Analysis of Emotions in Vowels: a Recurrence Approach

摘要

Emotional content in speech has been so far characterized by features based on linear source-filter models. However, the presence of nonlinear and chaotic phenomena in speech generation have been widely proven in literature. In this work, a novel framework has been developed to explore recurrence properties of vowels and describe nonlinear dynamics of speech. Experiments using a database of short spoken sentences emitted in the six basic emotions (anger, boredom, fear, happiness, neutral, sadness) show preliminary results of the approach.