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We propose a microphone array network that realizes ubiquitous sound acquisition. Nodes with 16 microphones are connected to form a large sound acquisition system that carries out voice activity detection (VAD), sound source localization and sound source separation. The three operations are distributed among nodes using network. Because the VAD is implemented to manage power consumption, the system...
This paper presents a behavior description algorithm from time-series data on daily life activities extracted using home sensors. In a previous work, we proposed a method of time-series data clustering based on hidden Markov models (HMMs). This method separates the time-series data in segments of equally short length, and applies a behavior label for each segment. However, the change points of behaviors...
This paper proposes a software for sensor data composition in home environment. The software supports behavior detection for applications based on occupant's behaviors in home environment. The software generates program components for sensor data processing with a strong name resolver for program components in network middleware and knowledge description about sensors and behaviors. Behavior descriptions...
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