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To locate the position of the speaker, there are many methods, among of them, the method using steered response power is very popular. By phase transform, the steered response method (SRP-PHAT) is robust; with the noise increasing, the performance of the method becomes bad. Using principal eigenvector, the steered response power (SRP-PE) method is better than SRP-PHAT. In this paper, we propose an...
Distributed compressed sensing (DCS) is able to exploit both intra-and inter-signal correlation structures of multi-signal ensemble. This paper proposes a DCS scheme for image signal compression and reconstruction. The key idea is to exploit the inter-correlation of the blocks that split from the image. Significantly, joint sparse model was employed to compress the intra- and inter-redundancy of the...
This paper tests the existence of asymmetrical volatility clustering in Chinese emerging stock market and it is found that when innovation is negative, the fluctuation equation is significantly different from the model when innovation is positive. This paper discusses the volatility's asymmetrical reaction to autocorrelation of stock return and estimates the threshold value of ACF (autocorrelation...
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