Expertise provides resilience to sound source variability in music perception

Area of Science:

• Cognitive Psychology
• Auditory Perception
• Expertise Studies

Background:

• Listeners show enhanced perception for acoustically consistent sounds compared to variable ones.
• This consistency benefit is observed in speech adaptation tasks (single vs. multiple talkers) and music adaptation tasks (single vs. multiple instruments).

Purpose of the Study:

• To investigate the relationship between perceptual expertise and performance in speech and music adaptation tasks.
• To determine if musical expertise influences the consistency benefit in auditory perception.

Main Methods:

• Experiment 1: Assessed listeners with diverse musical backgrounds to select a suitable musical interval for tone categorization.
• Experiment 2: Tested nonmusicians, intermediate musicians, and experienced musicians on both speech and music adaptation tasks.
• Compared categorization speed and accuracy for consistent vs. changing sound sources (talkers/instruments).

Main Results:

• All listener groups demonstrated faster and more accurate categorization with consistent sound sources across both speech and music.
• The consistency benefit was more pronounced and similar across speech and music tasks for experienced musicians compared to nonmusicians.
• Findings support domain-general accounts of perceptual adaptation and expertise.

Conclusions:

• Perceptual expertise, particularly in music, enhances the ability to benefit from acoustic consistency in auditory perception.
• The findings suggest that expertise facilitates more generalized perceptual learning across different auditory domains.
• Auditory adaptation mechanisms may be influenced by domain-general principles of expertise and learning.