HOME About ENC Software
Download the software order form in PDF format. (17 KB, 1 Dec 2021)
No longer is it necessary to do tedious and risky hand calculations. Practically all of the calculation procedures in the book, Engineering Noise Control, 6th edition, by D.A. Bies, C.H. Hansen, C.Q. Howard and K.L. Hansen have been verified and encapsulated in a windows graphical user interface which is extraordinarily simple to use and provides results in tabular and graphical form. The calculation procedures have been thoroughly tested and checked. All of the algorithms here have been updated in accordance with the sixth edition of the textbook. The book can be ordered from Amazon books www.amazon.com.
ENC software is updated regularly (approximately twice per year) and the low price has remained the same since 2021. As a result of the updates, the software includes considerably more content than covered by the latest 6th edition “Noise Control Engineering” textbook by Bies, Hansen, Howard and Hansen. As an example, in the 4-pole analysis section, ENC includes the ability to cascade any muffler element type from a choice of 15 types and includes additional elements such as perforated sheets and sound absorbing material placed at the entrance of Helmholtz resonators and 1/4 – wave tubes. Additional content is discussed in detail in the comprehensive 400+ page manual that accompanies the software. The user manual also contains detailed instructions on how to use ENC.
The demo version of ENC is the same as the full version. However, if the computer or network server has no USB key (or dongle) inserted, ENC will reset itself to its default state every 60 seconds and all user input data will be reset to their default values.
A useful feature of ENC is its ability to run an analysis several times and plot the results for each run on the same axes to explore the effect of changing various input parameters and to allow a design goal to be achieved quickly. Targeted users are mechanical engineers, noise and vibration consultants and students undertaking noise control courses, although anyone interested in noise control or who has a noise problem would benefit. However, the more complex modules and pages do assume that the user has a good knowledge and understanding of acoustics and noise control. ENC software is divided into nine modules, corresponding to various sections of the text book.
Module 1, Fundamentals and Criteria
Module 2, Sound source calculations
Module 3, Sound propagation (incl. meteorological, barrier and ground effects)
Module 4, Room acoustics and absorption
Module 5, TL, enclosures and barriers
Module 6, Reactive and Dissipative mufflers
Module 8, Equipment sound power calculations
