Quantitative Evaluation of TMJ Sound by Frequency Analysis

Hiroshi SHIGA; Yoshinori KOBAYASHI

Quantitative Evaluation of TMJ Sound by Frequency Analysis

Hiroshi SHIGA, Yoshinori KOBAYASHI

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In order to evaluate quantitatively TMJ sound, TMJ sound in normal subject group, CMD patient group A with palpable sounds unknown to them, CMD patient group B with palpable sounds known to them, and CMD patient group C with audible sounds were detected by a contact microphone, and frequency analysis of the power spectra was performed. The power spectra of TMJ sound of normal subject group and patient group A showed patterns with frequency values below 100 Hz, whereas the power spectra of patient groups B and C showed distinctively different patterns with peaks of frequency component exceeding 100 Hz. As regards the cumulative frequency value, the patterns for each group clearly differed from those of other groups; in particular the 80% cumulative frequency value showed the greatest difference. From these results, it is assumed that the 80% cumulative frequency value can be used as an effective indicator for quantitative evaluation of TMJ sound.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E78-A No.12 pp.1683-1688

Publication Date: 1995/12/25

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Type of Manuscript: Special Section LETTER (Special Section on Acoustic Diagnosis)

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Hiroshi SHIGA, Yoshinori KOBAYASHI, "Quantitative Evaluation of TMJ Sound by Frequency Analysis" in IEICE TRANSACTIONS on Fundamentals, vol. E78-A, no. 12, pp. 1683-1688, December 1995, doi: .
Abstract: In order to evaluate quantitatively TMJ sound, TMJ sound in normal subject group, CMD patient group A with palpable sounds unknown to them, CMD patient group B with palpable sounds known to them, and CMD patient group C with audible sounds were detected by a contact microphone, and frequency analysis of the power spectra was performed. The power spectra of TMJ sound of normal subject group and patient group A showed patterns with frequency values below 100 Hz, whereas the power spectra of patient groups B and C showed distinctively different patterns with peaks of frequency component exceeding 100 Hz. As regards the cumulative frequency value, the patterns for each group clearly differed from those of other groups; in particular the 80% cumulative frequency value showed the greatest difference. From these results, it is assumed that the 80% cumulative frequency value can be used as an effective indicator for quantitative evaluation of TMJ sound.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/e78-a_12_1683/_p

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@ARTICLE{e78-a_12_1683,
author={Hiroshi SHIGA, Yoshinori KOBAYASHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Quantitative Evaluation of TMJ Sound by Frequency Analysis},
year={1995},
volume={E78-A},
number={12},
pages={1683-1688},
abstract={In order to evaluate quantitatively TMJ sound, TMJ sound in normal subject group, CMD patient group A with palpable sounds unknown to them, CMD patient group B with palpable sounds known to them, and CMD patient group C with audible sounds were detected by a contact microphone, and frequency analysis of the power spectra was performed. The power spectra of TMJ sound of normal subject group and patient group A showed patterns with frequency values below 100 Hz, whereas the power spectra of patient groups B and C showed distinctively different patterns with peaks of frequency component exceeding 100 Hz. As regards the cumulative frequency value, the patterns for each group clearly differed from those of other groups; in particular the 80% cumulative frequency value showed the greatest difference. From these results, it is assumed that the 80% cumulative frequency value can be used as an effective indicator for quantitative evaluation of TMJ sound.},
keywords={},
doi={},
ISSN={},
month={December},}

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TY - JOUR
TI - Quantitative Evaluation of TMJ Sound by Frequency Analysis
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1683
EP - 1688
AU - Hiroshi SHIGA
AU - Yoshinori KOBAYASHI
PY - 1995
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E78-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 1995
AB - In order to evaluate quantitatively TMJ sound, TMJ sound in normal subject group, CMD patient group A with palpable sounds unknown to them, CMD patient group B with palpable sounds known to them, and CMD patient group C with audible sounds were detected by a contact microphone, and frequency analysis of the power spectra was performed. The power spectra of TMJ sound of normal subject group and patient group A showed patterns with frequency values below 100 Hz, whereas the power spectra of patient groups B and C showed distinctively different patterns with peaks of frequency component exceeding 100 Hz. As regards the cumulative frequency value, the patterns for each group clearly differed from those of other groups; in particular the 80% cumulative frequency value showed the greatest difference. From these results, it is assumed that the 80% cumulative frequency value can be used as an effective indicator for quantitative evaluation of TMJ sound.
ER -