title: Reproduction of a higher-order circular harmonic field using a linear array of loudspeakers.
abstract: This paper presents a direct formula for reproducing a sound field consisting of higher-order circular harmonics with polar phase variation. Sound fields with phase variation can be used for synthesizing various spatial attributes, such as the perceived width or the location of a virtual sound source. To reproduce such a sound field using a linear loudspeaker array, the driving function of the array is derived in the format of an integral formula. The proposed function shows fewer reproduction errors than a conventional formula focused on magnitude variations. In addition, analysis of the sweet spot reveals that its shape can be asymmetric, depending on the order of harmonics.
authors.forename: Jung-Min
authors.initials: JM
authors.lastname: Lee
authors.forename: Jung-Woo
authors.initials: JW
authors.lastname: Choi
authors.forename: Yang-Hann
authors.initials: YH
authors.lastname: Kim