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논문 기본 정보

자료유형
학술저널
저자정보
Seong-Pil Moon (Chung-Ang University) Tae-Gyu Chang (Chung-Ang University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.12 No.4
발행연도
2017.7
수록면
1,627 - 1,633 (7page)

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초록· 키워드

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This paper proposes a voice enhancing ear-protection system which is based on feedback active noise control(FBANC). The proposed system selectively suppresses the background noise and preserves the talking voice by controlling the adaptive algorithm with the voice activity period detection module. The noise reduction performance of the proposed noise canceling algorithm is analytically derived for the two key performance affecting parameters, i.e., electro-acoustic coupling distance and noise bandwidth. The proposed system is also implemented with a floating-point DSP system and its performance is experimentally tested to compare with the analytically derived results. The achieved levels of noise reduction for the three different noise bandwidths cases, i.e., 10㎐, 50㎐, and 90㎐, are high to show 17.05㏈, 10.54㏈ and 8.99㏈, respectively. The feasibility of the proposed system is also shown by the peak noise reduction achieved more than 25㏈ while preserving the voice component in the frequency range between 200-800㎐.

목차

Abstract
1. Introduction
2. Feedback Active Noise Control Based Voice Enhancing Ear-protection System
3. Performance Analysis of the Ear-protection System
4. Measurements and Results
5. Conclusion
References

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