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This module models the generation and propagation of low frequency sound in complex duct networks. The frequency range is limited to the plane wave region in the connecting pipes. It is based on linear acoustic theory and all elements, e.g., a complex muffler, are reduced to two-ports while terminations and sources are represented as one-ports.

The INSUL software is developed by Marshall Day Acoustics, Auckland  - New Zealand. Navcon is the INSUL distributor for USA, Canada and Mexico.

Navcon Engineering Network conducts seminars and workshops on a variety of noise and vibration related topics.  Educating between 80 to 125 engineers and technicians per year, each presentation is custom tailored for the specific audience. 

Some of the custom training topics are as follows:

The Company began operations in Anaheim, California in 1971 as Acoustic Power Systems, Inc. Initially, the Company specialized in the development of high power acoustic generators. Subsequently, the company focused on the development of electro-dynamic shakers and power amplifiers. The Company's name was changed in 1989 to APS Dynamics, Inc.

Navcon Engineering was contracted to conduct the modal survey of the High Energy Solar Spectroscopic Imager (HESSI) spacecraft. The primary objective was to identify the damped natural frequencies, damping factors and mode shapes in the frequency band between 70 Hz. and 170 Hz.

The 2 day Environmental Noise Seminar training is intended for engineers, technicians and hygienists working in the fields of environmental, community, and/or Industrial noise measurement, analysis and control.