声带振动功能模式识别的研究  

Study on Identification of Vocal Cords Vibration Functions and Modes

作　　者：赵守国[1] 王素品[2] 孙义和[1] 

机构地区：[1]清华大学微电子学研究所,北京100084 [2]西安交通大学生命科学与技术学院

出　　处：《西安交通大学学报》2002年第12期1258-1261,1274,共5页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(30070212);中国博士后基金资助项目.

摘　　要：应用小波变换估计传导语音的谐波噪声比,研究了不同发声方式、发音及声带病变对传导语音谐波噪声比的影响,并与口腔语音的谐波噪声比进行了对比研究,发现发不同元音时,传导语音谐波噪声比的变化范围是5dB,口腔语音谐波噪声比的变化范围为20dB;不同发声方式的传导语音谐波噪声比的变化范围可达18dB,口腔语音的变化范围为12dB.从结果可以看出,传导语音谐波噪声比能够更好地反映声带振动模式,是一种研究声带振动功能和模式及喉部疾病诊断的有效方法.The estimation of harmonic to noise ratio(HNR) in transmitted sound signals by wavelet transform was proposed.When normal and laryngeal pathological subjects phonate sustained vowels in breathy, falsetto, leakage and pressed modes in normal loudness, these HNRs in transmitted sound signals are estimated and compared with the HNR in human voice. For normal subjects in a variety of vowels, the variation of HNR in transmitted sound signals is within 5 dB, and in human voice signals is within 20 dB. For normal subject in a variety of phonation modes, the variation of HNR in transmitted sound signals exceeds 18 dB and in human voice signals is within 12 dB.The results indicate that the NHR in transmitted sound signals could more accurately image vocal cords vibration characteristics and could be an effective measurement for studying vocal cords vibration and clinical laryngeal disease diagnosis.

关 键 词：声带振动 口腔语音 传导语音 谐波噪声比 小波变换 喉部疾病诊断 发声方式 振动功能 振动模式 

分 类 号：R767.04[医药卫生—耳鼻咽喉科]