A cross-corpus study on speech emotion recognition

• URL: http://arxiv.org/abs/2207.02104v1
• Date: Tue, 5 Jul 2022 15:15:22 GMT
• Title: A cross-corpus study on speech emotion recognition
• Authors: Rosanna Milner, Md Asif Jalal, Raymond W. M. Ng, Thomas Hain
• Abstract summary: This study investigates whether information learnt from acted emotions is useful for detecting natural emotions. Four adult English datasets covering acted, elicited and natural emotions are considered. A state-of-the-art model is proposed to accurately investigate the degradation of performance.
• Score: 29.582678406878568
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: For speech emotion datasets, it has been difficult to acquire large quantities of reliable data and acted emotions may be over the top compared to less expressive emotions displayed in everyday life. Lately, larger datasets with natural emotions have been created. Instead of ignoring smaller, acted datasets, this study investigates whether information learnt from acted emotions is useful for detecting natural emotions. Cross-corpus research has mostly considered cross-lingual and even cross-age datasets, and difficulties arise from different methods of annotating emotions causing a drop in performance. To be consistent, four adult English datasets covering acted, elicited and natural emotions are considered. A state-of-the-art model is proposed to accurately investigate the degradation of performance. The system involves a bi-directional LSTM with an attention mechanism to classify emotions across datasets. Experiments study the effects of training models in a cross-corpus and multi-domain fashion and results show the transfer of information is not successful. Out-of-domain models, followed by adapting to the missing dataset, and domain adversarial training (DAT) are shown to be more suitable to generalising to emotions across datasets. This shows positive information transfer from acted datasets to those with more natural emotions and the benefits from training on different corpora.

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