Objective Evaluation of Vocal Pathology Using Voice Spectrography

Publisher Website
Google Scholar
Abstract
Permanent objective evaluation of vocal changes associated with laryngeal pathology is a goal which has been difficult for the laryngologist and speech pathologist to attain. Most attempts at achieving objective records have focused on direct visual examination of the larynx using techniques such as high speed photography, x-ray studies or histologic sectioning. However, the important subjective qualities of the voice are difficult to translate into objective visual patterns. In order to produce these patterns, certain individual components of the voice (i.e., breathiness, periodicity and formant structure) must be analyzed. Recently, modifications of the sound spectrograph have enabled the clinician to objectively visualize these components. The patterns produced by the spectrograph may be applied to a variety of clinical situations. For example, the technique aids greatly in determining the success or failure of medical and surgical management for vocal cord lesions. Secondly, voice spectrography can readilv show improvements or deficiencies in vocal rehabilitation for functional dysphonia. Lastly, this method provides an objective, permanent record of the voice which may be useful from a medicolegal standpoint. Sound spectrographic analysis of vocal pathology is an important diagnostic tool for the clinician. Its future use should be encouraged as a more precise aid in the evaluation of the voice.

This publication has 8 references indexed in Scilit: