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NHK has proposed a famous 3D audio system: 22.2 multi-channel system, but its loudspeakers are too many and are troublesome to put in home. Ando and Wang has proposed two simplification methods to reduce its channel number, but only 3D sound field at the central listening point can be recovered well by NHK 22.2 system and its simplified systems, the listening experience at a non central listening...
This paper proposes a general multichannel system reproduction method. Firstly, relative to original multichannel system, a general global model is build up by guaranteeing sound pressure and the direction of particle velocity at the receiving point constant, and making the square error of particle velocity magnitude at the receiving point as little as possible. Then the model is equivalent to a least...
According to the requirement of providing semantically and personalized resource searching service to users in e-Learning systems and the problem of presenting the semantic relationships of users' query and searching results in traditional query expansion approaches, this paper discusses the representation and the construction of a semantic user model which represents individual user's interests by...
Passage extraction is an important component of passage retrieval. Sentence coherence and relevance is two factors mainly considered in the passage extraction. This paper proposes subsequence-based query-sensitive maximum cut algorithm for passage extraction. It incorporates the sentence coherence cut measure and sentence relevance cut measure into normalized cut criterion. And it uses suffix tree...
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