Despite recent advances in the area of home telemonitoring, the challenge of automatically detecting the sound signatures\r\nof activities of daily living of an elderly patient using nonintrusive and reliable methods remains. This paper investigates the\r\nclassification of eight typical sounds of daily life from arbitrarily positioned two-microphone sensors under realistic noisy\r\nconditions. In particular, the role of several source separation and sound activity detection methods is considered. Evaluations\r\non a new four-microphone database collected under four realistic noise conditions reveal that effective sound activity detection\r\ncan produce significant gains in classification accuracy and that further gains can be made using source separation methods based\r\non independent component analysis. Encouragingly, the results show that recognition accuracies in the range 70%ââ?¬â??100% can be\r\nconsistently obtained using different microphone-pair positions, under all but the most severe noise conditions.
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