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Effects of healthy lingual local sense on formant frequencies of Persian vowels
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| Omid Mohamadi *, Mohamad Rahimi Mediseh, A. li Saadolahi, Raheb Ghorbani |
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Abstract: (4964 Views) |
| Introduction: In order to evaluate the effects of
healthy lingual local sense on the phonetic quality of Persian vowels, changes
in their main acoustic features were analyzed following local anesthesia the
surface and sides of the tongue to partly block the normal neural feedback
mechanisms in speech. Materials and Methods: Six Persian vowels (/a/, /o/, /u/, /e/, /i/, /æ/) were prolonged 3 times
using habitual loudness with and without lingual local anesthesia (Lidocaine
Hydrochloride Oral Topical Solution, USP (Viscous) 2%) by 5 male speakers. The
formant frequencies of vowels (F1and F2) were analyzed and compared using the
Speech Studio Package (Laryngograph Ltd). Results: The difference between mean values of F1 and F2 before
and after lingual local anesthesia were not statistically different for the
/a/, /æ/ and /u/ vowels (p0.05). Conclusion: According to our results, lingual local sense has effects on the
production of some Persian vowels. Perhaps the healthy local sense of the
tongue and normal articulatory models has an important role in the production
of vowels. |
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| Keywords: Local anesthesia, Speech acoustics, Iran |
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Full-Text [PDF 183 kb]
(924 Downloads)
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Type of Study: Research |
Subject:
General
Received: 2013/07/20 | Accepted: 2014/06/11 | Published: 2014/06/11
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