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๐ SIMILAR VOLUMES
expected to be approximately 4-5% higher than the equivalent period of 2001, although several key businesses are showing weakening demand, compared with earlier expectations, particularly in December 2002. The company, which is based in Philadelphia, Pennsylvania, USA, says that while its sales are
A method (tentatively called'the method of equivalent sound source') of predicting the sound attenuation achieved by multiple barriers with knife edges and/or right-angled wedges is proposed. This paper shows that the sound pressure level in the shadow region behind the multiple barriers can be obta
A numerical model, based on boundary element techniques, was used to solve the acoustic wave equation in two dimensions, in order to study the performance of various configurations of road traffic noise barriers. The mean insertion loss for a broadband road traffic noise source over a range of recei