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J Acoust Soc Am. 2017 Oct;142(4):EL337. doi: 10.1121/1.5002078.

Acoustic reciprocity: An extension to spherical harmonics domain.

Author information

1
Research School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2601, Australia prasanga.samarasinghe@anu.edu.au, thushara.abhayapala@anu.edu.au.
2
School of Electrical Engineering and Automation, University of Erlangen-Nuremberg, Cauerstra├če 7, 91058 Erlangen, Germany walter.kellermann@fau.de.

Abstract

Acoustic reciprocity is a fundamental property of acoustic wavefields that is commonly used to simplify the measurement process of many practical applications. Traditionally, the reciprocity theorem is defined between a monopole point source and a point receiver. Intuitively, it must apply to more complex transducers than monopoles. In this paper, the authors formulate the acoustic reciprocity theory in the spherical harmonics domain for directional sources and directional receivers with higher order directivity patterns.

PMID:
29092587
DOI:
10.1121/1.5002078

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