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Electroacoustic assessment of wireless remote microphone systems
Haniyeh Salehi1,2, Vijay Parsa1,2, Paula Folkeard2
1Electrical and Computer Engineering.
Audiology Research
|May 8, 2018
Summary
This study evaluated wireless remote microphones (RMs) for hearing aids (HAs) using speech intelligibility metrics. Results show significant performance differences among RMs in noisy and reverberant conditions, highlighting one superior device.
Area of Science:
- Audiology
- Acoustics
- Signal Processing
Background:
- Wireless remote microphones (RMs) are crucial for hearing aid (HA) users in noisy environments.
- Objective performance assessment of RMs is needed for audiologists and developers.
- Standardized methods for comparing RM systems are lacking.
Purpose of the Study:
- To assess the performance of four different wireless remote microphone systems.
- To utilize instrumental speech intelligibility and quality metrics for objective evaluation.
- To compare RM performance in simulated noisy and reverberant acoustic environments.
Main Methods:
- Four RM systems were tested with a hearing aid programmed to N4 audiogram targets.
- Two Head and Torso Simulators (HATS) were used in simulated environments with varying noise and reverberation.
- Computational models were employed to predict speech intelligibility and quality from recorded HA output.
Main Results:
- Significant performance variations were observed among the four RM systems.
- One RM system demonstrated notably superior performance in challenging acoustic conditions.
- Noise and reverberation levels impacted the effectiveness of the tested RM systems.
Conclusions:
- Instrumental metrics provide a reliable method for characterizing RM performance.
- Objective evaluation can guide the selection of optimal RMs for hearing aid users.
- These findings have implications for clinical audiology practice and RM development.
Keywords:
Wireless remote microphoneassistive listening deviceselectroacoustic assessmentspeech intelligibilityspeech qualityMore Related Videos
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