The successful implementation of emotional effects in synthetic speech depends on two main factors: the available knowledge on how the emotional features of speech can be distinguished and described using the formalism of conventional speech processing techniques, and the incorporation of emotion dependent changes into the different stages of the speech production algorithm. This paper presents the results of a detailed analysis of human emotional speech, carried out to obtain formal descriptions of the five basic emotions. This was then used to create an emotion rule base, the analysis results for each emotion being coded as a set of rules introducing emotion-dependent changes to the synthesiser control parameters. Perception experiment results confirmed that the emotional rule base can produce recognisable emotion effects.
Keywords: synthetic speech, emotional effects, affect, human speech analysis
Bibliographic reference. Abadjieva, Elissaveta / Murray, Iain R. / Arnott, John L. (1993): "Applying analysis of human emotional speech to enhance synthetic speech", In EUROSPEECH'93, 909-912.