Leuven, Belgium – December 8, 2009 – LMS, the engineering innovation company, has released the
latest version of its market-leading acoustic simulation software: LMS Virtual.Lab Acoustics. Packed
with the latest innovative solutions and powerful solvers designed specifically for challenging acoustic
problems, the latest release of LMS Virtual.Lab Acoustics offers major advancements in terms of solver
performance and processing excellence with substantial developments including ray tracing for high
frequency acoustics and time-domain BEM, a new time-based method for acoustic problem-solving.
A core development focus has been to expand the FEM acoustic solver so that it can handle huge
industrial tasks, including large noise radiation problems. This is possible thanks to PML (Perfectly
Matched Layer), a technique that substantially reduces the number of required elements to solve noise radiation mega-problems more efficiently.

Other critical work has occurred in the area of LMS’ BEM technology with the addition of a time-domain
BEM solver, allowing acoustic engineers to do realistic simulations and gain more insight into timerelated
acoustic issues. In addition, the new inverse numerical acoustics solution helps determine
realistic vibration sources for a better noise and vibration system optimization.
LMS continues to lead the innovation race in the area of Fast Multiple BEM (FMBEM) with the addition
of patented ATV (Acoustic Transfer Vector) technology to the FMBEM solver.
With LMS’ brand-new ray tracing technology integrated in LMS Virtual.Lab Rev 9, acoustic engineers
will be able to handle the full audible frequency range, including sound system optimization in aircraft,
train or vehicle interiors.

Enhanced for aero-acoustic engineers, LMS Virtual.Lab Aero-Acoustics Rev 9 adds a variety of new
features, such as conservative mapping for more accurate predictions, CFD-based quadruples noise
sources, and improved fan formulation to provide ultimately more ways to address flow-induced noise.
“As the market leader in acoustic simulation, LMS is committed to providing the fastest, most robust
and most efficient solutions. That’s why our on-going focus on R&D ensures that year after year our
customers continue to have the best-possible tools available to meet the ever-changing challenges of
the acoustic simulation community,” commented Stefaan Goossens, Vice-President Simulation at LMS
International.

LMS customers with active service contracts are currently receiving their upgrades. LMS users
interested in the latest version should contact their local LMS representative or see
http://www.lmsintl.com/virtuallab-acoustics-rev9 for more information.

Journalists: LMS Virtual.Lab specialists are available for interviews. Please contact Email Contact
to arrange an interview.

High-resolution pictures for this PR can be found under www.lmsintl.com/pressimages

About LMS International

LMS is an engineering innovation partner for companies in the automotive, aerospace and other
advanced manufacturing industries. With approximately 30 years of experience, LMS helps customers
get better products to market faster and turn superior process efficiency into key competitive
advantages. With a unique combination of 1D and 3D simulation software, testing systems and
engineering services, LMS tunes into mission critical engineering attributes, ranging from system
dynamics, structural integrity and sound quality to durability, safety and power consumption. With multidomain solutions for thermal, fluid dynamics, electrical and mechanical system behavior, LMS can
address the complex engineering challenges associated with intelligent system design. Thanks to our
technology and dedicated people, LMS has become the partner of choice of more than 5,000
manufacturing companies worldwide. LMS, a Dassault Systèmes SIMULIA partner, is certified to
ISO9001:2008 quality standards and operates through a network of subsidiaries and representatives in key locations around the world. For more information on LMS, visit www.lmsintl.com.

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