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Soundscape evaluation: Binaural or monaural?
1Institute for Environmental Design and Engineering, The Bartlett, University College London, London WC1H 0NN, United Kingdom.
The Journal of the Acoustical Society of America
|June 3, 2019
Summary
Binaural and monaural recordings show agreement in soundscape evaluation. Binaural recordings offer more consistent perception for realism, reverberance, and directivity.
Area of Science:
- Acoustics
- Environmental Psychology
Background:
- Soundscape evaluation is crucial for urban planning and acoustic comfort.
- Comparing binaural and monaural recording techniques is essential for accurate soundscape assessment.
Purpose of the Study:
- To evaluate the performance of binaural and monaural recording methods in soundscape assessment.
- To determine the correlation between recording methods and various soundscape indicators.
Main Methods:
- Simultaneous binaural and monaural recordings were conducted at twelve diverse acoustic sites.
- Residents assessed nine soundscape indicators via laboratory-based auditory tests.
Main Results:
- Both recording methods demonstrated good agreement across most soundscape indicators, including overall impression, acoustic comfort, pleasantness, annoyance, eventfulness, and loudness.
- A-weighted sound pressure level had a minimal impact on soundscape evaluation for both methods.
- Reverberation time significantly influenced perceived reverberance, particularly with binaural recordings.
Conclusions:
- Both binaural and monaural recordings are feasible for most soundscape evaluations.
- Binaural recordings provide more consistent perception for specific indicators like realism, reverberance, and directivity.
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