PMID: 12153454Aug 3, 2002Paper

Digital acoustic analysis of five vowels in maxillectomy patients

Journal of Oral Rehabilitation
Yuka I SumitaH Taniguchi


The aim of the study was to characterize the acoustics of vowel articulation in maxillectomy patients. Digital acoustic analysis of five vowels, /a/, /e/, /i/, /o/ and /u/, was performed on 12 male maxillectomy patients and 12 normal male individuals. A simple set of acoustic descriptions called the first and second formant frequencies, F1 and F2, were employed and calculated based on linear predictive coding. The maxillectomy patients had a significantly lower F2 for all five vowels and a significantly higher F1 for only /i/ vowel. From the data plotted on an F1-F2 plane in each subject, we determined the F1 range and the F2 range, which are the differences between the minimum and the maximum frequencies among the five vowels. The maxillectomy patients had a significantly narrower F2 range than the normal controls. In contrast, there was no significant difference in the F1 range. These results suggest that the maxillectomy patients had difficulty in controlling F2 properly. In addition, the speech intelligibility (SI) test was performed to verify the results of this new frequency range method. A high correlation between the F2 range and the score of SI test was demonstrated, suggesting that the F2 range is effective in evaluat...Continue Reading


Jul 19, 2011·The Angle Orthodontist·Mavis Emel Kulak KayikciSoner Ozkan
Feb 28, 2014·TheScientificWorldJournal·Mariko HattoriHisashi Taniguchi
Apr 30, 2009·Clinical Linguistics & Phonetics·Emel Sari, Mehmet Akif Kiliç
Sep 22, 2009·Journal of Voice : Official Journal of the Voice Foundation·Ken InoharaHisashi Taniguchi
Sep 8, 2010·Journal of Oral Rehabilitation·H B KwonS H Lee
May 16, 2015·Journal of Oral Rehabilitation·M E ElbashtiH Taniguchi
Jul 30, 2015·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Takafumi OtomaruHisashi Taniguchi
Aug 26, 2011·Logopedics, Phoniatrics, Vocology·Marieke de BruijnIrma Verdonck-de Leeuw
May 21, 2010·Journal of Prosthodontic Research·Nafees Uddin ChowdhuryHisashi Taniguchi
Jun 29, 2016·The Journal of Advanced Prosthodontics·Mahmoud ElbashtiHisashi Taniguchi
Aug 11, 2016·European Journal of Orthodontics·Ezgi AtikSemra Ciger
Oct 4, 2016·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Mahmoud E ElbashtiHisashi Taniguchi
Dec 7, 2017·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Mahmoud E ElbashtiHisashi Taniguchi
Dec 3, 2017·Journal of Oral Rehabilitation·A KamiyanagiH Taniguchi
Dec 6, 2017·Journal of Oral Rehabilitation·Y I SumitaH Taniguchi

❮ Previous
Next ❯

Related Concepts

Trending Feeds


Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.


Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.


Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.