title: Sound field calculation for rectangular sources.
abstract: A method is presented for calculation of the sound field from a rectangular continuous-wave source surrounded by a plane grid baffle. The approach is illustrated for square sources of 0.5, 1, 2, 5, 10, 20, and 100 lambda on a side. These results are compared to the sound fields produced by similarly sized circular sources. The beam widths and locations of on-axis minima are similar for the two sources, but the transverse pressure distribution is more uniform in the near-field of the square source. The effects of attenuation on the sound field of a square source are examined.
authors.affiliation: IBM T.J. Watson Res. Center, Yorktown Heights, NY.
authors.forename: K B
authors.initials: KB
authors.lastname: Ocheltree
authors.forename: L A
authors.initials: LA
authors.lastname: Frizzel