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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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Voice quality in affect cueing: does loudness matter?

Irena Yanushevskaya1, Christer Gobl, Ailbhe Ní Chasaide

  • 1Phonetics and Speech Laboratory, Centre for Language and Communication Studies, School of Linguistic, Speech and Communication Sciences Trinity College Dublin, Ireland.

Frontiers in Psychology
|June 21, 2013
PubMed
Summary
This summary is machine-generated.

Voice quality, not loudness, is key for conveying emotions in speech. While loudness alone is ineffective, it can enhance emotional signaling when combined with specific voice qualities like tense or modal voice.

Keywords:
affectemotionintensityloudnessperceptionvoice quality

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Last Updated: May 10, 2026

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Area of Science:

  • Speech Communication
  • Psychology
  • Acoustics

Background:

  • Emotional speech research suggests loudness and prosodic features are crucial for high-activation affects.
  • Previous studies linked distinct voice qualities to specific affective states, with inherent loudness variations.
  • The role of loudness versus voice quality in affect perception requires further investigation.

Purpose of the Study:

  • To determine the extent to which loudness differences influence the affective coloring of synthesized voice stimuli.
  • To isolate the contribution of voice quality versus loudness in conveying affect.
  • To test hypotheses regarding the principal determinant of affect cueing in speech.

Main Methods:

  • Two experiments using synthesized speech stimuli manipulated for loudness and voice quality.
  • Experiment 1: Compared distinct voice qualities with intrinsic loudness variations against modal voice stimuli with modified loudness.
  • Experiment 2: Used stimuli with distinct voice qualities but equalized loudness to assess the impact of voice quality alone.

Main Results:

  • Stimuli with distinct voice quality features consistently received higher affect ratings than modal voice stimuli with varied loudness (Experiment 1).
  • Non-modal voice quality stimuli effectively cued affect even when loudness was equalized (Experiment 2).
  • Loudness variation alone was relatively ineffective in conveying affect, while voice quality variation was essential.

Conclusions:

  • Voice quality is the primary determinant of affect expression in speech, not loudness per se.
  • Loudness does not independently signal affect but can enhance emotional communication when paired with specific voice qualities (tense, modal).
  • Understanding the interplay between voice quality and loudness is crucial for accurate interpretation of emotional speech.