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Comparison of sound reproduction using higher order loudspeakers and equivalent line arrays in free-field conditions

Poletti, Mark; Betlehem, Terence; Abhayapala, Thushara


Higher order sound sources of Nth order can radiate sound with 2N + 1 orthogonal radiation patterns, which can be represented as phase modes or, equivalently, amplitude modes. This paper shows that each phase mode response produces a spiral wave front with a different spiral rate, and therefore a different direction of arrival of sound. Hence, for a given receiver position a higher order source is equivalent to a linear array of 2N + 1 monopole sources. This interpretation suggests performance...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Journal of the Acoustical Society of America
DOI: 10.1121/1.4883363


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