Description: 信号与系统基础知识包括连续信号与模型、离散信号与模型；常用信号变换包括Z变换、Chirp Z变换、FFT变换、DCT变换和Hilbert变换等；离散系统结构包括IIR、FIR和Lattice结构；IIR滤波器设计包括模拟和数字低通、高通、带通与带阻滤波器设计，以及基于冲激响应不变法和双线性Z变换法的IlR滤波器设计等；FIR滤波器设计包括基于窗函数、频率抽样法和切比雪大逼近法的FIR滤波器设计；平稳信号分析包括经典功率谱估计、基于参数模型的功率谱估计和基于非参数模型的功率谱估计；非平稳信号分析包括STFT变换、Gabor展开、Wigner-Ville分布与Choi-Williams分布；非高斯信号分析包括基于非参数法的双谱估计、基于参数模型的双谱估计，以及双谱估计的应用；信号处理的GUI实现包括滤波器设计与分析的FDATool工具和滤波器设计与信号分析的SPTool工具。-signals and systems based on knowledge, including continuous signal with the model, discrete signal and model; Common signals include transform Z transform, chirp Z-transform, FFT transform. DCT and Hilbert transform; Discrete system architecture including IIR, FIR and Lattice structure; IIR filter design, including analog and digital low-pass, high-pass, band-pass and band stop filter design, Based on the impulse response of the same law and bilinear Z transform the IlR filter design; FIR filter design including on the basis of the window function, frequency sampling and snow all over the big approximation of FIR filter design; stationary signal analysis include classical power spectrum estimation, Based on the model parameters of the power spectrum estimation and non- parametric model b Platform: |
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Author:james |
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Description: FIR数字滤波器的设计方法主要是建立在对理想滤波器频率特性作某种近似的基础上的。这些近似方法有窗函数法、频率抽样法、最佳一致逼近法。在这里只讨论窗函数法。程序中也是采用了这种方法。-FIR digital filter design method is mainly based on the frequency characteristics of the ideal filter for some kind of approximation on the basis of. These approximate methods are a window function method, frequency sampling method, the best uniform approximation method. Here only to discuss the window function method. Procedure is also adopted this approach. Platform: |
Size: 217088 |
Author:李文 |
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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 |
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Description: 包含FIR IIR窗函数法，频率采样法，模拟滤波器等 -FIR IIR contains window function method, frequency sampling method, such as analog filters Platform: |
Size: 35840 |
Author:马纪 |
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Description: 先采集一单声道音频信号（.wav）并用WAVREAD文件采样读取，并对其进行频谱分析。分别用窗函数法和双线性变换法设计低通、高通、带通三种FIR滤波器和IIR滤波器。用M文件使信号通过滤波器并对输出信号进行时域和频域分析。-First acquisition of a mono audio signal (. Wav) files with sampling WAVREAD read, and their spectral analysis. Window function, respectively and the design of bilinear transform low-pass, high pass, band-pass FIR filters and IIR three filters. M document with the signal through the filter and the output signal in time domain and frequency domain analysis. Platform: |
Size: 197632 |
Author:宋立泉 |
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Description: 采用频率取样设计法设计FIR数字低通滤波器，实现时还有具体的指标要求-Design using the design of frequency sampling FIR digital low-pass filter, to achieve specific targets when there are requirements Platform: |
Size: 1024 |
Author:qiwenchao |
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Description: 数字滤波器的设计及性能比较
用三种方法设计FIR滤波器：窗口法、最大最小误差法、频率采样法；用两种方法设计IIR滤波器：冲激响应不变法、双线性变换法。很全的matlab滤波器程序！- Digital filter design and performance comparison of three methods to use FIR filter design: the window method, the largest minimum error method, frequency sampling method two ways IIR filter design: impulse response of the same law, two and transform. Is the whole process of the matlab filter! Platform: |
Size: 1024 |
Author:洪耀辉 |
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Description: FIR数字滤波器的设计:用窗函数法，频率采样法及优化设计法设计FIR滤波器的原理及方法,用MATLAB编程实现FIR数字滤波器的设计-FIR digital filter design: using window function method, frequency sampling method and optimal design of FIR filter design method principles and methods, using MATLAB programming design of FIR digital filters Platform: |
Size: 148480 |
Author:田华梅 |
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Description: MATLAB实现FIR数字滤波器的仿真 可以自己设定采样频率和滤波器种类-MATLAB realization of FIR digital filter can be set for the simulation sampling frequency and filter type Platform: |
Size: 4096 |
Author:枫树林 |
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Description: FIR数字滤波器设计。包括常用窗函数及其MATLAB实现、基于频率抽样法的FIR滤波器设计、基于切比雪夫逼近法的FIR滤波器设计。-FIR digital filter design. Including the common window function and its MATLAB, based on frequency sampling FIR filter design, based on Chebyshev approximation of FIR filter design. Platform: |
Size: 14336 |
Author:cd |
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Description: 基于遗传算法来实现频率采样FIR滤波器的设计，本程序采用的是谢菲尔德的遗传算法工具箱，有各种函数，在工程里面添加了自己的适应度函数。-Based on genetic algorithm to implement the frequency sampling FIR filters, this procedure USES a genetic algorithm toolbox of Sheffield has a variety of functions, in engineering to add his own fitness function. Platform: |
Size: 2048 |
Author:北极星 |
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Description: （1）录制一段语音信号，完成对信号的采样，画出信号的时域波形和频谱图，确定信号的频谱范围；
（2）给信号叠加噪声（噪声类型分为如下几种：a白噪声；b单频噪色（正弦干扰）；c多频噪声（多正弦干扰）；d其它干扰。），画出受噪声干扰的信号时域波形和频谱图；
（3）采用窗函数法设计FIR低通滤波器，画出滤波器的频响特性图；
（4）用所设计的滤波器对受噪声影响的信号进行滤波，画出滤波后语音信号的时域波形图和频谱图；
（5）对滤波前后的信号进行对比，分析信号的变化；回放语音信号，并与原始语音信号对比。((1) record a speech signal, complete the sampling of the signal, draw the time domain waveform and frequency spectrum of the signal, and determine the spectrum range of the signal;
(2) signal superposition noise (noise type is divided into the following: a white noise, B single frequency noise (sinusoidal interference); C multifrequency noise (multi sinusoidal interference); d other interference) Noise signal, time domain waveform and spectrogram are drawn;
(3) the FIR low-pass filter is designed by using the window function method, and the frequency response characteristic of the filter is drawn;
(4) the designed filter is used to filter the signal affected by the noise, and the time domain waveform and spectrogram of the filtered speech signal are drawn;
(5) compare the signals before and after filtering, analyze the change of the signal, replay the speech signal, and compare with the original speech signal) Platform: |
Size: 13312 |
Author:华
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Description: fir 滤波器的程序文件和测试文件，仿真数据和matlab仿真数据进行过比对，matlab采用fdatool生成的低通滤波器，采样率为24兆，通带2.5M，截止频率为5M(FIR filter program files and test files, simulation data and MATLAB simulation data have been compared, Matlab using FDATool generated low-pass filter, sampling rate of 24 megabytes, pass band 2.5M, cut-off frequency of 5M) Platform: |
Size: 4015104 |
Author:星皓
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Description: 简单的数字滤波器设计
1．用脉冲响应不变法设计巴特沃斯数字滤波器
2. 用双线性变换法设计切比雪夫数字滤波器
3. 用双线性变换法设计巴特沃斯数字滤波器，并将直接型结构转换成级联型结构
5.设计带阻滤波器
6．利用窗函数设计法设计FIR数字低通滤波器
7. 利用频率采样设计法设计FIR数字低通滤波器。
8. 创新训练拓展内容
（1）根据心电信号特点设计IIR或FIR滤波器滤除心电图信号噪声
（2）设计IIR滤波器或FIR滤波器对语音信号进行滤波。(Simple digital filter design
1. design of Butterworth digital filter by impulse response invariance
2. design of Chebyshev digital filter by bilinear transform
3. the Butterworth digital filter is designed by the bilinear transformation method, and the direct structure is converted into a cascade structure
5. design bandstop filter
6. design of FIR digital low pass filter by window function design
7. the FIR digital low pass filter is designed by using the frequency sampling design method.
8. the content of creative training and expansion
(1) design IIR or FIR filter to filter the noise of electrocardiogram signal according to the characteristics of ECG signal
(2) the IIR filter or FIR filter is designed to filter the speech signal.) Platform: |
Size: 1478656 |
Author:jl12
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