|
KMID : 0917519990050010121
|
|
Journal of Speech Sciences
1999 Volume.5 No. 1 p.121 ~ p.139
|
|
|
The Comparison of the Acoustic and Aerodynamic Characteristics of PROVOX Voice and Esophageal Voice Produced by the Same Laryngectomee
|
|
|
|
|
Abstract
|
|
|
Our experimental subject was a laryngectomee who had undergone total laryngectomy with PROVOX^®insertion, and learned esophageal speech after the surgery, so he could produce both PROVOX^®voice and esophageal voice. With this subject´s production of PROVOX^®and esophageal voice, we are to compare the acoustic and aerodynamic characteristics of the two voices, under the same physical conditions of the same person.
As a result, the fundamental frequency of esophageal voice was 137.2 Hz and that of PROVOX^®was 97.5 Hz. PROVOX^®voice showed lower jitter, shimmer and NHR than esophageal voice, which means that PROVOX^®voice showed better voice quality than esophageal voice. In spectrographic analysis, the formation of formants and pseudoformants were more distinct in esophageal voice and several temporal aspects of acoutic features such as VOT and closure duration were more similar with normal voice in PROVOX^®voice. During the sentence utterance, esophageal voice showed longer pause or silence duration than PROVOX^®voice. Maximum phonation time andmean flow rate of PROVOX^®voice were much longer and larger than esophageal voice, but mean and range of sound pressure level, subglottic pressure and voice efficiency were similar in the two voice. Glottal resistance of esophageal voice was much larger than PROVOX^®voice which showed still larger glottal resistance than normal voice.
Keywords : PROVOX^® voice, esophageal voice, aerodynamics, laryngectiomee
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|