An acoustic and lexical analysis of emotional valence in spontaneous speech: Autobiographical memory recall in older adults

Deniece S. Nazareth, Ellen Tournier, Sarah Leimkötter, Esther Janse, Dirk Heylen, Gerben J. Westerhof, Khiet P. Truong

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Abstract

Analyzing emotional valence in spontaneous speech remains complex and challenging. We present an acoustic and lexical analysis of emotional valence in spontaneous speech of older adults. Data was collected by recalling autobiographical memories through a word association task. Due to the complex and personal nature of memories, we propose a novel coding scheme for emotional valence. We explore acoustic properties of speech as well as the use of affective words to predict emotional valence expressed in autobiographical memories. Using mixed-effect regression modelling, we compared predictive models based on acoustic information only, lexical information only, or a combination of both. Results show that the combined model accounts for the highest proportion of explained variance, with the acoustic features accounting for a smaller share of the total variance than the lexical features. Several acoustic and lexical features predicted valence. As a first attempt at analyzing spontaneous emotional speech in older adults autobiographical memories, the study provides more insight in which acoustic features can be used to predict valence (automatically) in a more ecologically valid setting.

Original languageEnglish
Title of host publicationProceedings Interspeech 2019
PublisherInternational Speech Communication Association (ISCA)
Pages3287-3291
Number of pages5
DOIs
Publication statusPublished - 1 Jan 2019
Event20th Annual Conference of the International Speech Communication Association: Crossroads of Speech and Language, INTERSPEECH 2019 - Messecongress Graz, Graz, Austria
Duration: 15 Sep 201919 Sep 2019
Conference number: 20
https://www.interspeech2019.org/

Conference

Conference20th Annual Conference of the International Speech Communication Association: Crossroads of Speech and Language, INTERSPEECH 2019
Abbreviated titleINTERSPEECH 2019
CountryAustria
CityGraz
Period15/09/1919/09/19
Internet address

Keywords

  • Autobiographical memory recall
  • Life events
  • Older adults
  • Sentiment analysis
  • Speech analysis
  • Valence

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    Nazareth, D. S., Tournier, E., Leimkötter, S., Janse, E., Heylen, D., Westerhof, G. J., & Truong, K. P. (2019). An acoustic and lexical analysis of emotional valence in spontaneous speech: Autobiographical memory recall in older adults. In Proceedings Interspeech 2019 (pp. 3287-3291). International Speech Communication Association (ISCA). https://doi.org/10.21437/Interspeech.2019-1823