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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

Description

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]

dc.contributor.authorFletcher, Neville H.
dc.contributor.authorRiede, T
dc.contributor.authorSuthers, Roderick A
dc.date.accessioned2015-12-13T22:59:59Z
dc.identifier.issn0001-4966
dc.identifier.urihttp://hdl.handle.net/1885/83939
dc.description.abstractSome 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 be adjusted by varying the volume of the cavity, the beak gape, and perhaps the position of the tongue in the mouth. To produce nearly pure-tone song, the bird adjusts the frequency of this peak to coincide with the fundamental of the syringeal oscillation. The present paper provides the acoustical analysis underlying this behavior.
dc.publisherAcoustical Society of America
dc.sourceJournal of the Acoustical Society of America
dc.subjectKeywords: Distensible vocal cavity; Open beak; Oropharyngeal-esophageal cavity; Vocalization; Acoustic waves; Biodiversity; Biological organs; Natural frequencies; Oscillations; Resonance; Acoustics; acoustics; article; beak; esophagus; frequency analysis; model; m
dc.titleModel for Vocalization by a Bird with Distensible Vocal Cavity and Open Beak
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume119
dc.date.issued2006
local.identifier.absfor060603 - Animal Physiology - Systems
local.identifier.ariespublicationMigratedxPub12212
local.type.statusPublished Version
local.contributor.affiliationFletcher, Neville, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationRiede, T, Indiana University
local.contributor.affiliationSuthers, Roderick A, Indiana University
local.description.embargo2037-12-31
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage1005
local.bibliographicCitation.lastpage1011
local.identifier.doi10.1121/1.2159434
dc.date.updated2015-12-12T07:31:45Z
local.identifier.scopusID2-s2.0-31744440605
CollectionsANU Research Publications

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