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Use of a correlational method to estimate a listener's weighting function for speech
1Syracuse University, New York 13244, USA.
The Journal of the Acoustical Society of America
|December 1, 1996
Summary
This study shows that a correlational method can determine how listeners weight speech frequency bands. While most listeners prioritize mid-frequency bands, individual differences in speech perception strategies were observed.
Area of Science:
- Auditory Perception
- Speech Processing
- Psychoacoustics
Background:
- Understanding how listeners utilize different speech frequency bands is crucial for speech intelligibility research.
- Previous methods for assessing speech frequency weighting have limitations.
Purpose of the Study:
- To investigate the feasibility of using a correlational method to estimate listener weighting of speech frequency bands.
- To determine if listener weighting functions for speech can be derived.
Main Methods:
- Naturally spoken vowel-consonant-vowel syllables were filtered into low, mid, and high frequency bands.
- Each band was independently degraded at various signal-to-noise (S/N) ratios.
- A point biserial correlation was computed between listener responses and band degradation to infer weighting.
Main Results:
- The correlational method successfully provided listener weighting functions for speech perception.
- Most listeners showed a higher weighting for the mid-frequency band.
- Individual listeners exhibited varied weighting strategies.
Conclusions:
- The correlational method is a feasible approach for quantifying listener weighting of speech frequency bands.
- Listener weighting strategies for speech are not uniform, highlighting individual differences.
- Methodological considerations for refining this approach in future speech research were discussed.