第22回 ロボット聴覚特集 - 奥乃研究室 - 京都大学

??????3.5 NBF SSA NBF NBF NBF NBFTrainingNoiseProcessingUserNoiseTrainingUserx 1() t???x J() tx 1() tx J() tFilter gFilter g1g2 FilterFilter gJ++Figure 4: ABF x 1() t??????x???J() t+OutputMinimizeNoiseOutputOutputUserMinimizeUser3.6 SSA [6] SSA MFCC [1]4 : ABF SSA (ABF SSA)4.1 3.5 NBF SSA (ABF) SSA (ABF SSA) 1 Frost [7] Frost ABF 1 Frost ABF SSA Frost ABF 4 5 Frost ABF 4 4 ProcessingUserNoisex 1() tx J() tFilter gFilter g1g2 FilterFilter gJ+OutputFigure 5: SSA ABF Noise SSA Frost ABF 5 SSA 5 SSA 4.2 ABF ABF SSA SSA θ N SSA DFT -X(k, n) ABF G(k) X(k, n) X(k, n) G(k) Y (k, n) (13) Y (k, n) =G(k) T X(k, n) (13)G(k) = [G 1 (k), ,G J (k)] T (14)n ABF , () θ N 1 Y (k, n) G(k) 32