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vm
说明： Owing to the broad application value of audio
watermarking in remote transmission and mobile
extraction, it is very important to study watermarking
approaches against A/D and D/A conversion. Based
on wavelet decomposition and cepstrum technology,
an audio watermarking algorithm is proposed where
the low-frequency wavelet coefficients are chosen for
cepstrum transforming. Then, the obtained cepstrum
data shows stable for watermark hiding by the
methods of edging data cutting and statistical mean
modification. The synchronization is not required in
the algorithm. Experimental results show that the
proposed algorithm can resist on the attack of A/D
and D/A successfully with features of large capacity
and zero bit error. It will be helpful for the mobile
audio in secure broadcast and management in the
- 2010-02-05 01:56:27下载
- 积分：1
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Comparisons_of_waveles_contourles_and_curvelets_in
说明： 地震合成记录的wavelets, contourlets and curvelets比较分析。本文不仅论述了三种方法的原理，而且提出一种联合方法，并且应用于地震信号处理(Synthetic seismic record wavelets, contourlets and curvelets comparative analysis. This article discusses the three methods is not only the principle and proposed a joint approach, and applied to seismic signal processing)
- 2009-08-27 15:52:52下载
- 积分：1
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gearbox-testproblem
本文研究开发了大功率风电齿轮箱试验台,用于6兆瓦以下的风电齿轮箱台架试验。论述了风电机组和风电齿轮箱的基本结构及电功率封闭式的齿轮箱试验台在风电齿轮箱试验台中的应用。在此基础上,利用西门子变频器、电动机、可编程控制器和WINCC监控软件搭建了风电齿轮箱试验台的驱动和加载系统,可实现对风电齿轮箱的驱动和加载,完成风电齿轮箱的各种试验,模拟风电齿轮箱在风力发电时的工作状态。利用NI数据采集卡和Labview软件搭建了风电齿轮箱运行状态监控系统,可对试验中的风电齿轮箱进行状态监控、故障诊断和停机保护。(With the development of science and technology , Phoenix can be more and more attention as a new non-polluting and renewable energy . )
- 2012-07-25 11:33:24下载
- 积分：1
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POW-0056-Rev0-LR
Xiangjiaba - Shanghai ±800 kV UHVDC transmission project
- 2012-01-24 23:13:22下载
- 积分：1
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japan
一个对日项目的需求说明，初接触对日项目的用来作为基本了解吧(一个 Japan needs of the project shows that early exposure to the Japanese project used as a basic understanding of it)
- 2011-07-13 23:07:24下载
- 积分：1
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LANDSLIDE-HAZARD-AND-RISK-ASSESSMENT
大牛Fausto Guzzetti的博士论文，研究滑坡的都知道的著名学者，对相关研究者有很好的指导作用(LANDSLIDE HAZARD AND RISK ASSESSMENT)
- 2015-02-11 10:03:47下载
- 积分：1
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cognitive-channel-allocation
说明： 认知无线电中子信道分配算法研究 上海交通大学硕士论文，详细介绍了认知无线电方面的各种知识。值得看看。对你很有帮助。(Subchannel allocation in cognitive radio algorithms pp Shanghai Jiaotong University, detailing the various aspects of cognitive radio knowledge. Worth a look. Helpful to you.)
- 2011-04-14 11:38:24下载
- 积分：1
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KunFang_thesis
一篇TURBO 均衡的博士论文，非常有价值(A the TURBO balanced the doctoral thesis, very valuable)
- 2012-08-14 12:22:37下载
- 积分：1
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DC2064A---Demo-Manual
演示电路板DC2064A是基于高效率双向多节电池的电池组平衡器LTC3300-1和多节电池的电池组监视器LTC6803-2设计的。(Demo board DC2064A is based on high-efficiency two-way multi-cell battery pack balancer LTC3300-1 and multi-cell battery pack Monitor LTC6803-2 design.)
- 2013-09-12 09:55:18下载
- 积分：1
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200981151754936
水 表的说明，安装调试工，接线，程序的试用，(Description of meter, installation and commissioning work, wiring, trial procedures,)
- 2010-10-08 14:21:29下载
- 积分：1
