Acoustic tests / NVH
Our team of experts combines virtual simulations and physical testing methods to create optimal acoustic solutions and give your products an outstanding sound. At Bertrandt's Acoustics Center, we carry out all the necessary tests for vehicle acoustics - from material samples and component tests to complete vehicle tests - with the aim of harmonious acoustic optimization and maintaining the functionality of the components.
This acoustic optimization begins in the early development phase of new model series and extends from current series vehicles to concept and pre-development phases.
With a view to electromobility, we are working intensively on topics such as AVAS (Acoustic Vehicle Alerting System) and e-sound design for vehicle exteriors and interiors. In quiet e-vehicles, passengers perceive noises in the interior more intensely.
Our focus is on the design of the pass-by noise - the acoustic perception of the vehicle from the outside. Here we are working on innovative approaches to make the sound of the vehicle recognizable, for example by changing the body structure or using actuators.
Analyses include frequency and order analyses as well as modal analyses in order to understand and optimize sound events and vibrations in the vehicle. With the transfer path analysis, we analyze the sound transmission from the source to the receiver and derive possible improvements.
Browse through our services and order your tests directly online!
Measurement of the first resonance frequency of the seat back vibration by means of a modal analysis using impulse hammer or, if required, shaker excitation to ensure the vibration comfort requirements for the seat structure and the complete seat. Presentation of the results as a frequency response function (yield over frequency), optionally phase over frequency, per spatial direction.
The measurement is used for acoustic component characterization, particularly of electrical plug connections, as the locking mechanisms to be actuated in vehicle assembly must generate an audible locking feedback. must generate audible locking feedback. The locking noise is recorded and evaluated with a microphone in a low-reflection environment in the near field.
