摘要
目的探讨内收型痉挛性发音障碍的语音特征。方法采用嗓音和语音的声信号和三维语图分析及主观评价的方法对10例内收型痉挛性发音障碍患者（女7例，男3例）的语音特征与10例健康志愿者（男5例，女5例）进行对比。结果内收型痉挛性发音障碍主要表现为音质、音韵及语音的流畅性改变，在朗读文章时出现紧张性发音困难，语音颤抖，频率及响度瞬间起伏，嗓音挤卡、中断，语音延长，失去正常韵律。10例患者中表现为轻度障碍者（异常音节数〈25％）1例，中度障碍（异常音节数占25％～49％）6例，重度（异常音节数占50％～74％）1例，极重度（异常音节数≥75％）2例。10例患者朗读时间中位数为49s，声信号中间断出现无音区，无音比率中位数为42％；而健康对照组朗读时间中位数为30s，无声音中断。在三维语图中不同的患者在各自症状音节中可以看到嗓音起始时间延长，元音共振峰不规则、断裂甚至消失，症状音节的辅音缺失，或塞擦音的擦音成分延长等。结论内收型痉挛性发音障碍语音特征为音质、音韵及语音的流畅性改变，在症状音节的三维语图中可以看到相应的元音或辅音音素的特征性改变。
Objective To explore the acoustic characteristics of adductor spasmodic dysphonia. Methods The acoustic characteristics, including acoustic signal of recorded voice, three-dimensional sonogram patterns and subjective assessment of voice, between 10 patients （7 women,3 men） with adductor spasmodic dysphonia and 10 healthy volunteers （5 women,5 men） , were compared. Results The main clinical manifestation of adductor spasmodic dysphonia included the disorders of sound quality, rhyme and fluency. It demonstrated the tension dysphonia when reading, acoustic jitter, momentary fluctuation of frequency and volume, voice squeezing, interruption, voice prolongation, and losing normal chime. Among 10 patients, there were 1 mild dysphonia （abnormal syllable number 〈 25% ）, 6 moderate dysphonia （ abnormal syllable number 25% - 49% ）, 1 severe dysphonia （ abnormal syllable number 50% - 74% ） and 2 extremely severe dysphonia （abnormal syllable number ≥ 75% ）. The average reading time in 10 patients was 49 s, with reading time extension and aphasia area interruption in acoustic signals, whereas the average reading time in health control group was 30 s, without voice interruption. The aphasia ratio averaged 42%. The respective symptom syllable in different patients demonstrated in the three-dimensional sonogranr There were voice onset time prolongation, irregular, interrupted and even absent vowel formants. The consonant of symptom syllables displayed absence or prolongation of friction murmur in the block-friction murmur occasionally. Conclusions The acoustic characteristics of adductor spasmodic dysphonia is the disorders of sound quality, rhyme and fluency. The three-dimensional sonogram of the symptom syllables show distinctive changes of proportional vowels or consonant phonemes.
出处
《中华耳鼻咽喉头颈外科杂志》
CAS
CSCD
北大核心
2008年第6期419-423,共5页
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
基金
留学回国人员科研启动基金[教外司留（1994）747号]
辽宁省教育厅高等学校科研项目（05L457）.志谢 本研究及论文撰写过程中得到中国社会科学院民族研究所研究员、国际语音协会理事鲍怀翘老师的大力帮助和指导.
关键词
发音障碍
声带
痉挛
语音质量
Articulation disorders
Vocal cords
Spasm
Voice quality
