The computer model IMPACT was developed at the “Centre de recherche en aménagement et développement” (CRAD). Universite Laval in the late 1980's. The model calculates traffic noise levels using original acoustical algorithms based on measured acoustical power levels of three types of vehicles: automobiles, heavy trucks, and buses. The model has also been used for research purposes to gain insight into the complex relationships involved in noise generation and propagation. Model applications have been made to traffic. industrial and railroad noise. In this study, the IMPACT model is used as an assessment method for predicting traffic noise levels and for evaluating noise barrier effectiveness.
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References
1.
Canada Mortgage and Housing Corporation: Road and Rail Noise: Effects on Housing. 1980.
2.
JohnsonD.R.SaundersE.G.: The evaluation of noise from freely flowing road traffic. J. Sound Vib., 7, 287–309, 1968.
3.
QuirtJ.D.: Effects of Road Traffic Noise on a Residential Community. National Research Council, Ottawa, 1977.
4.
RapinJ.M.: Noise from road traffic. Acoustique REEF-Volume II, pp. 108–164, CSTB, Grenoble, 1982. (in French).
5.
MigneronJ-G.Coll.: Evaluation of noise from road traffic in apartments facing urban motorways. Project CR 6585/MR, CRAD/SCHL7 Quebec. 1982. (in French).
6.
HalliwellR.E.QuirtJ.D.: Traffic Noise prediction. National Research Council of Canada, 1980.
7.
MigneronJ-G.Col.: Examples of the application and prospective uses of IMPACT software to model environmental noise from vehicle flow. International Seminar on Road Traffic Noise, Grenoble, September 1988 (Also found in Proc. Acoustics Week, Toronto, October 1988). (in French).
8.
MaekawaZ.: Noise reduction by screens. Applied Acousties1, 57–173, 1968.
BouchardCarolle: The perceived benefits of noise barriers. Ministrère des Transports, Gouvernement du Québec, 1994. (in Freneh).
11.
WuWeixiongMigneronJ.G.CÔTÉ, Pierre: New highway traffic noise prediction model IMPACT to determine the acoustic effects of noise barriers. Acoustic & Vibration ASIA′98, pp. 219–227, 1998.
12.
WuWeixiong: Impacts of Noise Barriers on Metropolitan Communities. Doctoral thesis, Laval University, 1999.
13.
MigneronJ-G.Coll.: Classification of residential areas in the Quebec region affected by heavy vehicle noise. Universite Laval, 1987. (in French).
14.
WuWeixiong: Acoustical Behavior of Lightweight walls. Canadian Acoustics, Vol. 26, No. 3, pp. 14–15, 1998.
