A Prototype System for Quantitative Assessment of Voice Fatigue

Abstract

In this paper we present a prototype system for measuring voice fatigue. Measurement system is equipped with an inertial sensor attached to the neck and a software for analysis of the recorded signals of larynx vibrations. The analysed parameters of the signal are: fundamental frequency and signal power before and after the voice fatigue. In the conducted experiments two groups were distinguished. In the first group there are professional singers, knowledgeable about voice emission techniques whereas in the second group there are individuals who are not using their voice professionally and are not familiar with voice hygiene rules. Analysis of the recorded larynx vibrations and changes of measured parameters show substantial differences between both groups. This fact proves, that the use of correct voice emission technique reduces the risk of voice fatigue or temporal voice disorders and proposed measurement system can be used as a long-term, non-invasive vocal stress monitoring system.

Segmentation of Glottal Images from High-Speed Videoendoscopy Optimized by Synchronous Acoustic Recordings

“…The most common diagnostic methods rely on acoustic voice measurements during sustained production of vocal sounds, termed phonation [8][9][10]. The parameters characterizing voice quality can be computed from microphone recordings of the produced voice [10,11], subglottal neck-surface accelerometer-based force measurements [12][13][14], or with an electroglottograph-an apparatus measuring the amount of electricity that passes through the larynx [15].…”