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To extract acoustical signal of the main speaker in noisy environment, a signal transmission model was established based on cross microphone array in this paper. According to the signal transmission model, the main speaker's direction was estimated by utilizing improved MUSIC, and then using a spatial filtering method to track and pick up the main speaker's voice through the microphone array. Experimental...
A novel method is proposed to reconstruct the environmental geometric model in this paper. It is achieved by exploiting threshold method firstly, which is based on moving average filter. And then the space searching method is used to search the whole space, thus rebuilding the environmental geometric model. Experimental results demonstrate that this new method is feasible and simple to reconstruct...
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