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The problem of underdetermined blind audio source separation is usually addressed under the framework of sparse signal representation. In this paper, we develop a novel algorithm for this problem based on compressed sensing which is an emerging technique for efficient data reconstruction. The proposed algorithm consists of two stages. The unknown mixing matrix is firstly estimated from the audio mixtures...
A new demosaicking algorithm based on direction categorization for wireless IP camera is proposed. By calculating the differences of neighboring pixels and the difference of average value of horizontal and vertical green pixels, the centered pixel is classified as horizontals verticals smooth and non-direction. After the directionality of the centered pixel is determined, the gradients of adjacent...
The paper introduces a novel architecture of all digital phase locked loop(ADPLL). It proposes a novel frequency acquisition method by separating frequency detecting process from phase detecting process which shortens the acquisition-time greatly. Furthermore, 1-bit quantified theory is used in ADPLL to increase the controllability of the loop. A precise mathematical model of the ADPLL is built with...
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