Some Problems in Speech and Acoustic Analysis in the Field of Otolaryngology

Speech and Voice Disorders

Abstract

This paper discusses some problems in using speech and acoustic analysis in the field of otolaryngology. First, general analysis conditions are discussed. Next, some analysis methods, their assumptions and models are explained. Last, several important points in utilization are discussed. Recently, many special devices and computer softwares for acoustic analysis have become available in the field of otolaryngology. Many studies using such acoustic analysis methods for evaluating speech and voice disorders have been reported. Since acoustic analysis methods are based on some assumptions and models of normal voice and speech, it is not easy to apply these methods to pathological voice and speech. Wrong methods, or insufficient conditions are sometimes used because of poor knowledge of acoustic analysis. Even if proper methods and sufficient conditions are used, results are sometimes wrongly comprehended because of poor knowledge of speech and language. It is very important to learn the sufficient knowledge of acoustic analysis, speech and language to select the analysis methods and comprehend the results properly.