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IIR滤波器设计
现有一个信号：x(n)=1+cos(π*n/4)+ cos(2*π*n/3)设计及各种数字滤波器以达下列目的：
低通滤波器，滤除cos(2*π*n/3) 的成分，即想保留的成分为1+cos(π*n/4)
高通滤波器，滤除1+cos(π*n/4) 的成分，即想保留的成分为cos(2*π*n/3)
带通滤波器，滤除1+cos(2*π*n/3) 的成分，即想保留的成分为cos(π*n/4)
带阻滤波器，滤除cos(π*n/4) 的成分，即想保留的成分为1+cos(2*π*n/3)
1. 用MATLAB命令butterord求除滤波器的阶数,用命令butter设计各滤波器；画出滤波器幅度和相频相应 取各滤波器的系统函数H(z)。
(an existing signal : x (n) = a cos (* n/4) cos (2** n/3) design and digital filter to achieve the following objectives : low-pass filter, filter cos (2** n/3) the ingredients that want to retain an element of a cos (* n/4) high-pass filter, a filter cos (* n/4) components, namely to retain the element of cos (2** n/3) band-pass filter , a filter cos (2** n/3) components, namely to retain the element of cos (* n/4) band stop filter, the filter cos (* n/4) components, namely to retain the ingredients for a cos ( 2** n/3) 1. MATLAB order butterord except for the band Filter, using the order of the filter design butter; paint Filter magnitude and phase frequency of the corresponding filter system function H (z).)
- 2005-08-28 19:51:08下载
- 积分：1
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MATLAB_1162834662
说明： Matlab 是套應用於科學與工程領 域中數 值計算、分析與模擬的應用軟體，結合了 數 值分析、矩陣運算及繪圖等功能，功能強大、操作介面簡易 。在大學線性代數 及微積分課程中均可應用 Matlab 來 輔助學習。(Matlab 是??)
- 2008-08-26 21:35:28下载
- 积分：1
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v23-45
THIS is very good documens for better optimization and giving better result option
- 2013-12-21 12:07:21下载
- 积分：1
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winds
winds of change cloud computing with abstract
- 2015-02-25 18:37:33下载
- 积分：1
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lagrangepoly
本代码能实现拉格朗日函数拟合，经验证具有很好的插值拟合效果。(This code can achieve the Lagrangian function fitting, interpolation proven with good fitting effect.)
- 2013-12-25 18:40:08下载
- 积分：1
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mma7260
arm9 adc采集mma 7260加速度传感器的信号数据绘制及信号样本空间txt文档(arm9 adc acquisition mma 7260 accelerometer signal data and signal the sample space to draw txt document)
- 2011-01-06 20:05:55下载
- 积分：1
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LSSVM
说明： 最小二乘支持向量机,是支持向量机算法的一种改进版本——即最小二乘支持向量机(Least Squares Support Vector Machine)(Least squares support vector machine)
- 2019-01-14 16:38:10下载
- 积分：1
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AUTOCONTRAST_D07VTA2
this file can autocontrast the image. It s very interesting
- 2011-10-14 20:57:15下载
- 积分：1
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electricdrives
simulation of electric drives
- 2014-02-26 01:52:33下载
- 积分：1
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ASM_version1b
ASM是由Cootes和泰勒推出的多分辨率方法的一个例子。
基本思想：
在ASM模型训练，训练从手工绘制的图像轮廓。发现的ASM模型在训练使用主成分分析（PCA），使该模型自动识别数据的主要变化是，如果可能的轮廓/好的对象的轮廓。还包含了ASM模型的协方差矩阵描述行垂直纹理口岸时，在正确的位置。
(Description This is an example of the basic Active Shape Model (ASM) as introduced by Cootes and Taylor, with multi-resolution approach.
Basic idea:
The ASM model is trained from manually drawn contours in training images. The ASM model finds the main variations in the training data using Principal Component Analysis (PCA), which enables the model to automatically recognize if a contour is a possible/good object contour. Also the ASM models contains covariance matrices describing the texture of the lines perpendicular to the control points when in the correct positions.
After creating the ASM model, an initial contour is deformed by finding the best texture match for the control points. This is an iterative process, in which the movement of the control points is limited by what the ASM model recognizes from the training data as a "normal" object contour.
Literature:
- Ginneken B. et al. "Active Shape Model Segmentation with Optimal Features", IEEE Transactions on Medical I)
- 2010-03-04 17:01:22下载
- 积分：1
