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| 1 | Sound Field Reproduction of Focused Virtual Sources with Symmetry Sigmoid Regularization Function显示文摘Reproduction of focused sound sources is a fundamental problem in acoustic signal processing. Based on the cylindrical harmonic expansion of higher order Ambisonics(HOA), a novel method for focused sound source reproduction is proposed. To restrict the near-field distortion caused by higher order harmonic components of focused sound sources, a Symmetry sigmoid regularization function(SSRF) is designed, which exhibits a more suitable attenuation characteristic. By using SSRF, we first give the generalized cylindrical harmonic expansion of focused sound sources. The concept of continuous loudspeaker is utilized over a circular array to generate the discrete loudspeaker driving function. Based on the wideband error analysis, the match relationship between the SSRF and the variance pair(i.e., the operating frequency and the expansion order) is established. Objective evaluation results show that the near-field distortion is eliminated significantly by the proposed method. The reproduction errors of interior/exterior sound field are evidently lower than the state-of-the-art techniques. The subjective evaluations also confirm that the proposed approach is able to achieve higher reproduction quality compared to the referenced methods. | JIA Maoshen WANG Wenbei SUN Jundai BAO Changchun | 2018 | Chinese Journal of Electronics2018，27，4： | 1 |
| 2 | Transparent cap improves patients’ tolerance of colonoscopy and shortens examination time by inexperienced endoscopists显示文摘 | JunDAI NanFENG HongLU Xiao BoLI Chuan HuaYANG Zhi ZhengGE | 2010 | Journal of Digestive Diseases2010，，6： | 1 |
| 3 | Positive effects of treatment of donor cells with aphidicolin on the preimplantation development of somatic cell nuclear transfer embryos in Chinese Bama mini‐pig (Sus Scrofa)显示文摘 | Ting‐YuZHANG Jian‐JunDAI Cai‐FengWU Xiao‐LongGU LiangLIU Zhi‐QiangWU Yi‐ NiXIE BinWU Hui‐LanCHEN YaoLI Xue‐JinCHEN De‐FuZHANG | 2012 | Animal Science Journal2012，，2： | 1 |
| 4 | Softswitch Based Solution to Make Network Intelligent显示文摘The factors, such as the network optimization or the network amelioration by fixed telecommunication network operators, the convergence of the Personal Handy-phone System (PHS) network and the Public Switched Telephone Network (PSTN), the integration of PSTN and the Third Generation Mobile Communication (3G) Network, the broadband and multimedia based communication networks, causes the requirement for fixed network's intelligentization. The Softswitch is a feasible approach to meet this kind of requirement. The solution to make the network comprehensively intelligent based on Softswitch is highly advantageous, which enriches communication services and promotes Fixed and Mobile Convergence (FMC). | Li MingdongHong JunDai Yuning(Central Academy of ZTE Corporation, Nanjing 210012, China) | 2007 | ZTE Communications2007，5，1： | 0 |
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