![]() ![]() "Previously, this kind of emotion manipulation has not been done on running speech, only on recorded segments," explains Jean-Julien Aucouturier. The researchers believe this novel audio platform opens up many new areas of experimentation. For example, the happy manipulation modifies the pitch of a speaker's voice using pitch shifting and inflection to make it sound more positive, modifies its dynamic range using compression to make it sound more confident, and modifies its spectral content using high pass filtering to make it sound more excited. The emotional manipulations were created by digital audio processing algorithms that simulate acoustic components of emotional vocalisations. "This is the first evidence of direct feedback effects on emotional experience in the auditory domain." "The relationship between the expression and experience of emotions has been a long-standing topic of disagreement in the field of psychology," says Petter Johansson, one of the authors from Lund University, Sweden. This indicates that people do not always control their own voice to meet a specific goal and that people listen to their own voice to learn how they are feeling. The study found that the participants were unaware that their voices were being manipulated, while their emotional state changed in accordance with the manipulated emotion portrayed. In an initial study using a novel digital audio platform, published in Proceedings of the National Academy of Sciences (PNAS), participants read a short story aloud while hearing their own altered voice, sounding happier, sadder or more fearful, through a headset. We wanted to investigate what kind of awareness people have of their own emotional expressions." "Previous research has suggested that people try to manage and control their emotions, for example hold back an expression or reappraise feelings. "Very little is known about the mechanisms behind the production of vocal emotion," says lead author Jean-Julien Aucouturier from the French National Centre for Scientific Research (CNRS), France. ![]()
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