-
wavemarksvd
本函数将完成W—svd模型下数字水印的嵌入，即经典的W-SVD数字水印算法(This function will finish W- SVD model under the embedded watermark, namely classic W- SVD watermarking algorithm is proposed)
- 2011-05-30 19:06:01下载
- 积分：1
-
2
说明： Simulation distribution2
- 2013-11-09 19:21:45下载
- 积分：1
-
20110907
求解有约束非线性规划实例MATLAB源程序(Solving constrained nonlinear programming)
- 2011-09-06 10:36:55下载
- 积分：1
-
145
This is the good examples for support vector machine
- 2009-02-18 14:09:04下载
- 积分：1
-
speech_processing_toolbox
final year Project report of speech processing in matlab
- 2010-08-25 23:41:33下载
- 积分：1
-
LeastSignificantBit_Embed_Program
说明： DCT域的嵌入程序，可以获得较高的鲁棒性，且嵌入秘密信息后的不可感知性也很好。(DCT embedded procedures, get higher robustness, and secret information embedded in the perception is also not very good.)
- 2006-03-22 12:54:03下载
- 积分：1
-
the-day-of-year
the day of year是指这一年已经逝去的天数（包括当天） 。在平年中，它的取值范围为 1
到 365，在闰年中，它的取值范围 1到 366。编写一个 MATLAB 程序，输入年，月，日，
输入为对应的 the of year。 (the day of year is the year the number of days have been lost (including the day). In the average year, it ranges from 1 to 365, in a leap year, it ranges from 1 to 366. Write a MATLAB program, enter the year, month, day, enter the corresponding the of year.)
- 2011-06-14 17:58:10下载
- 积分：1
-
Reflectance-Spectrum-Computation-of-1D-PhC
Reflectance Spectrum Computation of 1D Photonic Crystals matlab code
- 2011-04-25 14:10:55下载
- 积分：1
-
DPSK-optical
一种新的光纤通信调制技术，主要优点在于其全新的调制模式和简便的误码率计算。以上是全部程序代码。(a new optical fiber communication modulation technology, the main advantage of its new modulation mode and simple error rate. These are all code.)
- 2006-12-07 14:43:37下载
- 积分：1
-
03607_28
DFT进行频谱分析时的三种现象
1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。
采样前加低通滤波器防混叠
2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。
改用其他窗函数（非矩形）改善泄漏。
3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)
- 2007-05-08 16:22:17下载
- 积分：1
