由于声学领域的复杂性，多年来在封闭空腔中，如货车驾驶室，轿车内部，飞机客舱或火车内的内场声源定位一直是一个难题。LMS Test.Lab内场声源定位为这些高度复杂的内部声源定位提供了独一无二的解决方案。它有一个三维声学相机，并有最新的创新方案来定位漏声、风噪、以及在复杂环境中的吱嘎声。
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Engineers at International Automotive Components (IAC) – the largest acoustic materials supplier to the automotive industry – use the new LMS Test.Lab High Definition Acoustic Camera to identify noise sources in seconds compared to hours and days needed with traditional methods. Using this tool, engineers gain deeper insight into acoustic behavior and shorten turnaround times in lowering interior car noise for automakers around the world.
CETENA Ship Research Center uses LMS Test.Lab for a variety of standard – and not so standard maritime equipment testing. Everything from worst case scenario shock tests to the acoustic resonant frequency of a Murano chandelier on a mega-cruise ship is subject to the expert scrutiny of the CETENA testing team in Genoa, Italy. And this team counts on the powerful LMS testing solutions that can deliver results in minutes instead of days as billion-euro projects hang in the balance.
LMS Acoustic Holography performs a spatial transformation of sound fields – meaning that it takes a measurement of sound pressures along a certain plane and predicts what the readings would be anywhere else. This can be towards the nominal source (back propagation), towards the far field, or in any other direction or plane. Special techniques are available when working in complex multisource environments. Acoustic Holography is a powerful tool that helps to solve noise source identification and quantification problems. 
Interior sound source localization is a method that lets you precisely localize the source of a sound in a vehicle’s interior, such as a car or truck cockpit, the wagon of a train or the passenger cabin of an airplane. In cavities, the sound field is called a reflective field. It is a complex sound field. Taking the example of a car’s interior, the sound is there partially reflected at some locations, such as the windows, and absorbed again at other places, such as the lining on the roof.
