HIGH-SPEED SIMULTANEOUS ANALYSIS OF VOCAL FOLD VIBRATION AND VOICE SIGNAL FOR THE DIAGNOSIS OF VOICE DISORDERS

研究机构开发了一种用于分析声带振动的高速成像系统。在本系统中，一个专门设计的侧视喉远距离内窥镜连接到一个单一的les反射相机。固态图像传感器连接到相机的后盖。当快门被释放时，在计算机控制下进行图像扫描，并且图像信号通过高速A/D转换器存储在图像存储器中。在数据存储之后，图像可以再现并显示在CRT屏幕上或记录在录像机上。记录声带振动在运行语音的瞬态分析也开发了附加一个纤维镜的系统与修改的图像传感器。此外，声信号和EGG信号的同时记录作出了评估的声乐pathology.A本系统的应用分析病理喉已被证明是有前途的。声门闭合不全和不对称或不规则的振动模式在临床异常嗓音病例中很容易被识别。与传统的声带振动记录系统相比，本系统记录和分析声带振动的过程简单，成本低廉。该系统可以非常有效地同时分析声带振动和病理声音。

A high-speed imaging system for the analysis of vocal fold vibration was developed in the investigators' institution. In the present system, a specially designed lateral-viewing laryngeal tele-endoscope is attached to a single-les reflex camera. A solid-state image sensor Is attached to the back-lid of the camera. When the shutter is released, an image scan is made under computer control, and image signals are stored in an image memory through a high-speed A/D converter. After the data strage, the images can be reproduced and displayed on a CRT screen or recorded on a video recorder. Recording of vocal fold vibration during running speech for the analysis of a transient state was also developed by attaching a fiberscope to the system with modification of the image sensor. Further, simultaneous recordings of acoustic signals and EGG signals were made for the assessment of vocal pathology.An application of the present system for the analysis of pathological larynx has proved promising. Incomplete glottal closure and asymmetrical or irregular vibratory patterns were easily identified in clinical cases with abnormal voice. The procedure for the recording and analysis of vocal fold fold vibration with the present system are simple and less expensive compared with conventional sliming system. This system has made it possible to perform simultaneous analysis of vocal fold vibration and pathological voices very effectively.