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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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Internet-based-examination-system
研究基于互联网的在线考试系统的设计与实现，解决在线考试系统中存在的试题仓库，智能组卷，自动保存等问题。(Of Internet-based online examination system design and implementation of online examination system to resolve questions that exist in the warehouse, intelligent test paper, auto-save and other issues.)
- 2011-09-20 23:34:33下载
- 积分：1
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tongxinxuebaoNO6
分享是美德，通信学报第六期，很有用的资料。特别是通信行业的，谢谢分享。(Sharing is a virtue, Journal Communications sixth, useful information. Especially the communications industry, thanks to share.)
- 2011-11-01 16:26:18下载
- 积分：1
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AUV-motion-control-system-design
自主水下机器人运动控制系统设计，word文件，有图有公式，比较不错！(Autonomous underwater robot motion control system design, word documents, there are pictures and formulas, quite good!)
- 2021-03-17 15:19:20下载
- 积分：1
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gongfenqi
hfss设计的功分器，结构简单，易于实现，我相信对初学者会游有用( a new creative guide book on how to creat a new kind of antenna,i am sure it is helpful)
- 2016-05-14 18:15:27下载
- 积分：1
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DAQ
DAQ数据采集基础，介绍数据采集的基本组成，和各元素注意事项。(DAQ data acquisition based on the basic composition introduced data collection, and the elements of note.)
- 2011-05-27 13:49:29下载
- 积分：1
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ACS800
ABB变频器的资料，是ＡＣＳ８００的，非常实用，在工控调速领域都能用上．(ABB Inverter information ACS800 very practical in the field of industrial control speed can use.)
- 2008-07-23 09:41:00下载
- 积分：1
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green_laser_design
本文简单地探讨了一下绿光激光器设计中的部分问题，并用MATLAB进行了关键数据的计算，用zemax软件对激光产生后的光束变换进行了仿真。(This paper briefly discusses about the design of green laser part of the problem, and use MATLAB for the calculation of critical data, generated with zemax software after the laser beam transformation is simulated.)
- 2012-01-28 10:58:07下载
- 积分：1
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71402020-M701_Camera-YHM701F_03.1(GC0329)
Camera GC0329 0.3M FPC EFL=1.82mm
- 2013-08-01 19:08:56下载
- 积分：1
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Room-management-system
数据库客房管理系统框架结构以及源代码，帮助人们实现客房管理。(Database management system room frame structure as well as the source code, to help people realize the guest room management.)
- 2012-11-20 17:23:06下载
- 积分：1
