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Acoustic Features Distinguishing Emotions in Swedish Speech
M Ekberg1, G Stavrinos1, J Andin1
1Department of Behavioural Sciences and Learning, Linköping University, Linköping, Östergötland, Sweden.
Journal of Voice : Official Journal of the Voice Foundation
|April 12, 2023
Summary
Acoustic features in Swedish speech help identify emotions like surprise and fear. Frequency, amplitude, and temporal parameters are key, with implications for hearing loss and hearing aid use.
Area of Science:
- Speech acoustics
- Psychoacoustics
- Linguistics
Background:
- Limited research exists on acoustic features differentiating emotions in speech.
- Understanding how acoustic parameters combine for emotion identification is crucial.
Purpose of the Study:
- Investigate acoustic parameters for differentiating anger, fear, happiness, sadness, and surprise in Swedish sentences.
- Determine the contribution of acoustic parameters to emotion identification.
Main Methods:
- One-way ANOVAs to compare acoustic parameters across emotions.
- Simple and multiple logistic regression models to assess parameter contributions.
- Analysis of Swedish speech samples.
Main Results:
- Surprise was the most acoustically distinct emotion.
- Anger and happiness showed no significant acoustic differences.
- Fear was the best-predicted emotion; happiness was the most difficult.
- Frequency and spectral balance parameters best predicted fear.
- Amplitude and temporal parameters were crucial for surprise.
- Sadness identification involved frequency, amplitude, and spectral balance parameters.
Conclusions:
- Acoustic features significantly differentiate emotions in Swedish speech.
- Individuals with hearing loss may struggle to identify fear due to impaired frequency detection.
- Hearing aid use may enhance the detection of happiness and fear, which rely on amplitude and spectral balance.
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