On the application of well-known diffraction models to the sound field in the shadow zone of an isolated building

摘要

As traffic volume around residential areas increases, highway noise barriers have become an integral part of urban and suburban living. Both of these occurrences have led, in part, to a significant volume of literature on models designed to predict the pressure diffracted behind a wedge or barrier [1-4]. A recent experimental effort to study the sound field around an isolated building has shown, as might be expected, evidence for effects that are likely due to diffraction [5,6]. It is conceivable that the pressure behind a building could be estimated by some of the diffraction models used with wedges and noise barriers. This letter presents the application to the pressure behind a building of two well-known barrier models, the frequency domain model of Pierce [7] and the time domain model of Biot and Tolstoy [8] that was further discussed by Medwin [9,10] and will be referred to here as the BTM model as in Ref. [3].