Online Speech Dereverberation Algorithm Based on Adaptive Multichannel Linear Prediction

International Journal
2014-03-01 21:56
Authors : Jae-Mo Yang, Hong-Goo Kang

Year : 2014

Publisher / Conference : IEEE/ACM Transactions on Audio, Speech, and Language Processing

Volume : 22, issue 3

Page : 608-619

This paper proposes a real-time acoustic channel equalization method that uses an adaptive multichannel linear prediction technique. In general, multichannel equalization algorithms can eliminate reverberation if they meet the following specific conditions including: the co-primeness between channels and sufficient filter length. It also requires the characteristic of correct channel information, however, it is difficult to estimate accurate acoustic channels in a practical system. The proposed method utilizes a theoretically perfect channel equalization algorithm and considers problems that may arise in the actual system. Linear-predictive multi-input equalization (LIME) is also an appropriate attempt at blind dereverberation by assuring the theoretical basis. However, a huge computational cost is incurred by calculating the large dimensions of a covariance matrix and its inversion. The proposed equalizer is developed as a multichannel linear prediction (MLP) oriented structure with a new formula that is optimized to time-varying acoustical room environments. Moreover, experimental results show that the proposed method works well even if the channel characteristics of each microphone are similar. The results of experiments using various room impulse response (RIR) models, including both the synthesized and real room environments, show that the proposed method is superior to conventional methods.
전체 360
250 Domestic Conference 문현기, 박영철, 윤대희 "위상 일치와 가변 지수 감쇄 가중치 방법이 적용된 가상 저음 시스템" in 2016 년 한국방송·미디어공학회 하계학술대회, 2016
249 Domestic Conference 문현기, 박영철, 윤대희 "주파수 종속 믹싱 타임 추정 기법 분석" in 한국음향학회 춘계학술대회, 2016
248 Domestic Conference 서지호, 박영철, 윤대희 "헤드폰/이어폰 환경에서의 제약 최적화 기반의 효율적인 피드백 능동 소음 제어 필터 설계 알고리즘" in 한국음향학회 춘계학술대회, 2016
247 Domestic Conference 박규태, 박영철, 윤대희 "가변 가중치 곡선을 적용한 가상저음시스템" in 한국음향학회 춘계학술대회, 2016
246 Domestic Conference 양해민, 변경근, 강홍구 "RTCP를 이용한 심층 신경망 기반 음질평가 점수 대역 분별 알고리즘" in 한국음향학회 춘계학술대회, 2016
245 Domestic Conference 김글빛, 이진규, 강홍구 "문장종속 화자검증 시스템을 위한 비음수 행렬 분해 기반 잡음 제거" in 한국음향학회 춘계학술대회, 2016
244 Domestic Conference 김진섭, 주영선, 강홍구(연세대학교), 장인선, 안충현(한국전자통신연구원) "음향 모델 성능 개선을 위한 피치 동기화 기반의 DNN-TTS 시스템" in 한국음향학회 춘계학술대회, 2016
243 International Conference Hyeongi Moon, Gyutae Park, Yeong-cheol Park, Dae Hee Youn "A Phase-Matched Exponential Harmonic Weighting for Improved Sensation of Virtual Bass" in 140th Convention of Audio Engineering Society, pp.9544, 2016
242 International Conference Il-eun Kwak, Hong-Goo Kang "Robust formant features for speaker verification in the lombard effect" in APSIPA, pp.114-118, 2015
241 International Journal Ho Seon Shin, Tim Fingscheidt, Hong-Goo Kang "A Priori SNR Estimation Using Air- and Bone-Conduction Microphones" in IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol.23, issue 11, pp.2015-2025, 2015