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Cross-Modal Multivariate Pattern Analysis
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Linear multivariate evaluation models for spatial perception of soundscape.

Zhiyong Deng1, Jian Kang2, Daiwei Wang1

  • 1Music College, Capital Normal University, Beijing China.

The Journal of the Acoustical Society of America
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Summary

Auditory spatial perception in soundscapes is enhanced by clearer sound source directionality and reduced noise. Optimal ranges for sound intensity, dynamics, and acoustic metrics like Leq and IACC improve spatial awareness and listener preference.

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Area of Science:

  • Acoustics
  • Psychoacoustics
  • Environmental Sound Studies

Background:

  • Soundscape research emphasizes auditory perception and socio-cultural context.
  • Spatial perception is crucial for understanding soundscapes, yet prior research is limited.
  • Investigating the relationship between acoustic parameters and subjective spatial perception is needed.

Purpose of the Study:

  • To analyze the relationship between semantic parameters, acoustic metrics (IACC, Leq, D), and subjective spatial perception (SSP).
  • To determine the independent effects and interrelationships of these parameters on spatial awareness.
  • To develop models for predicting subjective spatial perception in soundscapes.

Main Methods:

  • Utilized 21 native binaural-recorded soundscape samples.
  • Conducted auditory experiments to measure subjective spatial perception (SSP).
  • Performed analysis correlating semantic parameters, IACC, Leq, and dynamic range (D) with SSP.

Main Results:

  • Increased perceived noisiness correlated with decreased spatial awareness.
  • Closer, more directional sound sources, greater dynamics, and more sound sources improved spatial awareness.
  • Optimal ranges exist for roughness, sound intensity, transient dynamics, Leq, and IACC for enhanced spatial perception.
  • Improved spatial awareness showed a slight positive correlation with listener preference.

Conclusions:

  • Noise negatively impacts spatial awareness in soundscapes.
  • Specific acoustic characteristics like directionality, dynamics, Leq, and IACC are key to good spatial perception.
  • Developed two linear multivariate models to evaluate SSP based on semantic and acoustic parameters (Leq-D-IACC).