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Vehicle Anechoic Testing

With advances in room acoustics, test equipment simulation and signal processing, it is possible to conduct noise measurements indoors with a high degree of accuracy. IAC has been at the forefront of providing acoustic testing facilities to the automotive market.

Shake & Rattle Facilities

Shake and rattle facilities are typically used at the end of a production line before a vehicle leaves the factory but can also be performed in Hemi-Anechoic Chamber as part of vehicle development. The end of line variant is a final acoustic test to ensure there are no panels which squeak or rattle.

Pass By Anechoic Chambers

Road traffic noise is a main contributor to environmental noise, thus, it is intended to be reduced and limited by legislation in order to increase health and life quality. Vehicle pass-by noise tests are conducted according to the international standard ISO 362, which quantifies the noise emission of a vehicle in an urban traffic environment, by testing on an outdoor track.

Powertrain Anechoic Chambers

Powertrain testing is typically carried out inside a hemi-anechoic chamber to ensure high acoustic absorbency. A typical layout for powertrain test cells is with 2 or 4 independent dynamometers sitting outside of the test chamber, leaving only the engine and gearbox inside the hemi-anechoic room. IAC powertrain chambers allow functional testing of various powertrain and transmission types in a virtual vehicle environment.

Engine Test Cells

Engine Noise Test Cells (ENTC's) are typically environments for testing a standalone engine. Usually hemi-anechoic in design, an ENTC shares many characteristics with IAC VSAC chambers, but without a chassis dynamometer.

Listening Rooms

IAC Acoustics produces listening rooms for testing the sound quality of various noises associated with a certain vehicle. These important facilities play a large part in the R&D process, utilising first hand market research data.

Anechoic Ventilation Systems

A ventilation system must provide adequate air circulation at sound pressure levels below design criterion. IAC Quiet-vent® silencing systems are designed to provide approximately 15 air changes per hour in a typical anechoic facility.

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