New Acoustic Test Facilities of BMW BMW AG

Format:

Conference/Event

Author/Creator:

Eilker, Rudolf, author.

Conference Name:

SAE Surface Vehicle Noise and Vibration Conference (1985-05-15 : Traverse City, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1985

Summary:

BMW has introduced new test stands for noise measurements on passenger cars and motorcycles.Information is given on room conditions, machinery equipment, sound levels, frequency ranges and types of measurement.The semi-anechoic room is designed for measuring the sound distribution emitted by a single vehicle. Road influence is simulated by a reflecting floor and a roller-dynamometer.The free field sound distribution in terms of distance and direction is measured in the anechoic room. This room has high-precision installations for sound source identification and noise mapping.The reverberation room serves to measure sound power emitted by the test object. Its second purpose is to subject the bodywork to a high-power external sound source and to measure the sound-deadening effect of the passenger compartment.In conclusion, the presentation provides reports on the initial experience with these test facilities

Notes:

Vendor supplied data

Publisher Number:

850992

Access Restriction:

Restricted for use by site license