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结合江阴广播电台直播室室内声学装修设计与施工的实际,提出了直播室的声学室内装修方案,对声吸收与声扩散原理作了说明,设计出了符合这些直播室室内声学环境的声吸收与声扩散构造,并对工程施工中的质量与工艺控制作了要求,以确保直播室室内声学装修的整体质量. 相似文献
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地市级电台直播室声学设计与装修 总被引:1,自引:1,他引:0
介绍了安庆人民广播电台广电中心的直播室声学设计方案和特点,以及具体装修施工中要注意的问题,对如何控制直播室的噪声及直播室的音质设计进行了详细叙述,作为地市级中小型广播电台的直播室设计与施工的成功实例,供大家参考. 相似文献
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针对高阶环形正交幅度调制 (QAM)的相干光通信 系统,提出了一种模糊C均值算法和K 最近邻算法相结合的非线性均衡算法。对接收端经相位噪声补偿后的数据,先用FCM算法有 效剪裁训练数据,同时对测试数据进行分类判决,从而极大降低了后续KNN算法的计算复杂 度。即首先计算训练集的初始质心和各数据点的初始隶属度,经过迭代计算收敛后,得到最 终的质心和各数据点的隶属度。然后将质心隶属度大于某阈值的测试数据点作为训练数据, 计算各测试数据与各训练集质心的距离对其暂时分类,接下来进行KNN算法分类。同时对测 试集进行分类判决,即对距该质心距离低于阈值的测试数据根据欧式距离直接判决,大于阈 值的测试数据用以上KNN方法进行判决。该算法基于112 Gbit/s单载 波单偏振相干检测环形16QAM单载波系统传输距离为1040 km进行了非线 性均衡效果仿真验证。仿真结果表明,本文所 提出的FCM-KNN算法可取得和KNN算法几乎相同的非线性均衡效果,而其复杂度比后者可降 低近20倍,对高阶QAM相干光通信系统长距离传输具有重要意义。 相似文献
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本文主要阐述户外直播室的声学设计特点、隔音手段,并结合实际对户外直播室设计、改造,以及直播室内设备的选用等作了详细介绍。 相似文献
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通过漏泄波导传输CBTC车地信息可以提高信息传输的可靠性和安全性。本文基于漏泄波导理论,利用磁偶极子法研究了漏泄波导的传输特性,并将仿真结果与实测数据进行了对比分析。同时,论文给出了积雪覆盖条件下,波导传输性能的测试数据,由此针对积雪覆盖的不同情况对传输信号的影响进行分析。 相似文献
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结合江阴广播电台直播室建筑声学施工的实际情况,提出了直播室隔声与减振的建设要求,明确直播室墙体与地面、顶面,隔声减振的施工工艺与方法,对门窗隔声及空调减振消声也进行了处理,指出了施工的注意事项,提出了改进措施。 相似文献
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采用虚拟制造技术对0.8μm双阱LPLV CMOS工艺进行优化,确定了主要的工艺参数。在此基础上,对全工艺过程进行仿真,得到虚拟制造器件和软件测试数据,所得结果与实测数据吻合得很好。 相似文献
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The article describes a model representation of radar probing data in form of a mixture of background and target samples, which is the sum of two random variables with very different parameters. For model development we research the behavior of the central moments of the distribution mix without assuming the distribution law form. An example it is described the detection of the signal at the output of compression system of chirp ionosonde. 相似文献
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解决IP网QoS问题是目前通信领域的研究热点之一.虽然研究已经取得了一定的进展,但人们对于IP 网QoS本身的含义及相关的问题还有着不同的理解.本文将从IP网QoS的定义入手讨论相关的一些问题以及解决IP网QoS问题所做的各种努力. 相似文献
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《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》1968,56(6):1024-1032
Assuming that visual responses are due to the action of particles on the membrane of the visual cells, the stochastic variability of the response should be a function of the number of particles producing it. Quantitative predictions can be made with the aid of a model proposed in previous articles. It is found that responses produced in visual cells of Limulus by absorption of a single photon have the stochastic properties which would be expected if the response to one photon were brought about by 25 particles. It is concluded from this that the processes leading to visual responses produce multiplication of particles. The effects of temperature and of metabolic poisons suggest that these processes are of chemical nature. 相似文献
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罗晓羽 《信息技术与标准化》2008,(6):37-39
论述了推进电子行业标准制修订项目计划管理信息化的必要性.并提出了具体措施;详细介绍了电子行业标准制修订项目计划管理数据库的设计思路和实现方法.阐述了对后续工作的几点思考. 相似文献
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对影响镍镀层内应力的因素做了介绍和分析,提出了对收缩应力的一种解释,提供了排除这些因素影响的方法,指出重视镀液的管理是减少各种影响内应力因素的主要办法。 相似文献
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By means of exact conformal mapping method we have defined character of dependence of squares amounts of angular part of film
element on angled part dimension. We propose relations, approximating obtained dependence. Calculation results and experimental
researches of large-scale models are represented. 相似文献
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Moshrefzadeh R.S. Radcliffe M.D. Lee T.C. Mohapatra S.K. 《Lightwave Technology, Journal of》1992,10(4):420-425
The temperature dependence of refractive index of polymer films was determined for a number of slab waveguides by a grating coupling method. This dependence was examined as a function of parameters such as molecular weight and glass transition temperature of the polymer. Temperature-induced changes in N TE-N TM , N being the effective index, were studied systematically for different slab waveguide compositions. It is shown that with proper device design and choice of polymeric materials, thermal effects can be reduced 相似文献
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A. M. Emel’yanov 《Semiconductors》2010,44(9):1134-1139
A method for analyzing the luminescence spectra of semiconductors is suggested. The method is based on differentiation of
the spectra. The potentialities of the method are demonstrated for luminescence in the region of the fundamental absorption
edge of Si and SiGe alloy single crystals. The method is superior in accuracy to previously known luminescence methods of
determining the band gap of indirect-gap semiconductors and practically insensitive to different conditions of outputting
radiation from the sample. 相似文献