The Impact of Contrastive Stress on Vowel Acoustics and Intelligibility in Dysarthria

被引:17
作者
Connaghan, Kathryn P. [1 ]
Patel, Rupal [1 ]
机构
[1] Northeastern Univ, Boston, MA 02115 USA
来源
JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH | 2017年 / 60卷 / 01期
基金
美国国家卫生研究院;
关键词
INTENSIVE VOICE TREATMENT; SPEAKING YOUNG-ADULTS; TREATMENT LSVT LOUD; CEREBRAL-PALSY; SPEECH-INTELLIGIBILITY; CONVERSATIONAL SPEECH; NORMAL-HEARING; PARKINSONS-DISEASE; TALKER DIFFERENCES; RATE REDUCTION;
D O I
10.1044/2016_JSLHR-S-15-0291
中图分类号
R36 [病理学]; R76 [耳鼻咽喉科学];
学科分类号
100104 ; 100213 ;
摘要
Purpose: To compare vowel acoustics and intelligibility in words produced with and without contrastive stress by speakers with spastic (mixed-spastic) dysarthria secondary to cerebral palsy (DYSCP) and healthy controls (HCs). Method: Fifteen participants (9 men, 6 women; age M = 42 years) with DYSCP and 15 HCs (9 men, 6 women; age M = 36 years) produced sentences containing target words with and without contrastive stress. Forty-five healthy listeners (age M = 25 years) completed a vowel identification task of DYSCP productions. Vowel acoustics were compared across stress conditions and groups using 1st (F1) and 2nd (F2) formant measures. Perceptual intelligibility was compared across stress conditions and dysarthria severity. Results: F1 and F2 significantly increased in stressed words for both groups, although the degree of change differed. Mean Euclidian distance between vowels also increased with stress. The relative probability of vowels falling within the target F1 x F2 space was greater for HCs but did not differ with stress. Stress production resulted in greater listener vowel identification accuracy for speakers with mild dysarthria. Conclusions: Contrastive stress affected vowel formants for both groups. Perceptual results suggest that some speakers with dysarthria may benefit from a contrastive stress strategy to improve vowel intelligibility.
引用
收藏
页码:38 / 50
页数:13
相关论文
共 78 条
[1]  
[Anonymous], J ACOUSTICAL SOC AM
[2]  
[Anonymous], INTERSPEECH 2009
[3]  
[Anonymous], J SPEECH LANGUAGE HE
[4]  
[Anonymous], 1976, CONT ISSUES EXPT PHO
[5]   ACOUSTIC-PHONETIC CONTRASTS AND INTELLIGIBILITY IN THE DYSARTHRIA ASSOCIATED WITH MIXED CEREBRAL-PALSY [J].
ANSEL, BM ;
KENT, RD .
JOURNAL OF SPEECH AND HEARING RESEARCH, 1992, 35 (02) :296-308
[6]   Clinical and MRI correlates of cerebral palsy - The European Cerebral Palsy Study [J].
Bax, Martin ;
Tydeman, Clare ;
Flodmark, Olof .
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 2006, 296 (13) :1602-1608
[7]  
Boersma P., 2009, Praat: doing phonetics by computer (version 5.1.13), DOI DOI 10.1097/AUD.0B013-31821473F7
[8]   Individual and environmental contributions to treatment outcomes following a neuroplasticity-principled speech treatment (LSVT LOUD) in children with dysarthria secondary to cerebral palsy: A case study review [J].
Boliek, Carol A. ;
Fox, Cynthia M. .
INTERNATIONAL JOURNAL OF SPEECH-LANGUAGE PATHOLOGY, 2014, 16 (04) :372-385
[9]   Intelligibility of normal speech .1. Global and fine-grained acoustic-phonetic talker characteristics [J].
Bradlow, AR ;
Torretta, GM ;
Pisoni, DB .
SPEECH COMMUNICATION, 1996, 20 (3-4) :255-272
[10]   Prosodic strengthening and featural enhancement: Evidence from acoustic and articulatory realizations of (a,i) in English [J].
Cho, TH .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2005, 117 (06) :3867-3878