2008 Fiscal Year Final Research Report
Advanced binaural noise reduction for next generation hearing aids
| Project/Area Number |
19700156
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Perception information processing/Intelligent robotics
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| Research Institution | Japan Advanced Institute of Science and Technology |
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Principal Investigator |
LI Junfeng Japan Advanced Institute of Science and Technology, 情報科学研究科, 助教 (50431466)
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| Project Period (FY) |
2007 – 2008
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| Keywords | 両耳雑音抑圧法 / 二段階両耳音声強調 / 心理音響ECモデル / 補聴器 |
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| Research Abstract |
In this research, we proposed a two-stage binaural speech enhancement with Wiener filter (TS-BASE/WF) based on the equalization-cancellation (EC) model. In the proposed TS-BASE/WF, the interfering signal is first estimated by equalizing and cancelling the target signal based on the EC model, and a time-variant Wiener filter is then applied to enhance the target signal given the noisy mixture signals. Main advantages of the proposed TS-BASE/WF are: (1) effective in dealing with non-stationary multiple-source interfering signals; (2) successful in preserving the perceptual impression of acoustic scenes. Experimental results in various spatial configurations confirm that the TS-BASE/WF outperforms the traditional binaural speech enhancement algorithms in both speech enhancement and sound localization.
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