Models for Representing the Acoustic Radiation Impedance of the Mouth

Chalker D.A. and Mackerras D. (1985) Models for Representing the Acoustic Radiation Impedance of the Mouth. IEEE Transactions on Acoustics, Speech, and Signal Processing, 33 6: 1606-1609. doi:10.1109/TASSP.1985.1164744


Author Chalker D.A.
Mackerras D.
Title Models for Representing the Acoustic Radiation Impedance of the Mouth
Journal name IEEE Transactions on Acoustics, Speech, and Signal Processing   Check publisher's open access policy
ISSN 0096-3518
Publication date 1985-01-01
Sub-type Article (original research)
DOI 10.1109/TASSP.1985.1164744
Volume 33
Issue 6
Start page 1606
End page 1609
Total pages 4
Subject 1711 Signal Processing
Abstract The acoustic radiation impedance of the mouth is important in the production of speech in that it affects the amount of acoustic power radiated away from the mouth and it influences the acoustic response of the excited vocal tract. Five existing methods of modeling the acoustic radiation impedance of the mouth are: 1) the pulsating sphere, 2) the circular piston in an infinite baffle, 3) the circular piston in a spherical baffle, 4) an approximation by Fant, and 5) an approximation by Flanagan. A comparison has been carried out between the acoustic impedances as a function of frequency predicted by these models for mouth aperture areas of 0.9 and 5.0 cm2. The basis for comparison was the piston-in-a-spherical-baffle model. This model was chosen as being the most physically representative one which is computationally tractable, although it is by far the most computationally difficult of the models considered. Special precautions were needed to prevent errors due to arithmetic overflow. On the basis of the comparison, a new approximation is proposed. This new model is based on the piston-in-an-infinite-baffle model, but includes more terms than the Flanagan model, resulting in increased accuracy for higher frequencies and larger mouth apertures. Copyright
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 5 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 28 Jun 2016, 13:41:44 EST by System User