination of sound power levels of noise sources using sound pressure--Engineering method in an essentially free field over a reflecting plane

GB/T3767-1996声学声压法测定噪声源声功率级反射面上方近似自由场的工程法

Two Dimensional Near Field Sources Localization Based on Third-Order Cyclic Moment in Multiplicated Noise

乘性噪声背景下基于三阶循环矩的二维近场源定位方法

The loud noise from the nearby factory chafed him.

附近工厂的噪声使他烦燥。

Asymptotic representation for PDF of Alpha stable distribution

Alpha稳定噪声PDF的近似估计

Acoustics--Guidelines for the design of low-noise workplaces--Noise control strategies

GB/T17249.1-1998声学低噪声工作场所设计指南噪声控制规划

The Change of Acoustic Stapedius Reflex Amplitude with the Stimulation of the Wide Band Noise in Sound Field

声场下噪声刺激对镫骨肌声反射幅值的影响

distributed emission crossed-field noise-generator

分布发射式正交场噪声发生器

Standard of aircraft noise for environment around airport

GB9660-1988机场周围飞机噪声环境标准

Measurement of aircraft noise around airport

GB/T9661-1988机场周围飞机噪声测量方法

injected-beam crossed-field noise generator

注入式正交场噪声发生器

SOUND FIELD STRUCTURE AND MEASUREMENTS OF SHIP SELF-NOISE

舰船自噪声场结构及其实验研究方法