Speaker awareness for speech emotion recognition

Abstract

The idea of recognizing human emotion through speech (SER) has recently received considerable attention from the research community, mostly due to the current machine learning trend. Nevertheless, even the most successful methods are still rather lacking in terms of adaptation to specific speakers and scenarios, evidently reducing their performance when compared to humans. In this paper, we evaluate a largescale machine learning model for classification of emotional states. This model has been trained for speaker identification but is instead used here as a front-end for extracting robust features from emotional speech. We aim to verify that SER improves when some speaker's emotional prosody cues are considered. Experiments using various state-ofthe-art classifiers are carried out, using the Weka software, so as to evaluate the robustness of the extracted features. Considerable improvement is observed when comparing our results with other SER state-of-the-art techniques.