THE FOCUSSED VERTICAL ARRAY FOR THE DESCRIPTION OF THE NOISE SOURCES ON A MOVING CAR

Knowledge of the height of sources concerns vehicle description as input parameter for traffic noise prediction models and design of noise barriers. The beamformed array has become a common measurement device for locating noise sources on vehicles. It is pointed out how measuring over reflecting road surface may disturb the interpretation of beamforming results. A passenger car is studied over a wide range of driving conditions (speed, gear, engine rpm). The main part of noise is coming from an area located under the car chassis. It includes rolling noise and mechanical noise, whose relative weight depends on speed and gear. A second weaker source is located near the upper part of the front wheel, and cannot be attributed to the motor noise only. For the covering abstract see ITRD E107776.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/2951561903
• Corporate Authors:

  SOCIETE FRANCAISE D'ACOUSTIQUE

  23 AVENUE BRUNETIERE
  PARIS,   France  75017
• Authors:
  • PALLAS, M-A
• Conference:
  • INTERNOISE 2000. PROCEEDINGS OF THE 29TH INTERNATIONAL CONGRESS ON NOISE CONTROL ENGINEERING, HELD 27-31 AUGUST 2000, NICE, FRANCE.
• Publication Date: 2000

Language

• English

Media Info

• Features: References;
• Pagination: p. 67-72
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Automobiles; Measurement; Motion; Moving industry; Sound level; Vehicles
• ITRD Terms: 1243: Car; 6136: Measurement; 9050: Moving; 6747: Sound level; 1255: Vehicle
• Subject Areas: Freight Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00805369
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 2-9515619-0-3
• Files: ITRD
• Created Date: Feb 7 2001 12:00AM