第22回 ロボット聴覚特集 - 奥乃研究室 - 京都大学

社 団 法 人 人 工 知 能 学 会Japanese Society forArtificial Intelligence人 工 知 能 学 会 研 究 資 料JSAI Technical ReportSig-Challenge-0522-2 (10/14)SIMO-ICA Sound Scene Decomposition for Audio Tele-Presence Using SIMO-ICA, , Tomoya TAKATANI, Hiroshi SARUWATARI, Kiyohiro SHIKANO Nara Institute of Science and Technology, Graduate School of Information Science{tomoya-t, sawatari, shikano}@is.naist.jphttp://www.aist-nara.ac.jp/ ∼ tomoya-t/index.htmlAbstractIn this paper, we address a blind decompositionproblem of binaural mixed signals observed atthe ears of humanoid robot, and we introduce anovel blind signal decomposition algorithm usingSingle-Input Multiple-Output-model-basedICA (SIMO-ICA). The SIMO-ICA consists ofmultiple ICAs and a fidelity controller, andeach ICA runs in parallel under the fidelitycontrol of the entire separation system. TheSIMO-ICA can separate the mixed signals, notinto monaural source signals but into SIMOmodel-basedsignals from independent sourcesas they are at the microphones in the robotear. Thus, the separated signals of SIMO-ICAcan maintain the spatial qualities of each soundsource, i.e., they represent the decomposedsound scenes. Obviously the attractive featureof SIMO-ICA is highly applicable to not onlyspeech recognition but also, e.g., humanoidrobot-basedauditory tele-existence technology.The experimental results reveal that the spatialquality of the separated sound in SIMO-ICAis remarkably superior to that of the conventionalmethod, particularly for the fidelity ofthe sound reproduction.1 (BSS) (ICA)[1] BSS [2,3,4]. , . [5], [6], tele-presence (tele-existence)[7, 8] ., Single-Input Multiple-Output(SIMO) SIMO ICA (SIMO-ICA) [9, 10, 11, 12] , SIMOSIMO SIMO SIMO-ICA ICA fidelitycontroller , ICA . SIMO-ICA , SIMO , SIMO-ICA , . 1 SIMO-ICA MINT [13] 2 SIMO-ICA [14] 3 SIMO-ICA [15]9