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| In the reverberation chambers of the HP Pelzer acoustic centers throughout the world all vehicle components and subsystems are tested and analysed with respect to their acoustic properties. Specifically sound intensity, sound absorption, sound power and sound insulation properties are tested. On the basis of this data (noise maps) the acoustic properties of the components can be substantially improved with the use of new development materials. | ||
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| |  Test of a vehicle side wall on the building acoustics test window |
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|  Chassis dyno | |  Chassis dyno |
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| The interior noise of vehicles is analysed and optimised on a chassis dyno in a semi anechoic chamber. | |||
| Samples of noise recordings inside a vehicle (at the drivers seat): diesel engine, acceleration in 4th gear, before and after treatment. | |||
| production state | optimzed NVH package | ||
