Description: 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). Platform: |
Size: 46036 |
Author:殷开 |
Hits:
Description: 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). Platform: |
Size: 46080 |
Author:殷开 |
Hits:
Description: 用双线性变换法设计IIR数字滤波器
滤波就是将外界干扰的不需要的频率滤除掉，一面影响要测试数据的结果。比如如果是心电波的话，如果这是外界有很大的噪声干扰，滤波就是把不必要的信号给抑制掉，以便对心跳的正常测试。通过图比较，滤波后的明显比之前的要平滑，就是滤去干扰噪声的结果。采样间隔对实验有影响，取的过大会导致频率混叠。-Bilinear transformation method using digital filter IIR filter design is to outside interference filter out unwanted frequencies, while the impact to test data results. For example, if it is so heart waves, if this is a great noise outside interference, filtering is unnecessary signal out to the curb in order to test the normal heartbeat. Through chart comparison, after filtering than before to smooth the noise interference is the result of least squares. Sampling interval of the experiment affect take-off frequency of the General Assembly leading to aliasing. Platform: |
Size: 1024 |
Author:果法 |
Hits:
Description: matlab 编写的FIR iir滤波器源程序，供初学者使用数字信号处理的下载。-matlab prepared FIR iir filter source code for beginners to use digital signal processing download. Platform: |
Size: 1024 |
Author: |
Hits:
Description: FIR 滤波器是在数字信号处理(DSP)中经常使用的两种基本的滤波器之一,另一个为IIR滤波器.
-FIR filters in digital signal processing (DSP) often used in one of two basic filters, and the other for the IIR filter. Platform: |
Size: 12288 |
Author: |
Hits:
Description: 数字信号处理实验详解及MATLAB实现源代码
实验一： 系统响应及系统稳定性
实验二： 时域采样与频域采样
实验三： 用ＦＦＴ对信号作频谱分析
实验四：ＩＩＲ数字滤波器设计及软件实现 实验五： FIR数字滤波器设计与软件实现
实验六： 数字信号处理在双音多频拨号系统中的应用-Detailed experimental digital signal processing and MATLAB source code to achieve the experimental one: the system response and system stability experiment II: time-domain and frequency domain sampling Sampling Three: The FFT of the signal for spectrum analysis experiment four: IIR digital filter design and software Experimental realize Friday: FIR digital filter design and software implementation experiments VI: Digital Signal Processing in DTMF dialing system Platform: |
Size: 333824 |
Author:wangjin |
Hits:
Description: 数字滤波器在数字信号处理领域中已经得到广泛应用,MATLAB 软件的频谱分析和滤波器的分析设
计功能很强,从而使数字信号处理变得十分简单。利用MATLAB 的数字滤波器设计工具箱可以快速有效地设计各种数字滤波器,设计简单方便。介绍了IIR 数字滤波器的设计原理、步骤以及在MATLAB 中的实现。-Digital filter in the field of digital signal processing has been widely used, MATLAB software for spectrum analysis and filter analysis and design features strong, so that digital signal processing have become very easy. MATLAB using the Digital Filter Design Toolbox can quickly and efficiently design of digital filters, design is simple and convenient. Introduction of the IIR digital filter design principles, steps and in the implementation of MATLAB. Platform: |
Size: 164864 |
Author:董裕磊 |
Hits:
Description: 关于数字信号处理的几篇PPT文档(IIR/FIR滤波器设计等)，适合数字信号处理入门学习-Digital signal processing on several PPT files (IIR/FIR filter design, etc.), suitable for digital signal processing Introduction to learning Platform: |
Size: 697344 |
Author:孙川川 |
Hits:
Description: 对数字信号进行IIR滤波，实现周期性窄带干扰的抑制-IIR filter for digital signal ，to realize the ellimination of priod spetral interference Platform: |
Size: 3072 |
Author:万元 |
Hits:
Description: 本文介绍了数字信号处理中各种算法基本原理，包括Z 变换、DFT 变换及其快速
算法FFT 等信号变换算法和包括IIR 与FIR 数字滤波器的设计与实现，详细论述了利用
MATLAB 软件对信号变换和设计数字滤波器的原理﹑ 步骤和实现方法，并给出了基于
MATLAB 的模拟与仿真。文章最后给出了实验结果，并就其结果做了进一步的解释和说明。
关键词：Z 变换，离散傅立叶变换DFT，数字滤波器，系统结构仿真
-This article describes a variety of digital signal processing algorithms in the basic principles, including the Z transform, DFT transform and its fast algorithm FFT and other signal transform algorithm and including IIR and FIR digital filter design and implementation, discussed in detail by using MATLAB software, the signal transformation The principle and design of digital filters ﹑ steps and implementations, and gives MATLAB-based simulation and emulation. Article Finally, the experimental results and the results made on the further explanation and clarification. Key words: Z transform, discrete Fourier transform DFT, digital filter, system architecture simulation Platform: |
Size: 256000 |
Author:zhd |
Hits:
Description: 用MATLAB设计及FPGA实现IIR滤波器的方法
摘要 本文介绍了IIR数字滤波器的传统设计思想与步骤及计算机辅助设计方法。并在FPGA上高效实现的低阶IIR滤波
器，其阶数低，实时响应快，适合雷达等的实时、高效处理环境。利用IIR滤波器的多相结构来实现该滤波器系统的方法，对于
四通道的情形在MATLAB上利用Simulink作了仿真, 并在目标板上对算法进行了实现,证明该系统能够同时处理四个通道的信号。-Using MATLAB Design and FPGA realization IIR Filter method Abstract This paper introduces IIR digital filter traditional design Thought and steps and CAD method. And FPGA on efficient realization low IIR filter, its order low, real response fast suitable radar real time, efficient processing environment. Use IIR filter multiphase structure realize the filter systematic method, for four channel circumstances in MATLAB on use Simulink made simulation and target board algorithm was realized proved system can simultaneously four channel signal. Platform: |
Size: 2021376 |
Author:sfef |
Hits:
Description: 1.题目：数字滤波器的设计与应用
2.设计要求：利用 Matlab 软件,以复合信号分离为例,对 “数字信号处理” 课程中
的谱分析 、数字滤波器设计和信号滤波这三个过程进行了仿真实现,给出了仿真结果。
3.具体步骤：
（1）构造原始信号s(t)
（2）画出s(t)的频谱
（3）设计ellipse数字滤波器(IIR)，包括低通，带通，带通，并显示幅频特性
（4）用得到的滤波器进行滤波，分离出三路信号，观察时域波形和幅频特性
（5）用三路信号s1,s2,s3尝试重新合成原始信号
4.问题：为什么重新合成的信号和原信号不相等呢？谁能解释一下？谢谢,QQ:664519036- 1. Title: Digital Filter Design and Application
2. Design requirements: use of Matlab software to composite signal separation, for example, on "Digital Signal Processing" course
Of the spectral analysis, digital filter design and signal filtering process carried out three Simulation, the simulation results.
3. Concrete steps:
(1) construct the original signal s (t)
(2) Draw s (t) of the spectrum
(3) design ellipse digital filter (IIR), including low pass, band pass, band pass, and shows amplitude-frequency characteristics
(4) filtering with a filter obtained by the isolation of three signals, observed time-domain waveform and frequency characteristics
(5) with a three-way signal s1, s2, s3 try to re-synthesis of the original signal
4. Question: Why is re-synthesized signal and the original signal is not equal to it? Who can explain? Thank you, QQ: 664519036 Platform: |
Size: 1024 |
Author:张智刚 |
Hits:
Description: 本IIR滤波器设计指标为：模拟信号采样频率2MHz，每周期最少采样20点-The IIR filter design specifications: the analog signal sampling frequency 2MHz, sampling 20 points per week for at least Platform: |
Size: 610304 |
Author:李纲 |
Hits:
Description: MATLAB在数字信号处理中的应用尤其是对于FIR一级IIR滤波器在MATLAB中的设计很有用途-MATLAB in Digital Signal Processing FIR one especially for IIR Filter Design in MATLAB in the very use Platform: |
Size: 14100480 |
Author:严律 |
Hits:
Description: 1. 用双线性变换法设计一个巴特沃斯低通IIR数字滤波器。设计指标参数为：在通带内频率低于0.2π时，最大衰减小于1dB；在阻带内[0.3π, π]频率区间上，最小衰减大于15dB.
2.0.02π为采样间隔，打印出数字滤波器在频率区间[0, π/2]上的频率响应特性曲线。
3. 用所设计的滤波器对实际心电图信号采样序列进行仿真滤波处理，观察总结滤波作用与效果
附：心电图采样序列x(n)
人体心电图信号在测量过程中往往受到工业高频干扰，所以必须经过低通滤波处理后，才能作为判断心脏功能的有用信息。下面给出一实际心电图信号采样序列样本x(n),其中存在高频干扰。在实验中以x(n)作为输入序列，滤除其中的干扰成分。
{x(n)}={-4,-2,0,-4,-6,-4,-2,-4,-6,-6,-4,-4,-6,-6,-2,6,12,8,0,-16,-38,-60,-84,-90,-66,-32,-4,-2,-4,8,12,12,10,6,6,6,4,0,0,0,0,0,-2,-4,0,0,0,-2,-2,0,0,-2,-2,-2,-2,0}
-1. With the bilinear transformation to design a Butterworth low-pass IIR digital filter. Design target parameters: the passband frequencies below 0.2π, the maximum attenuation is less than 1dB in the stopband [0.3π, π] frequency range, the minimum attenuation greater than 15dB.
2.0.02π for the sampling interval, print out the digital filter in the frequency interval [0, π/2] on the frequency response curve.
3. With the designed filter on the actual ECG signal sample sequence to simulate filtering, observation summed up the role and effect of filtering
Attachment: ECG sampling sequence x (n)
Human ECG signal in the measurement process is often subject to industrial high-frequency interference, it must be low-pass filtering before they can determine cardiac function as a useful information. Here are a sample of the actual ECG signal sampling sequence x (n), where there is high frequency noise. In the experiment with x (n) as the input sequence, in which the interference filter e Platform: |
Size: 3072 |
Author:zr |
Hits:
Description: 介绍了数字信号处理与Matlab信号处理基础、IIR滤波器设计、FIR滤波器设计、随机信号处理以及信号处理工具箱函数的详解等-The basis of digital signal processing and Matlab signal processing IIR filter design, FIR filter design, random signal processing and signal processing toolbox functions Xiangjie Platform: |
Size: 9796608 |
Author:luoyou |
Hits:
Description: 产生输入FSK信号的程序
FIR滤波器设计程序
IIR滤波器设计程序
FIR滤波器实现程序（用滤波器系数对输入信号进行滤波）
IIR滤波器实现程序（用滤波器系数对输入信号进行滤波）-FSK input signal generating program FIR filter design procedures IIR filter design procedures FIR filter (with the filter coefficient for filtering the input signal) IIR filter is implemented (with the filter coefficient for filtering the input signal) Platform: |
Size: 1024 |
Author:王瑞琰 |
Hits:
Description: This is an IIR filter implementation in CodeWarrior for the SC140 digital signal processor, it requires the MATLAB program in order to work. Platform: |
Size: 1024 |
Author:Elena Dobre |
Hits:
Search - Signal for IIR Filter