2023 Fiscal Year Final Research Report
"Two Ears Are Better Than One": Towards the Development of a Real-Time Crosstalk Cancellation System Based on Bone Conduction
| Project/Area Number |
22K17904
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 61010:Perceptual information processing-related
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| Research Institution | Chiba University |
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Principal Investigator |
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| Project Period (FY) |
2022-04-01 – 2024-03-31
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| Keywords | Hearing / Bone Conduction / Crosstalk / Cancellation / Bone Transducer |
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| Outline of Final Research Achievements |
Crosstalk in bone conduction (BC) hearing devices presents a challenge by transmitting sound to the unintended ear, affecting binaural hearing benefits such as sound localization. Our research tackles this by developing a method to cancel crosstalk at an accelerometer on the mastoid via an adaptive FxLMS algorithm to generate an anti-crosstalk signal, aiming for the cancellation effect to extend to the cochlea. Despite mastoid cancellation, testing with pure-tone hearing thresholds indicated successful crosstalk reduction, as participants experienced lower thresholds in noise, suggesting effective cancellation. We further advanced our solution by implementing it in real-time, demonstrating practical applicability. Additionally, we explored combining this with lateralization tasks to refine crosstalk cancellation directly at the cochlea, aiming for a more targeted and effective approach. This series of innovations marks a significant step forward in improving BC hearing devices.
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| Free Research Field |
Hearing Sciences, Acoustical Engineering
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| Academic Significance and Societal Importance of the Research Achievements |
Our research demonstrates the potential to reduce crosstalk in bone conduction (BC) devices, a crucial step towards improved binaural hearing. While not yet fully realized, it shows promise for enhancing binaural perception in future BC device applications.
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