Born from our years of estimating and predicting noise from industrial noise sources, Power Acoustics, Inc. has developed and optimized a low-cost computer program for analyzing community noise and sound propagation emitted from a variety of noise sources.  The engineering software is based on the ISO 9613 parts 1 and 2 standards. SPM9613 provides calculations at specific field points (listeners) and predictions of A- and C-weighted sound level contours as well.  We sell this software as a low cost alternative to more expensive and difficult to use computer programs. 

The original release of our community noise sound propagation model, SPM9613™ was in January 1999.  Version 2 was released in February 2002.  The software has a Windows based user interface and enables users to perform multi-source and distributed source predictions with barriers and reflective surfaces.  Because the software is developed by a company that is also an end user, it is extremely flexible and easy to use.

SPM9613 Features and Extensions

• Fast setup and calculation times
• Automatic breakdown of large 3-D or line sources into multiple point sources
• Multiple barriers
• Reflections - automatic image sources
• Ground Attenuation with defined limits
• Miscellaneous Attenuation (Foliage, Industrial Sites)
• Graphical capability to assure correct user inputs
• Plan views of equipment, barriers, foliage or industrial sites, and observer locations
• Source sound power level spectrum plots and directivity plots (vertical and horizontal)
• Sorted sound source waterfall plots at each observer location
• Contour plotting of A or C weighted levels
• 3-D Ground Elevation plots
• Ground Hardness contours
• Extended Octave Band Center Frequency range - 16 to 8000 Hz
• Computation of C-weighted levels
• Source sorting on A or C-weighting
• Customizing services available
• MS Windows 95, 98, NT, 2000, XP, Vista, Windows 7 and 10 Compatible

All calculations, sound sources, barriers, ground elevations and observers are represented internally within SPM9613 in three dimensions (x, y, z coordinates).  Graphical output is presented in plan views of the equipment and observers and with contour plots.

Click on links below for technical downloads of SPM9613

Download a Specification Sheet
Download a Technical User's Manual