Vocal tract filtering and the "coo" of doves

Neville H. Fletcher, Tobias Riede, Gabriël J L Beckers, Roderick Suthers

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Ring doves (Streptopelia risoria) produce a "coo" vocalization that is essentially a pure-tone sound at a frequency of about 600 Hz and with a duration of about 1.5 s. While making this vocalization, the dove inflates the upper part of its esophagus to form a thin-walled sac structure that radiates sound to the surroundings. It is a reasonable assumption that the combined influence of the trachea, glottis and inflated upper esophagus acts as an effective band-pass filter to eliminate higher harmonics generated by the vibrating syringeal valve. Calculations reported here indicate that this is indeed the case. The tracheal tube, terminated by a glottal constriction, is the initial resonant structure, and subsequent resonant filtering takes place through the action of the inflated esophageal sac. The inflated esophagus proves to be a more efficient sound radiating mechanism than an open beak. The action of this sac is only moderately affected by the degree of inflation, although an uninflated esophagus is inactive as a sound radiator. These conclusions are supported by measurements and observations that have been reported in a companion paper.

Original languageEnglish
Pages (from-to)3750-3756
Number of pages7
JournalJournal of the Acoustical Society of America
Volume116
Issue number6
DOIs
StatePublished - Dec 2004

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esophagus
acoustics
glottis
trachea
radiators
bandpass filters
constrictions
tubes
harmonics
Vocal Tract
Sound
rings
Vocalization

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Vocal tract filtering and the "coo" of doves. / Fletcher, Neville H.; Riede, Tobias; Beckers, Gabriël J L; Suthers, Roderick.

In: Journal of the Acoustical Society of America, Vol. 116, No. 6, 12.2004, p. 3750-3756.

Research output: Contribution to journalArticle

Fletcher, Neville H. ; Riede, Tobias ; Beckers, Gabriël J L ; Suthers, Roderick. / Vocal tract filtering and the "coo" of doves. In: Journal of the Acoustical Society of America. 2004 ; Vol. 116, No. 6. pp. 3750-3756.
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