第22回 ロボット聴覚特集 - 奥乃研究室 - 京都大学

CoRecognitionDataTrainingDataFeatureVectorExtractionFeatureVectorExtractionFeatureVectorFeature VectorModelTrainingBaseModelBase ModelRecognitionModelSourceDirectionDecision1009794 %etar 91cter 88AdaptationDataFeatureVectorExtractionFeatureVectorMLLRModelAdaptationAdaptation Modelr8582(a)Baseline system and MLLR-based system79BM AM1 AM2 UIEMRecognitionDataTrainingDataFeatureVectorExtractionFeatureVectorExtraction(b)FeatureVectorHLDAFeatureVectorUsefulInformationExtractionTransformationmatrixUsefulInformationExtractionHLDA-based systemFigure 5: System diagramRecognitionModelSourceDirectionDecisionUsefulInformationExtractionModelModelTraining 128 ms 32 ms 80 ∼ 4000 [Hz] N =4 L =82.4 24 4.3 4.2 24 ()3 Figure 5 4.3.1 (Base Model; BM) 2 2 (238ms318ms) 4 3 2 1 Figure 6: Experimental results of DOA estimation4.3.2 (Adaptaion Model; AM) MLLR 3 (60 deg0 deg−60 deg) 1 5 ( 15 ) AM1 AM2AM1 AM2 4.3.3 (UIE Model; UIEM)HLDA UIEM useful dimensionUIEM 4.4 Figure 6 11 BM 86.5%AM1 92.0%AM2 95.9%UIEM 95.3% AM2 AM2 AM1 BM AM2 92