연결발화에서 마비말화자의 음질 특성
Voice Quality of Dysarthric Speakers in Connected Speech
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참고문헌
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초록
This study investigated the perceptual and cepstral/spectral characteristics of phonation and their relationships in dysarthria in connected speech. Twenty-two participants were divided into two groups; the eleven dysarthric speakers were paired with matching age and gender healthy control participants. A perceptual evaluation was performed by three speech pathologists using the GRBAS scale to measure the cepstrual/spectral characteristics of phonation between the two groups’ connected speech. Correlations showed dysarthric speakers scored significantly worse (with a higher rating) with severities in G (overall dysphonia grade), B (breathiness), and S (strain), while the smoothed prominence of the cepstral peak (CPPs) was significantly lower. The CPPs were significantly correlated with the perceptual ratings, including G, B, and S. The utility of CPPs is supported by its high relationship with perceptually rated dysphonia severity in dysarthric speakers. The receiver operating characteristic (ROC) analysis showed that the threshold of 5.08 dB for the CPPs achieved a good classification for dysarthria, with 63.6% sensitivity and the perfect specificity (100%). Those results indicate the CPPs reliably distinguished between healthy controls and dysarthric speakers. However, the CPP frequency (CPP F0) and low-high spectral ratio (L/H ratio) were not significantly different between the two groups.
Abstract
This study investigated the perceptual and cepstral/spectral characteristics of phonation and their relationships in dysarthria in connected speech. Twenty-two participants were divided into two groups; the eleven dysarthric speakers were paired with matching age and gender healthy control participants. A perceptual evaluation was performed by three speech pathologists using the GRBAS scale to measure the cepstrual/spectral characteristics of phonation between the two groups’ connected speech. Correlations showed dysarthric speakers scored significantly worse (with a higher rating) with severities in G (overall dysphonia grade), B (breathiness), and S (strain), while the smoothed prominence of the cepstral peak (CPPs) was significantly lower. The CPPs were significantly correlated with the perceptual ratings, including G, B, and S. The utility of CPPs is supported by its high relationship with perceptually rated dysphonia severity in dysarthric speakers. The receiver operating characteristic (ROC) analysis showed that the threshold of 5.08 dB for the CPPs achieved a good classification for dysarthria, with 63.6% sensitivity and the perfect specificity (100%). Those results indicate the CPPs reliably distinguished between healthy controls and dysarthric speakers. However, the CPP frequency (CPP F0) and low-high spectral ratio (L/H ratio) were not significantly different between the two groups.
참고문헌 (26)
- Awan, S. N., "Acoustic prediction of voice type in women with functional dysphonia", J Voice, 19(2), pp.268~282 (2005)
- Voice quality and variation: a pilot study of the Liverpool accent, "Coadou, M.", Speech Prosody, ~, pp.paper 123 (2006)
- Darley, F. L., "Differential diagnostic patterns of dysarthria", J Speech Hear Res, 12(2), pp.246~269 (1969)
- Duffy, J. R., "Motor speech disorders: substrates, differential diagnosis, and management" (1995), Mosby
- Eadie, T. L., "The effect of perceptual training on inexperienced listeners' judgments of dysphonic voice", J Voice, 20(4), pp.527~544 (2006)
- Gobl, C., "Voice source variation and its communicative functions, In The handbook of phonetic sciences", pp.379~423 (2010), Wiley-Blackwell
- Haderlein, T., "Automatic rating of hoarseness by text-based cepstral and prosodic evaluation", Proceedings of the 15th International Conference on Text, Speech and Dialogue, pp.573~580 (2012)
- Heman-Ackah, Y. D., "The relationship between cepstral peak prominence and selected parameters of dysphonia", J Voice, 16(1), pp.20~27 (2002)
- "cpps.exe" (1996)[URL]
- Hillenbrand, J., "Acoustic correlates of breathy vocal quality : dysphonic voices and continuous speech", J Speech Hear Res, 39(2), pp.311~321 (1996)
- Hirose, H., "Investigating the Physiology of Laryngeal Structures, In The handbook of phonetic sciences", pp.130~152 (2010), Wiley-Blackwell
- 정금수, "자폐 범주성 장애아동과 정상아동의 평서문 읽기에서의 운율구 특성 비교", 말소리, 1(65), pp.51~65 (2008), 대한음성학회
- Kent, R. D., "Voice dysfunction in dysarthria : application of the Multi-Dimensional Voice Program", J Commun Disord, 36(4), pp.281~306 (2003)
- Kent, R. D., "Acoustic studies of dysarthric speech : methods, progress, and potential", J Commun Disord, 32(3), pp.141~186 (1999)
- Laver, John, "The phonetic description of voice quality" (1980), Cambridge University Press
- Leino, T., "Long-term average spectrum in screening of voice quality in speech : untrained male university students", J Voice, 23(6), pp.671~676 (2009)
- Lowell, S. Y., "Spectral- and cepstral-based measures during continuous speech: capacity to distinguish dysphonia and consistency within a speaker", J Voice, 25(5), pp.e223~e232 (2011)
- Lowell, S. Y., "Spectral-and cepstral-based acoustic features of dysphonic, strained voice quality", Ann Otol Rhinol Laryngol, 121(8), pp.539~548 (2012)
- Mendoza, E., "The long-term average spectrum as a measure of voice stability", Folia Phoniatr Logop, 48(2), pp.57~64 (1996)
- Moers, C., "Vowel-and text-based cepstral analysis of chronic hoarseness", J Voice, 26(4), pp.416~424 (2012)
- Nordstrom, K, I., "Transforming high-effort voices into breathy voices using adaptive pre-emphasis linear prediction", 박사, pp.2008
- Revis, J., "Comparison of different voice samples for perceptual analysis", Folia Phoniatr Logop, 51(3), pp.108~116 (1999)
- 서인효, "연결발화에서 마비말장애의 음질특성", 2013 한국음성학회 봄 학술대회 발표논문집, pp.100~101 (2013)
- 서인효, "병리적 속삭임음성과 정상적 음성의 후두부 과노력에 대한 비교", 2012 한국음성학회 가을 학술대회 발표논문집, pp.174~175 (2012)
- Wang, Y. T., "Acoustic analysis of voice in dysarthria following stroke", Clin Linguist Phon, 23(5), pp.335~347 (2009)
- Watts, C. R., "Use of spectral", cepstral analyses for differentiating normal from hypofunctional voices in sustained vowel and continuous speech contexts, 2011, pp.54(6), 1525~1537