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包含巴特沃斯低通滤波器去噪,图像平滑 阶数M=3 截断频率D0=40,指数低通滤波器 阶数N=3 截断频率d0=40,理想低通滤波器 梯形低通滤波器 截断半径35-50-Butterworth low-pass filter with de-noising, image smoothing order of M = 3 truncation frequency D0 = 40, index of low-pass filter order of N = 3 truncation frequenc
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本程序为一个用matlab实现的语音滤波程序,能计算并显示语音信号的幅频特性,巴特沃斯低通滤波器幅度和相位响应,引入噪声后的幅频特性,以及滤波后的DFT幅频特性。本程序附有语音文件以供试验。-This program is an implementation using matlab voice filtering procedures, can calculate and display the speech signal amplitude-frequency characteristics
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1.分析并了解巴特沃斯滤波器的频率特性
2.设计一个巴特沃斯滤波器使它符合对应的要求
3.学习绘制巴特沃斯滤波器的零极点分布图
4.通过设计对MATLAB的应用有了相应的了解
5.进一步了解截止频率和过渡带频率的范围等概念
-1、Analysis and understanding of the frequency characteristics of Butterworth filter
2、Design a Butterworth filter to ma
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介绍了巴特沃思(Butterworth)滤波器的应用、本质、特点、类型和设计实现步骤,通过对MATLAB信号处理工具箱中滤波器实现函数代码分析,提出了较标准双线性变换法步骤更简便的数字巴特沃思滤波器设计方法,并通过编程仿真实现数据滤波-The app lications, essence, characteristics, types, the design and imp lementation step s of the Butterworth filter were introduced.
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傅立叶变换,转换数据矩阵,二阶巴特沃斯(Butterworth)低通滤波器图像变换代码
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基础的音频处理matlab程序,设计巴特沃斯低通数字滤波器实现滤波。-Matlab-based audio processing procedures, Butterworth low-pass digital filter designed to achieve the filtering.
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本实验首先按照给定技术指标采用模拟低通滤波器(巴特沃思低通滤波器)去逼近理想模拟低通滤波器,然后通过双线性变换法对模拟滤波器进行数字化,得到数字滤波器。-In this study, first of all technical specifications in accordance with a given analog low-pass filter (Butterworth low-pass filter) to approximate the ideal analog low-pass
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巴特沃斯數字低通濾波器。採樣率8000HZ,fp=2100hz,fs=2500hz,Rp=3db,Rs=25db.-butterworth LPF
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这个是对一个一维信号的Excel数据加载进matlab程序,然后进行巴特沃斯的低通滤波。-This is a one-dimensional signal of Excel data is loaded into the matlab program, and then Butterworth low-pass filtering.
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设计巴特沃斯低通和高通IIR数字滤波器,得到二阶频率级联参数-Design of Butterworth low-pass and high-pass IIR digital filters, to be cascaded second-order frequency parameter
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butter worth, for digital singal processing
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Butterworth filter and Chebyshev filter of the MATLAB simulation
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butterworth filter design on MATLAB
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时间序列的时频特性分析研究时间序列的傅里叶变换及逆变换,快速梅林变换及逆变换,短时离散傅里叶变换,得到瞬时频率。
研究时间序列的Born–Jondan时频分布图,Butterworth时频分布图,Choi–Williams时频分布图,得到瞬时频率。
-Time series analysis of time-frequency characteristics of time series of Fourier transform and inverse transform, the fa
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做傅立葉轉換並SHIFT
2階巴特沃斯
做週期性雜訊的處理-Fourier transform and SHIFT 2 do Butterworth deal to do periodic noise
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理想低通、高通、巴特沃斯低通高通滤波器对图像进行锐化和模糊处理-Ideal low-pass, high pass, Butterworth low pass high pass filter sharpening and blurring the image processing
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程序代码说明
P0301:数字图像矩阵数据的显示及其傅立叶变换
P0302:二维离散余弦变换的图像压缩
P0303:采用灰度变换的方法增强图像的对比度
P0304:直方图均匀化
P0305:模拟图像受高斯白噪声和椒盐噪声的影响
P0306:采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波
P0307:采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波
P0308:图像的自适应魏纳滤波
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绘制四种常用低通模拟滤波器(贝赛尔滤波器,巴特沃斯滤波器,切比雪夫滤波器及椭圆滤波器)幅频特性曲线-Draw four commonly used low-pass analog filter (Bessel filter, Butterworth filter, Chebyshev filter and elliptic filter) amplitude-frequency characteristic curve
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模拟巴特沃斯滤波器,并可观察期幅频相频特性曲线-Analog Butterworth filter, and can observe the phase frequency of amplitude-frequency characteristic curve
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数字信号处理的问题,用MATLAB编写的,用巴特沃斯、切比雪夫等设计IIR数字滤波器的程序。-Digital signal processing issues, written with MATLAB, with Butterworth, Chebyshev design of IIR digital filters and other procedures.
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