کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3478517 1233403 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preliminary study of acoustic analysis for evaluating speech-aid oral prostheses: Characteristic dips in octave spectrum for comparison of nasality
ترجمه فارسی عنوان
مطالعه مقدماتی تحلیل آکوستیک برای ارزیابی پروتز های خوراکی سخنرانی: تغییرات مشخصه در طیف اکتاو برای مقایسه نازایی
کلمات کلیدی
تجزیه و تحلیل صوتی، پروتزهای خوراکی، کمک های سخنرانی، نارسایی وریدی
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی پزشکی و دندانپزشکی (عمومی)
چکیده انگلیسی

Background/PurposeAcoustic analysis is often used in speech evaluation but seldom for the evaluation of oral prostheses designed for reconstruction of surgical defect. This study aimed to introduce the application of acoustic analysis for patients with velopharyngeal insufficiency (VPI) due to oral surgery and rehabilitated with oral speech-aid prostheses.MethodsThe pre- and postprosthetic rehabilitation acoustic features of sustained vowel sounds from two patients with VPI were analyzed and compared with the acoustic analysis software Praat.ResultsThere were significant differences in the octave spectrum of sustained vowel speech sound between the pre- and postprosthetic rehabilitation. Acoustic measurements of sustained vowels for patients before and after prosthetic treatment showed no significant differences for all parameters of fundamental frequency, jitter, shimmer, noise-to-harmonics ratio, formant frequency, F1 bandwidth, and band energy difference. The decrease in objective nasality perceptions correlated very well with the decrease in dips of the spectra for the male patient with a higher speech bulb height.ConclusionAcoustic analysis may be a potential technique for evaluating the functions of oral speech-aid prostheses, which eliminates dysfunctions due to the surgical defect and contributes to a high percentage of intelligible speech. Octave spectrum analysis may also be a valuable tool for detecting changes in nasality characteristics of the voice during prosthetic treatment of VPI.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Formosan Medical Association - Volume 114, Issue 10, October 2015, Pages 950–958
نویسندگان
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