Leuven, Belgium - October 30, 2007 - LMS, the engineering innovation company, announced the Introduction of LMS Test.Lab Rev 8 for noise and vibration testing and engineering. Designed to power testing productivity, LMS Test.Lab builds on its proven track record to accelerate noise and vibration testing. With Rev 8, LMS Test.Lab continues to add efficiency and flexibility in every step of the testing process: faster test preparation, highly efficient data acquisition, flexible processing, powerful reporting and transparent data sharing. LMS Test.Lab extends its Structures product line with a new MIMO Stepped Sine solution and expands its reach in Acoustics with a new Sound Intensity module and an innovative High Density Acoustic Camera. The integration with the new LMS SCADAS Mobile VC8 and VB8 data acquisition modules and the support of master/slave configurations further strengthens its capabilities for in-field or in-vehicle testing.

Today's vehicle or aircraft designs extensively rely on damping materials to reduce overall noise and vibration levels. This makes it ever more challenging to measure vibro-acoustic frequency response functions (FRF) for noise path contribution or experimental modal analysis. Currently adopted techniques are often unable to excite the structure at sufficiently high levels, resulting in low-quality measurement results and long test runs. LMS Test.Lab Rev 8 introduces a new MIMO (Multiple Input Multiple Output) Sine Testing acquisition solution. This solution uses the stepped sine excitation technique to measure high quality FRFs, which allow the concentration of the excitation energy at a single frequency. Exciting the structure at much higher energy levels delivers high-quality results in far less time. The new LMS Test.Lab Stepped Sine workbook has been extensively validated in different testing assignments, including Ground Vibration Testing of a full aircraft, and several full-vehicle 4-poster test rigs for vibration and acoustic comfort.

To efficiently eliminate acoustic hotspots, sound engineers continuously look for new approaches to localize the source of a specific noise problem. The newly introduced High Definition Acoustic Camera in LMS Test.Lab combines the beamforming and focalization methods to localize the sound sources on a structure more accurately then before. LMS Test.Lab visualizes the sound fields through animation as a function of time and/or frequency, giving the user a clear indication of the acoustic hot spots. The new LMS Test.Lab Rev 8 HD Acoustic Camera includes a specifically developed antenna with microphones, built-in camera and distance detection devices.


The new Sound Intensity solution in LMS Test.Lab Rev 8 supports an easy definition and calibration of one or more intensity probes. It allows users to measure the pressure residual intensity index of the probe and to perform an online calculation of the residual intensity as a quality indicator of the measurement. In addition to the sound intensity and sound pressure levels, LMS Test.Lab also measures the reactive sound intensity, particle velocity and residual intensity. This combined measurement capability eliminates the need for multiple measurements and guarantees higher quality and consistency of the test data.