Transmission loss prediction software
INSUL is a program for predicting the sound insulation of walls, floors, ceilings and windows. The program can estimate the Transmission Loss (TL) in 1/3 octave bands and Weighted Sound Reduction Index (STC or Rw) for use in sound transfer calculations.
distributes INSUL in the German speaking region (Germany, Austria, Switzerland) and as well in Belgium and the Netherlands. For more information you can contact MARSHALL DAY ACOUSTICS or visit the official INSUL web page.
For information in german please follow this link.
With extensive drop down menus to select materials, and simple choices for construction details you can quickly evaluate different constructions. INSUL shows a picture of your construction and a graph of the 1/3 octave TLs.
TECHNICAL INFODevelopment on INSUL started more than 10 years ago, based on research in the USA by Ben Sharp and others. It has gradually developed into a unique tool that incorporates the best of many research papers published over the last 15 years. INSUL can be customised for particular materials (for instance a particular manufacturer's plasterboard).
EXAMPLESOf course such a program is of no use if it doesn't actually predict the performance of walls accurately. We have prepared a number of comparisons between predictions and measurements to give some idea of INSUL usefulness. A summary of a study on overall accuracy is shown on this page .
You can download a demonstration version of INSUL to evaluate for yourself.
INSUL Infoblatt (PDF 330kB)