In this paper, we propose a new speech enhancement system using the wavelet thresholding algorithm. The basic wavelet thresholding algorithm has some defects including the assumption of white Gaussian noise (WGN), malfunction in unvoiced segments, bad auditory quality, etc. In the proposed system, we introduce a new algorithmwhich does not require any voiced/ unvoiced detection system.Also, in ...

Aiming at the problem of low efficiency and large memory consumption in mobile robot path planning, this paper proposes an improved version RRT*Fixed Nodes( RRT*FN )algorithm based on adaptive threshold, named A-RRT*FN. The algorithm constructs a sampling tree two directions starting point, target point adaptively sets threshold according to environment both sides improve environmental adaptabi...