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The problem of front-back localization in binaural hearing
Scandinavian Audiology. Supplementum
|January 1, 1982
Summary
Individuals can discern front-back sound locations using unique outer ear transfer functions. This study explores how subtle ear characteristics aid directional hearing.
Area of Science:
- Auditory Neuroscience
- Psychoacoustics
- Bioacoustics
Background:
- Front-back auditory discrimination is crucial for spatial hearing.
- The role of individual ear acoustics in this discrimination is not fully understood.
Purpose of the Study:
- To investigate how individuals discriminate front and back sound sources.
- To explore the contribution of individual outer ear transfer functions to front-back localization.
Main Methods:
- Objective measurements of individual ear transfer functions.
- Simulations of sound in the horizontal plane.
- Modifications of artificial-head signals to create directional inversions.
Main Results:
- Subjects demonstrated the ability to distinguish front from back sound presentations.
- Individual variations in outer ear transfer functions were found to be a key factor.
Conclusions:
- Subtle, individual characteristics of the outer ear are utilized for front-back sound discrimination.
- Personalized ear acoustics play a significant role in spatial auditory perception.