Childers D G, Bae K S
Department of Electrical Engineering, University of Florida, Gainesville 32611.
IEEE Trans Biomed Eng. 1992 Jan;39(1):19-25. doi: 10.1109/10.108123.
The purpose of this research was to develop quantitative measures for the assessment of laryngeal function using speech and electroglottographic (EGG) data. We developed two procedures for the detection of laryngeal pathology: 1) a spectral distortion measure using pitch synchronous and asynchronous methods with linear predictive coding (LPC) vectors and vector quantization (VQ) and 2) analysis of the EGG signal using time interval and amplitude difference measures. The VQ procedure was conjectured to offer the possibility of circumventing the need to estimate the glottal volume velocity wave-form by inverse filtering techniques. The EGG procedure was to evaluate data that was "nearly" a direct measure of vocal fold vibratory motion and thus was conjectured to offer the potential for providing an excellent assessment of laryngeal function. A threshold based procedure gave 75.9 and 69.0% probability of pathological detection using procedures 1) and 2), respectively, for 29 patients with pathological voices and 52 normal subjects. The false alarm probability was 9.6% for the normal subjects.
本研究的目的是利用语音和电声门图（EGG）数据开发用于评估喉功能的定量方法。我们开发了两种检测喉部病变的程序：1）一种使用线性预测编码（LPC）向量和矢量量化（VQ）的基音同步和异步方法的频谱失真测量方法，以及2）使用时间间隔和幅度差测量方法对EGG信号进行分析。推测VQ程序有可能避免通过逆滤波技术估计声门体积速度波形的需要。EGG程序旨在评估“几乎”是声带振动运动直接测量的数据，因此推测其有可能提供对喉功能的出色评估。对于29例嗓音病变患者和52名正常受试者，基于阈值的程序使用程序1）和2）分别给出了75.9%和69.0%的病变检测概率。正常受试者的误报概率为9.6%。
