잡음에 강건한 핸드프리 통신용 음향 반향제거 시스템

• 영문명: A Noise Robust Acoustic Echo Cancellation System for Hands-Free Telephony
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 이영호(Young-Ho Lee) 조철수(Cheol-Soo Cho)
• 간행물 정보: 『한국산업기술융합학회 학술대회 논문집』2012년 후반기 학술대회 논문집, 53~56쪽, 전체 4쪽
• 주제분류: 공학 > 산업공학
• 파일형태: PDF
• 발행일자: 2012.10.31

영문 초록

In this paper, a noise robust acoustic echo cancellation system is proposed. Original AP(Affine Projection) algorithm has fast convergence speed in colored input signal but has noise amplification problem. So the proposed acoustic echo cancellation system uses Modified AP(Affine Projection) algorithm which normalizes the update equation by adding the multiplication of error power and projection order to autocovariance matrix of input signal. Through various computer simulations, we proved that the proposed algorithm performed well in noisy environment. Simulation results show the improved AIC(acoustic interference cancellation) performance than nlms and original AP algorithm.

키워드

Acoustic Echo Cancelation 음향 반향 제거 NLMS 정규화LMS AP Affine Projection AIC 반향 간섭 제거