Reciprocity in the scattering coefficients of acoustic waveguide modes

Yuhui Tong, Jie Pan

Research output: Contribution to journalArticle

2 Citations (Scopus)


In this Letter, a proof is provided for the reciprocity between modal scattering coefficients of the acoustic waveguides connected by a junction enclosure. The result holds for all waveguide modes and for junction enclosures with locally reactive boundary conditions away from the interfaces between the junction and waveguides. Also provided is a physical interpretation of the reciprocity of the modal scattering coefficients. The scattering of two-dimensional waveguide modes by a right-angled bend in a rectangular duct is used as an illustrating example. © 2013 Acoustical Society of America.
Original languageEnglish
Pages (from-to)1731-1734
JournalJournal of the Acoustical Society of America
Issue number3
Publication statusPublished - 2013

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