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공동 행렬대각화 조건 기반 온라인 음원 신호 분리 및 잔향제거
유호건,김도희,송민환,박형민,Yu, Ho-Gun,Kim, Do-Hui,Song, Min-Hwan,Park, Hyung-Min 한국음향학회 2021 韓國音響學會誌 Vol.40 No.5
Reverberation in speech signals tends to significantly degrade the performance of the Blind Source Separation (BSS) system. Especially in online systems, the performance degradation becomes severe. Methods based on joint diagonalizability constraints have been recently developed to tackle the problem. To improve the quality of separated speech, in this paper, we add the proposed de-reverberation method to the online BSS algorithm based on the constraints in reverberant environments. Through experiments on the WSJCAM0 corpus, the proposed method was compared with the existing online BSS algorithm. The performance evaluation by the Signal-to-Distortion Ratio and the Perceptual Evaluation of Speech Quality demonstrated that SDR improved from 1.23 dB to 3.76 dB and PESQ improved from 1.15 to 2.12 on average.