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A Comparison of Environment Classification Among Premium Hearing Instruments.
Anusha Yellamsetty1, Erol J Ozmeral1, Robert A Budinsky1
1Department of Communication Sciences and Disorders, 7831University of South Florida, Tampa, Florida, United States.
Trends in Hearing
|March 22, 2021
Summary
Hearing aid environmental classification varies significantly between devices and human listeners. Understanding these differences is crucial for effective hearing aid fitting and signal processing.
Area of Science:
- Audiology
- Acoustics
- Signal Processing
Background:
- Hearing aids use environmental classification to guide signal processing.
- This classification data aids clinicians in hearing aid fitting and troubleshooting.
Purpose of the Study:
- To compare environmental classification schemes across five premium hearing aids.
- To evaluate device performance in diverse acoustic scenes with varying signal-to-noise ratios and levels.
- To compare hearing aid classifications with those of normal-hearing listeners.
Main Methods:
- Twenty-eight acoustic scenes were presented to five hearing aid devices on an acoustic manikin.
- Classification data was collected and recategorized into generic labels: Speech in Quiet, Speech in Noise, Noise, and Music.
- Normal-hearing listeners also classified the acoustic scenes.
Main Results:
- Significant similarities and differences were observed among the five hearing aid devices and human listeners.
- Device classification performance varied, with some influenced by overall sound level and others by signal-to-noise ratio.
- Discrepancies between hearing aid and human classification were noted for speech and music environments.
Conclusions:
- Environmental classification is central to hearing aid signal processing strategies.
- The notable differences among devices highlight the importance of comprehensive assessment for clinicians and wearers.
- Understanding classification variations is essential for optimizing hearing aid performance and patient counseling.
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