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Model for Vocalization by a Bird with Distensible Vocal Cavity and Open Beak

Fletcher, Neville H.; Riede, T; Suthers, Roderick A


Some birds make use of a distensible oral cavity to produce nearly pure-tone song. Songbirds such as the Northern cardinal (Cardinalis cardinalis) have a muscularly distended oropharyngeal-esophageal cavity between the top of the trachea and the open beak. The present paper analyzes the acoustics of this vocal system. It is shown that the resonance of the oropharyngeal-esophageal cavity, vented through the beak, introduces a dominant peak in the radiation efficiency, the frequency of which can...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Journal of the Acoustical Society of America
DOI: 10.1121/1.2159434


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