Noise and Vibration Measurement

Acoustic analysis of motor components in the End-of-Line test

Car doors, seats, camshafts, ball, bearings, cylinder head gaskets, tailgates, ABS motors – the list of the single components that are installed in vehicles and cause a certain noise level is long.

A large number of these are rotary or mechanic functional units. Car manufacturers (OEM) specify to their suppliers how sound effects must be developed and evaluated due to specific requirements.  Furthermore, acoustic analyses can detect decisive faults.

The noise and impact sound analysis for mechanic functional test describes a method where assemblies are checked for their vibration behaviour by means of detecting airborne and impact sounds. Thereby, a sound image is recorded and analyses it using selected functions (order analysis, loudness, RMS, tonality, ...).

Analysis on the automobile's exterior mirror

Even supposedly unspectacular exterior mirrors are full of technology. Comfortable adjustment of the field of vision or automatic folding are pleasant comfort functions. However, disturbing noises should be avoided in the process. The acoustic analysis systems CARoLINE and SoundChecker enable an acoustic evaluation of mirrors.


► Article on third-octave and modulation analysis

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Acoustic analysis with products from GÖPEL electronic

  • CARoLINE realises the evaluation of the functionality and assembly quality of electric motor-driven systems in vehicles in the End-of-Line.

    » Learn more about CARoLINE

  • Sound Checker is a stand-alone system for sound analysis. It consists of a measurement data collecting unit, structure-borne sound sensors and  microphones.

    » Learn more about Sound Checker

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