What is adem-edu?
It is a simple program that can be used for plane wave analysis of mufflers, silencers and resonators that can be assembled by cascading and nesting from the element blocks that come with the software. The acoustic elements contained in the default database of the software are listed below:
Main features
Acoustic models of many practical intake and exhaust systems can be constructed from these elements. There is no limit on the number of elements that can be used in a model. The connectivity of elements is defined by the user manually by assigning common node numbers to the nodes of the connecting elements when inputting the element data on datasheets.
Computed acoustic parameters are: Transmission Loss, Attenuation, Noise Reduction, Insertion Loss, Transfer Matrix, Sound Pressure Level with a piston source or a source with constant pressure strength and impedance.
Mean flow (gas or liquid), temperature and pressure gradients and cross-sectional area variations can be taken into account. Parametric calculation is possible and results can be plotted or exported for post-processing.
Use of the software is explained in this Tutorial
Installation
Adem-edu is free to engineering students and instructors (please apply from your college email address). It is also free when you get a hard cover copy of Duct Acoustics (please apply with a proof of purchase).
Download the setup file (please contact if you have difficulty)
Click on the setup file to install the program on your computer (must not be a network or a virtual machine).
Run the program from the Start menu to get your Registration Code.
Copy your Registration Code and mail it to the author to obtain your Access Code.
If you don’t see the on-line help pages when you have access to the software, please visit this site to download a Winhelp viewer for Win 8.1 or earlier operating systems; and visit this site for Win 10; or see the instructions in c:\adem_edu\WinhelpView directory after installation.
Software for Mufflers and Silencers 