New diagnostic methods of evaluation of voice activity for phoniatrists’ and speech therapists’ needs

Abstract

The aim of the study was to present new diagnostic methods of evaluation of voice activity for phoniatrists’ and speech therapists’ needs. The voice formation depends not only on the correct contraction and vibration of the vocal cords, which reinforce the acoustic Energy of the fundamental tone, but also on the function of the resonant cavities and articulatory organs, affecting the timbre and the production of sound elements of speech, that is sounds. The European Society of Laryngology has proposed a diagnostic protocol since 2001. It recommends: videolaryngostroboscopy (VLS), acoustic examination and voice self‑assessment, except for interview and physical examination. Examination of acoustic parameters allows for objective analysis of the larynx tone. This is an important and only advantage of this method. Comprehensive voice analysis includes subjective and objective examinations, evaluating, based on GRBAS scale, the voice character and different modifications of voice malfunction, that specify functional, emotional and physical condition of examined person, may determine how the extent of the voice disorder may affect quality of life. They allow to determine proper etiology, make a diagnosis, plan the treatment schedule and follow up voice disorder effects of treatment.

Keywords

• diagnostic methods
• evaluation of voice activity
• phoniatrists’ and speech therapists’ needs