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- W2283067672 abstract "Emotions play an important role in human life. They are essential for communication, for decision making, and for survival. They pose a challenging research area across diverse disciplines such as psychology, sociology, philosophy, medicine and engineering. One realm of inquiry relates to emotions expressed in speech. In this study our focus is on angry, happy, sad, and neutral emotions in speech. We investigate the speech acoustic correlates that are important for emotion perception in utterances and propose techniques to synthesize emotional speech which will be correctly recognized by human listeners. The motivation for our research comes from the desire to impart emotion processing capabilities to machines in order to make human-machine interactions more pleasant, effective and productive. Instead of generating the emotional speech from text, in our approach we start with a natural neutral utterance and modify its acoustic features to impart the targeted emotion. As shown by the analysis and recognition studies, spectral and prosodic (F0, duration, energy) parameters can be successfully used to describe and recognize emotions. In this study we utilize these acoustic parameters for emotion resynthesis and follow an experimental methodology to investigate how they should be modified in order to produce one of the angry, happy or sad emotions in human speech. Based on the experiment results a multi-level emotion to emotion transformation (ETET) system is proposed. This is a novel system which is capable of generating good quality emotional speech. It consists of three main components that modify speech acoustic parameters at different time scales. First spectral conversion is applied at phoneme level, then prosody parameters are statistically estimated and modified at part of speech (POS) tags level, and finally automatically selected modification factors are applied on voiced and unvoiced regions. The proposed ETET system is robust and it can be easily adapted to new emotions and speakers. The field of emotional speech synthesis is a challenging new research area. We believe that the ideas, results, and discussions presented in this study will be beneficial for improving the rapidly developing and growing research of emotions in speech." @default.
- W2283067672 created "2016-06-24" @default.
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- W2283067672 date "2008-01-01" @default.
- W2283067672 modified "2023-09-23" @default.
- W2283067672 title "Emotional speech resynthesis" @default.
- W2283067672 hasPublicationYear "2008" @default.
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