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Human emotions track changes in the acoustic environment.

Weiyi Ma1, William Forde Thompson2

  • 1Australian Research Council Centre of Excellence in Cognition and its Disorders, Macquarie University, Sydney, NSW 2109, Australia; School of Linguistics and Literature, University of Electronic Science and Technology of China, Chengdu 610000, China; weiyi.ma@mq.edu.au Bill.Thompson@mq.edu.au.

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Human emotions systematically respond to changes in environmental sounds, similar to speech and music. This suggests our emotional system is highly attuned to acoustic cues in nature and human-made sounds.

Keywords:
emotionenvironmental soundsmusicmusical protolanguagespeech

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Area of Science:

  • Psychology
  • Acoustics
  • Bioacoustics

Background:

  • Emotional responses are crucial for survival.
  • Acoustic attributes in speech and music influence human emotions.

Purpose of the Study:

  • To investigate if changes in acoustic attributes of environmental sounds trigger systematic emotional responses.
  • To determine if human emotions track acoustic changes in environmental sounds similarly to speech and music.

Main Methods:

  • Modified 24 environmental sounds by imposing three acoustic attribute changes.
  • Evaluated participants' emotional responses to the modified environmental sounds.

Main Results:

  • Human emotions systematically tracked changes in acoustic attributes of environmental sounds.
  • Emotional responses to environmental sounds were comparable to those elicited by speech and music.
  • Acoustic changes in environmental sounds influenced the emotional interpretation of accompanying facial expressions.

Conclusions:

  • Human emotional perception is highly sensitive to acoustic variations in the environment.
  • Findings support Darwin's hypothesis on the evolutionary origins of speech and music from emotional signaling.
  • Environmental sounds play a significant role in shaping human emotional experiences.