Description: MATLAB是一套用于科学计算的可视化高性能语言与软件环境。它集数值分析、矩阵运算、信号处理和图形显示于一体，构成了一个界面友好的用户环境。它的信号处理工具箱包含了各种经典的和现代的数字信号处理技术，是一个非常优秀的算法研究与辅助设计的工具。在设计数字滤波器时，通常采用MATLAB来进行辅助设计和仿真。
（2）FIR滤波器的MATLAB设计
下面以设计线性相位FIR滤波器为例介绍具体的设计方法。
线性相位FIR滤波器通常采用窗函数法设计。窗函数法设-MATLAB is a set of scientific computing for the high-performance visualization language and software environment. It combines numerical analysis, matrix computation, signal processing and integrated graphics, constituting a friendly user interface environment. The Signal Processing Toolbox includes a variety of classic and modern digital signal processing technology, is a very good algorithm research and aided design tool. The digital filter design, which are normally used MATLAB to-aided design and simulation. (2) FIR filter design MATLAB below to design linear phase FIR filter example on the specific design methods. Linear phase FIR filter normally used window function design. Window functions located Platform: |
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Author:李红 |
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Description: 分别用窗函数法和等波纹最佳一致逼近法分别对FIR数字滤波器进行设计和仿真，并通过具体实例进行实现-respectively window function method and the best Bellows were consistent approximation of FIR digital filter design and simulation , and through concrete examples for achieving Platform: |
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Author:海洋 |
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Description: MATLAB与窗函数法结合设计FIR数字滤波器的研究-MATLAB and window function combined FIR digital filter design study Platform: |
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Author:陈伟 |
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Description: 本文是用矩形窗法设计FIR带通滤波器，来滤除音乐信号的噪声-this is rectangular window design FIR bandpass filter to filter out the noise signal Music Platform: |
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Author:xiaochong |
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Description: matlab设计IIR基本示例，matlab设计IIR高级示例，matlab窗函数设计FIR滤波器基本示例-Design of IIR Example matlab basic, matlab design IIR senior sample, matlab window function design of the basic example of FIR filter Platform: |
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Description: 用MATLAB实现FIR滤波器，窗函数法，四种-Realization of FIR filters using MATLAB, the window function method, four Platform: |
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Author:stormy |
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Description: FIR数字滤波器设,利用窗函数设计FIR滤波器,线性相位滤波器的特点及其应用-FIR digital filter designed using window function design FIR filters, linear phase filter characteristics and its application Platform: |
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Author:zhl |
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Description: 用matlab来实现fir滤波器，包括矩形窗、汉宁窗、汉明窗、等波纹法！-Using matlab to achieve the fir filter, including the rectangular window, Hanning window, Hamming window, such as corrugated Act! Platform: |
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Author:王娟芳 |
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Description: 利用窗函数法实现FIR滤波器的设计，包括各种常见的窗口函数
-Window function method using FIR filter design, including a variety of common window function Platform: |
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Author:shawn |
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Description: 四种窗函数设计FIR数字滤波器matlab源码（hant,hamming,blackman,kaiser)-use window functions to design digital low-pass FIR filter... Platform: |
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Author:Jie Yao |
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Description: 窗函数法滤波器设计程序 对学习数字信号处理很有用-Filter window function method to study the design process of digital signal processing useful Platform: |
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Author:马纪 |
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Description: FIR滤波器设计中的凯撒窗函数设计，最后有对应系数产生-FIR filter design in the design of the Kaiser window function, and finally there are the corresponding coefficients have Platform: |
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Description: 用窗函数法设计一个长度N等于8的线性相位FIR滤波器。其理想的幅频特性为
分别用矩形窗、Hanning窗、Hamming窗、Blackman窗、Kaiser窗(ｂ=8.5)设计该滤波器。
-Window function method used to design a length N equal to 8 the linear phase FIR filter. Its ideal amplitude-frequency characteristics of rectangular windows, respectively, Hanning window, Hamming window, Blackman window, Kaiser window (b = 8.5) the design of the filter. Platform: |
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Author:zhangfei |
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Description: 用各种窗函数设计FIR数字滤波器。
分别用矩形窗和Hamming窗设计线性相位FIR低通滤波器。要求通带截止频率，单位脉冲响应h(n)的长度N=21，绘出h(n)及其幅频响应特性曲线。
-Window function with a variety of FIR digital filter design. Were rectangular window and Hamming window design of linear phase FIR low-pass filter. Requirements of passband cutoff frequency, unit impulse response h (n) of length N = 21, draw h (n) and its amplitude-frequency response curve. Platform: |
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Author:刘卫菠 |
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Description: 用窗函数法设计FIR数字滤波器，能熟悉矩形窗、海宁窗、汉明窗和布莱克曼窗。掌握用上述窗函数法设计FIR数字滤波器的原理和方法。熟悉线性相位FIR数字滤波器特性。了解各种窗函数对滤波特性的影响。
-FIR window design with a digital filter function can be familiar with the rectangular window, Haining window, Hamming window and Blackman window. Master window function with the FIR digital filter design theory and methods. Familiar with linear phase FIR digital filter characteristics. Learn a variety of window function on the filter characteristics. Platform: |
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Description: 1、验证窗函数 N 变化时，验证其频谱主瓣副瓣比、主瓣宽度的变化。
a)矩形窗函数的 N 变化时，验证其其频谱主瓣副瓣幅度比基本不会发生变化，
而主瓣宽度将会变窄。这说明，当用矩形窗函数设计滤波器时，增大 N 不能使
得阻带衰减减小，但能够减小过渡带。
b)再选取其他的窗如 hamming/hanning 窗，验证当 N 变化时，其频谱主瓣宽
度变化、主瓣副瓣比值变化情况。
2、用窗函数法设计线性相位 FIR 低通，通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI,
阻带衰减不小于 40dB,通带衰减不大于 3dB.
a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否
满足要求，二者有什么不同。
b)使用 hamming 窗，将窗长增大 1 倍，设计 FIR。验证同样的窗函数类型
(hamming)，不同窗长度时，设计出来的 FIR 的过渡带宽和阻带衰减都有什么变
化。
3、不使用 Matlab 系统函数得到上一项指标的低通，并与上一项结果比较。
4 用窗函数法设计线性相位 FIR 高通，通带截止频率 wp=0.8PI, 阻带截止频率
ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter.
For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is
The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter.
In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and
Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter
Transition bandwidth.) Platform: |
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Author:花祭嘉音
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