상세정보
학술대회
Performance Improvement of GSC Algorithms by Near Channel Subtraction-Based Blocking Matrix
- 발행일
- 201211
- 출처
- International Conference on Ubiquitous Robots and Ambient Intelligence (URAI) 2012, pp.633-635
- 협약과제
- 12VC2300, 다축 모션 플랫폼을 기반으로 한 범용 오감 융합형 스포츠 시뮬레이터 개발, 지수영
- 초록
- For generalized sidelobe canceller (GSC)-based multi-channel speech enhancement, reference noise generation is essential to reduce remaining noises after fixed beamforming. However, the target signal leakage in the blocking matrix of GSC is inevitable. Thus, in this paper, near-channel subtraction scheme is proposed to improve the blocking matrix of the GSC tightly related with the reference noise. The performance of the proposed algorithm is compared with that of the conventional reference channel subtraction algorithm in the aspect of speech recognition rates and output SNR gains. Copyright © 2012 IEEE.
- KSP 제안 키워드
- Fixed beamforming, Generalized Sidelobe Canceller, Output SNR, Recognition rate, Subtraction algorithm, blocking matrix, multi-channel speech enhancement, performance improvement, reference channel, signal leakage, speech recognition