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date: 17 February 2020

Abstract and Keywords

This chapter is from the forthcoming The Oxford Handbook of Affective Computing edited by Rafael Calvo, Sidney K. D'Mello, Jonathan Gratch, and Arvid Kappas. Speech is a key communication modality for humans to encode emotion. In this chapter, we address three main aspects of speech in affective computing: emotional speech production, acoustic feature extraction for emotion analysis, and the design of a speech-based emotion recognizer. Specifically we discuss the current understanding of the interplay of speech production vocal organs during expressive speech, extracting informative acoustic features from speech recording waveforms, and the engineering design of automatic emotion recognizers using speech acoustic-based features. The latter includes a discussion of emotion labeling for generating ground truth references, acoustic feature normalization for controlling signal variability, and choice of computational frameworks for emotion recognition. Finally, we present some open challenges and applications of a robust emotion recognizer.

Keywords: emotional speech production, acoustic feature extraction for emotion analysis, computational frameworks for emotion recognition, acoustic feature normalization

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