The Computer Based Acoustic Analysis of Speech Sounds for Assessing Motor Speech Disorders.

提出了一种基于计算机的语音声学分析方法，用于运动性言语障碍的评估。本文还讨论了声学分析结果与言语治疗师判断的听觉感知分析结果之间的关系。本研究的言语样本由框架句“I I apapa desu”和“I I akaka desu”组成，其中含有辅音/p/和/k/。并从患者中获得自由话语。本文对46例运动性言语障碍患者和66例正常人进行了言语材料的测试。声学分析的参数为语音的功率变化、语音的频谱变化速度、基频变化率、帧语句的持续时间和DP匹配法的值。听知觉分析项目为言语节奏、语速、不精确辅音、言语清晰度和奇异度、运动性言语障碍的严重程度辅音的不精确度与语音的强弱变化、辅音的奇异度与框架句的持续时间有很高的相关性，言语清晰度和基频变化率，以及运动性言语障碍的严重程度与DP匹配值之间的关系。这些结果表明，拟议的语音声学分析评估运动性言语障碍可能会帮助经验不足的言语治疗师，以客观地评估运动性言语障碍患者的言语。

The computer based acoustic analysis of speech sounds for assessing motor speech disorders was proposed. The relationship between the results of acoustic analysis and that of auditory perceptual analysis judged by speech therapists were also discussed.The speech samples of this sturdy were consisted of frame sentences "I I apapa desu" and "I I akaka desu" which contained consonants /p/ and /k/. And the free utterances were also obtained from the patients. The speech materials were obtained from 46 patients with motor speech disorders and 66 normal people as controls. The parameters for acoustic analysis were the power change of speech sound, the spectrum change speed of speech sound, the ratio of fundamental frequency change, the duration of the frame sentences and the values by DP matching method. The items of auditory perceptual analysis were the rhythm of speech, the rate of speech, the imprecise consonants, the speech intelligibility and bizarreness, the severity of motor speech disorders (sum of the scale values of bizarreness and intelligibility).There were high correlation between the imprecise consonants and the power change of speech sound, the bizarreness and the duration of the frame sentences, the speech intelligibility and the ratio of fundamental frequency change, and between the severity of motor speech disorders and the values by DP matching method. These results suggested that the proposed acoustic analysis of speech sounds for assessing motor speech disorders may help inexperienced speech therapists to evaluate the speech of patients with motor speech disorders objectively.