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audio_demo
语音信号处理：This package encloses a small application dedicated to speech signal processing
at 8 kHz or 16 kHz. This application reads standard *.wav or *.pcm files through UI dialog box, plots and plays the signal with vertical dynamic crosshairs.(This package encloses a small application dedicated to speech signal processing at 8 kHz or 16 kHz. This application reads standard*.wav or*.pcm files through UI dialog box, plots and plays the signal with vertical dynamic crosshairs.)
- 2010-06-05 18:19:00下载
- 积分：1
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tongxi
OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术，实际上OFDM是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。本程序实现OFDM与QPSK技术的比较(This program realization technology and the OFDM QPSK technology)
- 2010-10-16 17:21:55下载
- 积分：1
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CPM
数字通信程序。记录我针对数字通信（John.G Proakis）版本学习中编写的仿真程序。
和大家交流共同学习，其中的错误，希望大家指证！
(Digital communication procedures. I look at digital communications records (John.G Proakis) version of the study prepared by simulation program. And to facilitate the exchange of learning, in which the error, hope that means the card!)
- 2009-05-09 04:06:43下载
- 积分：1
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wsn
RESEARCH PAPERS REGARDING WSN
- 2014-10-11 01:34:12下载
- 积分：1
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hole-plate-deformation
hole plate deformation
- 2013-11-16 12:42:29下载
- 积分：1
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probabilitydistribution
本文利用文献〔1〕、〔2〕、〔3〕中关于指数分布的特征刻划与稳定性定理,得到了均匀分布,瑞利(Rayleigh)分布和威布尔(Weibull)分布的一些特征性质与稳定性结果(In this paper, literature 〔1〕 〔2〕 〔3〕 on Exponential Distribution and characterization and stability theorem, the uniform distribution, Rayleigh (Rayleigh) and Weibull (Weibull) distribution in the nature of some features Stability Results)
- 2010-08-23 21:57:35下载
- 积分：1
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VR
说明： 用于进行变量降维的matlab程序，大家可以试一试，很有效哟(Variable Reduction Testbench MATLAB modules，it is very effective， we can try, very effective ..............)
- 2009-12-16 16:21:55下载
- 积分：1
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CHAOGAOSI
研究表明超高斯分布更加贴近语音信号的实际分布，然而语音信号很难用单一的概率密度
函数准确描述，针对这一情况，提出了一种用超高斯混合模型对语音信号幅度谱建模的新方法，并推导了
基于此模型的幅度谱最小均方误差估的估计式。仿真结果表明：与传统的短时谱估计算法相比，该算法不
仅能够进一步提高增强语音的信噪比，而且可以有效减小增强语音的失真度，提高增强语音的主观感知
质量。 (Recent research indicates that the speech spectral amplitude distributions could
be fairly described with super-Gaussian probability density function. However, the complexity
of speech signal determines that the distribution statistics ofspeech signal could not be well
described by single simple function. Thus a super-Gaussian mixture model for speech spectral
amplitude is proposed, and with this model, a minimum mean-square error (MMSE) estimator for speech
signals spectral amplitude is derived. The simulation results show that this algorithm based on
Gaussian and super-Gaussian speech model could achieve better noise suppression and lower speech
distortion as compared with the conventional short-time spectral amplitude estimation algorithm. )
- 2014-01-18 10:13:52下载
- 积分：1
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Exekunbang
Exe捆绑机源代码，需要的可以下载下来研究研究。(Exe bundling machine source code, need can be downloaded off studies.)
- 2010-08-04 11:27:20下载
- 积分：1
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channelSUI
这是一个无线网络中的信道仿真程序，可供通信系统建模的朋友参考(This is the wireless channel model program)
- 2010-05-13 10:02:13下载
- 积分：1
