几何声学

本文结合几何声学原理、计算机技术和信号处理理论，研制了一种三维空间视听一体化仿真系统CAVS。

In this paper , we integrate the basic principle of geometrical acoustics , the computer technique and the theory of signal processing to design a combined auralization and visualization system ( CAVS ) .

从几何声学上加以分析和改进。

Analysis and improvement from the view of geometrical acoustics .

ODEON是基于几何声学理论发展起来的一个建筑音质设计软件，已得到了许多同行的认可，但也存在一些不足，特别反映在其低频计算准确性较差方面。

ODEON is a computer software for building acoustic design , which is based on geometric acoustics and has been accepted by many researchers .

总结了耦合空间声场模拟的几种方法：统计声学方法、几何声学方法、波动声学方法等。

Besides , the methods for simulating the sound fields such as statistical modeling , geometrical modeling and wave modeling are summed up in this paper .

本文首先利用几何声学理论对水中及钢中声场进行了理论分析，并对水中声场进行了测试。

The characteristic of sound field in water and the steel was analyzed by using the geometry acoustics theory , and the sound field condition was tested in water in this paper .

在分析了基于几何声学的方法，基于随机模型的方法及基于信号模型的方法的主要思想后，文中进一步给出了具体的算法，并分析了各个算法的优缺点。

After the analysis of primary ideas behind the methods based on the geometrical acoustics , stochastic model and signal model , The authors further suggest the concrete algorithms and perform some comparison among them .

二维声线追踪的三角形前向展开法，以几何声学为理论基础，对空间进行三角形划分，由斯涅尔法则确定声线路径。

The two-dimensional acoustic ray tracing method by forward deploying triangle , which is based on the geometric acoustics , divides the space by triangles and then confirms the acoustic ray tracing by Snell rule .

本文根据几何声学和折射规律，推导出在水平风速作用下单点声雷达测量垂直速度的精确计算公式。

Based on the geometric acoustics and the law of acoustic refraction , an accurate formula for calculating the vertical velocity measured by monostatic acoustic radar under the influence of horizontal wind velocity has been derived .

根据波动声学和几何声学原理，将列车看作一运动着的有限长线声源，建立了有声屏障时城市高架轨道交通沿线声场分布计算模型。

According to the theory of wave acoustics and ray acoustics , train is regarded as a moving limited line sound source and the mathematics model of sound field distribution is set up around the elevated railway .

应用几何声学方法，推导了聚焦超声作用于测试靶上的辐射力的通用公式，讨论了全反射靶和全吸收靶上的辐射力。

The formulas of radiation force acting on targets in the focused ultrasonic field are derived using ray acoustic method . The radiation forces on the totally reflecting target and on the totally absorbing target are discussed .

本文通过几何声学原理和高斯声束模型研究了超声波在多层介质中的声压场分布，研究了超声波穿越异质材料界面过程的行为特征。

In this article , the distribution of acoustic pressure field has been studied using the principle of geometric acoustic and the Gaussian beam model in copper-steel multilayer structure . The characteristic of propagation has also been researched when the acoustic propagates through the multilayer .

本文根据几何声学原理，利用一维有限长线声源模型，模拟预测了高架轻轨交通辐射的噪声在沿线不同远处、不同高度处场点上的强度。

Based on the principles of geometrical acoustics and uesd one dimensional limited line sound source model , the intensity of noise is simulated and predicted , which caused by the light rail transit ( LRT ) over head , in different distance and high .