Acoustic Measurement Equipment

FKFS has a wide range of standard and special acoustic measurement equipment, as well as the software tools needed to perform signal and modal analysis. FKFS uses artificial heads to make binaural recordings of sound signals. When played back through headphones, these ensure a natural acoustic impression with directional localization. This technology is becoming increasingly important in the evaluation of sound quality.

A laser-scanning vibrometer is used to find the operational modes of vibrating surfaces, enabling us to study the acoustics of the chassis. This includes the vibrations of the structure (body parts, windows, etc.) as well as the resulting acoustic radiation.

FKFS has a selection of array systems and acoustic mirrors for localizing sound sources. Inside the vehicle, the "conformal mapping" method is generally used. We have a microphone array and acoustic mirrors (also array-based) for investigating exterior noises.

Our array-based acoustic mirror (developed by FKFS) is characterized by high dynamics (SNR) and therefore offers a relatively high spatial resolution. Thanks to its 108 microphones (fitted in a 200 x 145 mm mounting plate), an area of around 1.2 x 0.9 m can be measured at a distance of 4.5 m – without having to reposition the system.

Contact

Dr. rer.nat. Reinhard Blumrich

Ph.: +49 711 685-67613