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首页> 外文会议>2006 International Compressor Engineering Conference at Purdue vol.2 >ACOUSTIC FILTERS PART I: DESIGN AND ANALYSIS
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ACOUSTIC FILTERS PART I: DESIGN AND ANALYSIS

机译：声学滤波器第一部分：设计与分析

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摘要

The application of the solution of the wave equation to model frequency characteristics of acoustical filters is reviewed. It was first applied by Davies et al. (1954). A version of this method, which is suitable for application on computers, was developed by Eversman (1987). It equates pressure and volume velocity at each boundary at which the acoustic duct changes its cross-section, or acoustic impedance. In this sense, the method can be considered as one-dimensional boundary element method. Its advantage over the four-pole parameter method is in that that it enables detailed view of the inside of the system. Standing waves of pressure and volume velocity can be calculated at any arbitrarily chosen location in the system for any frequency. Velocity of sound, density of gas and velocity of flow can be different in every part of the system. Furthermore, modeling and analysis of multiple parallel acoustic paths does not impose any difficulty.
机译：综述了波动方程解在声学滤波器频率特性建模中的应用。它首先由Davies等人应用。 （1954）。 Eversman（1987）开发了此方法的一种版本，适用于计算机。它等于声管改变其横截面或声阻抗的每个边界处的压力和体积速度。从这个意义上讲，该方法可以视为一维边界元方法。与四极点参数方法相比，它的优点在于，它可以详细查看系统内部。压力和体积速度的驻波可以在系统中任何频率下任意选择的位置进行计算。声音的速度，气体的密度和流速在系统的每个部分都可能不同。此外，对多个平行声路径进行建模和分析不会带来任何困难。

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