Empirical study to test the independence of different acoustic voice parameters on a large voice database
Dirk Michaelis, Hans Werner Strube · 1995
A new acoustic parameter for the description of hoarseness has been developed: The Glottal-to-Noise Excitation Factor (GNE-Factor). It shows to which extend a voice is excited by turbulent noise on a vocaltract constriction or by vocal-fold vibration. The new parameter is introduced briefly. Then the independence of this parameter from other well-known roughness parameters is demonstrated by multidimensional data analysis. 1. INTRODUCTION Acoustic voice parameters are calculated from digitized speech waves. They give information about different voice characteristics. For clinical use the acoustic parameters should correspond to perceptive voice characteristics like hoarseness and roughness. Several authors [1] [2]) found out that their methods to calculate the degree of hoarseness were very sensitive to roughness present in the voice. This roughness is represented by the Jitter, a parameter for the amount of perturbations in the period length. The new GNE-parameter is compared to thr...