title: A convolution model for computing the far-field directivity of a parametric loudspeaker array.
abstract: This paper describes a method to compute the far-field directivity of a parametric loudspeaker array (PLA), whereby the steerable parametric loudspeaker can be implemented when phased array techniques are applied. The convolution of the product directivity and the Westervelt's directivity is suggested, substituting for the past practice of using the product directivity only. Computed directivity of a PLA using the proposed convolution model achieves significant improvement in agreement to measured directivity at a negligible computational cost.
authors.affiliation: Department of Electrical and Electronic Engineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka Prefecture, 564-8680, Japan.
authors.forename: Chuang
authors.initials: C
authors.lastname: Shi
authors.affiliation: Department of Electrical and Electronic Engineering, Kansai University, 3-3-35 Yamatecho, Suita, Osaka Prefecture, 564-8680, Japan.
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Kajikawa
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D000669:Amplifiers, Electronic; D003198:Computer Simulation; D004867:Equipment Design; D008962:Models, Theoretical; D009038:Motion; D011312:Pressure; D013016:Sound; D013997:Time Factors; D014160:Transducers, Pressure