A vehicle is built of many components contributing to sound and vibration generation and propagation: engine, gearbox, brakes, tires and more. Each of these components needs to be tested and optimized during NVH testing.

At the design stage, analysis based on order tracking techniques is carried out on prototypes in order to qualify Rotating parts. In parallel, Structural Analysis based on modal analysis techniques is usually undertaken on vibrating and transmitting components. All the experimental modal characteristics including deflection shapes can be determined and compared with the calculations. In this case, OROS Modal 2 is the perfect solution for your application.

Track and road tests are carried out to analyze and validate the behavior of the vehicle and its components in the real situation: cabin noise or pass by noise tests are among the most common. When it comes to this stage, time is valuable and real time techniques can result in a dramatic gain compared to the usual recording/post processing techniques. Sound quality, Sound power, Sound intensity are the 3 main OROS solutions used for automotive applications.

OROS analyzers are used for R&D and on productions lines. In production, tests are very important for noise test specifications and as parameters of quality. OROS has over 10 years experience in production tests. 3-Series analyzers are fast in measurement, have high repeatablity, quick in decision making and easy to adapt.