Search - dft convolution

[matlab] ovrlpadd

Description: realize overlapped-add method ％[y]=overlpadd(x,h,Nfft) ％y:output sequence ％x:input sequence ％h:filter impulse response sequence ％Nfft:points of each DFT operation ％重叠相加法实现分段卷积-realize overlapped-add method% [y] = over lpadd (x, h, Nfft)% y : x% output sequence : % h input sequence : impulse response filter% Nfft sequence : DFT points of each operation% of the sum of overlapping sub-convolution Method
Platform: | Size: 1024 | Author: 吴江华 | Hits:

[Other] FFTfrequencychartisanalytical

Description: 1．通过实验加深对快速傅立叶变换（FFT）基本原理的理解。 2．了解FFT点数与频谱分辨率的关系，以及两种加长序列FFT与原序列FFT的关系。离散傅里叶变换（DFT）和卷积是信号处理中两个最基本也是最常用的运算，它们涉及到信号与系统的分析与综合这一广泛的信号处理领域。实际上卷积与DFT之间有着互通的联系：卷积可化为DFT来实现，其它的许多算法，如相关、滤波和谱估计等都可化为DFT来实现，DFT也可化为卷积来实现。-1. Deepen the experimental fast Fourier transform (FFT) the basic tenets of understanding. 2. Understand the FFT spectrum and points of the resolution, and two extended sequence with the original FFT FFT relations. Discrete Fourier Transform (DFT) and the convolution of two signal processing is the most commonly used basic arithmetic, they relate to the signal and system analysis and synthesis of the wide range of signal processing field. DFT actually convolution and interoperability between contact : DFT into convolution can be achieved in many other algorithms, If relevant, filtering and spectral estimation could be achieved as DFT, DFT into convolution can be achieved.
Platform: | Size: 3072 | Author: 深蓝 | Hits:

[matlab] 03607_28

Description: DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。-DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.
Platform: | Size: 148480 | Author: qinyang | Hits:

[Windows Develop] signal

Description: 定义了signal的类和它的方法，主要有FFT DFT和卷积运算，并能处理简单的复数。-The definition of the signal class and its methods, the main FFT DFT and convolution operation, and can handle a simple plural.
Platform: | Size: 331776 | Author: 芦达 | Hits:

[Mathimatics-Numerical algorithms] signal

Description: 这本书从零开始，详细从数学方面讲解和推导了FFT，DFT，卷积，相关等信号处理原理，有兴趣的朋友-This book from scratch, from mathematics to explain in detail and derived FFT, DFT, convolution, correlation and other signal processing theory, are interested in friends
Platform: | Size: 8683520 | Author: xurongjun | Hits:

[matlab] signal_procesing_using_matlab

Description: 数字信号处理基于matlab 文件内容 /conv(卷积部分) dupconv 重叠保留法 freqcirconv 频域圆周卷积 freqconv 频域卷积 timecirconv 时域圆周卷积 timeconv 时域卷积 /fft(频域分析部分) d2fft 基2FFT dft DFT最简化程序 dtft DTFT演示 /fir(fir滤波器设计) fir 得到fir滤波器hn getwindow 得到fir滤波器窗函数wn idealfilter 理想滤波器(低通,高通,带通)hdn idealhd 理想低通滤波器 /fir gui(fir滤波器GUI设计) gui_top 总图 gui_fir fir滤波器GUI gui_sigout 选择信号GUI /power caculate(功率谱分析) directpower 直接谱分析 indirectpower 间接谱分析(估计谱分析) noise 噪声谱分析 /sigout(常见信号产生) sigout 离散信号产生-Digital signal processing matlab based on the content of the document/conv (convolution part) dupconv law of reservations freqcirconv overlapping frequency domain circular convolution freqconv frequency domain convolution timecirconv time-domain circular convolution timeconv time-domain convolution/fft (frequency domain analysis part) d2fft base 2FFT dft DFT the most simplified procedure dtft DTFT demo/fir (fir filter design) fir be fir filter hn getwindow be fir filter window function wn idealfilter ideal filter (low pass, high pass, band-pass) hdn idealhd ideal low-pass Filter/fir gui (fir filter GUI design) gui_top general layout gui_fir fir filter selection GUI gui_sigout signal GUI/power caculate (power spectrum analysis) directpower direct spectral analysis indirectpower indirect spectral analysis (spectral analysis estimated) noise noise spectrum analysis/sigout (common signals) sigout discrete signals
Platform: | Size: 36864 | Author: 芦达 | Hits:

[Other] DSPAcode

Description: 实现卷积，DFT FFT 算法的源代码，希望对一些朋友会有帮助 -Realize convolution, DFT FFT algorithm source code, in the hope that some of my friends will be helpful
Platform: | Size: 66560 | Author: 勾大海 | Hits:

[Algorithm] signalpro

Description: 在学习数字信号处理算法程序中用VC编写的几个通用算法程序。卷积计算/DFT与FFT实现/-In the learning process of digital signal processing algorithms using VC General Algorithm for the preparation of several procedures. Convolution calculation/DFT and FFT realization /
Platform: | Size: 156672 | Author: 楼丽娅 | Hits:

[matlab] circonvt

Description: 计算循环卷积，DFT，IDFT,FFT... .. -Computing cyclic convolution, DFT, IDFT, FFT ... ..
Platform: | Size: 2048 | Author: 徐建国 | Hits:

[matlab] matlab

Description: 计DFT，IDFT,FFT,循环卷积，循环移位以及重叠保留法-Of DFT, IDFT, FFT, cyclic convolution, cyclic shift and overlap to retain the Law
Platform: | Size: 3072 | Author: 徐建国 | Hits:

[DSP program] Fundamentals-Of-Dogital-Signal-Processing

Description: 第 1 章数字信号处理概述第 2 章模数转换和数模转换第 3 章数字信号第 4 章差分方程与滤波第 5 章卷积与滤波第 6 章 z 变换第 7 章傅立叶变换与滤波器形状第 8 章数字信号频谱第 9 章有限脉冲响应滤波器第 10 章无限脉冲响应滤波器第 11 章 DFT和FFT处理-Chapter 1 Digital Signal Processing outlined in Chapter 2 analog-digital conversion digital-to-analog conversion Chapter 3 digital signal differential equations Chapter 4 and Chapter 5 convolution filter and filter Chapter 6 z transform Chapter 7 Fourier transform and filtering device the shape of Chapter 8 digital signal spectrum Chapter 9 finite impulse response filter Chapter 10 infinite impulse response filter Chapter 11 DFT and FFT processing
Platform: | Size: 2871296 | Author: 徐靖 | Hits:

[Mathimatics-Numerical algorithms] chap02

Description: ex2_1 利用Z变换求系统输出 ex2_2 求DFT ex2_3 求序列的圆周移位 ex2_4 求序列的圆周卷积 ex2_5 简单的DFT实例-for the use of Z transform ex2_1 system output DFT ex2_3 for ex2_2 sequence for translocation of the circumference of the circle sequence ex2_4 for easy ex2_5 the DFT convolution example
Platform: | Size: 2048 | Author: 张满超 | Hits:

[Algorithm] DFT

Description: 该程序包括了一个应用最为广的离散傅里叶变换，褶积，抽样最小相位。绝对能运行-The program includes an application of the most widely used discrete Fourier transform, convolution, sampling minimum phase. They can certainly run
Platform: | Size: 225280 | Author: 蔚无 | Hits:

[Graph Drawing] dftconv

Description: 数字信号处理：实现对32点矩形序列和x(n)=n+1序列分别进行DFT，两者线形卷积，原序列补点至63点后的DFT和对DFT乘积的IDFT。显示为数值和坐标轴中的图像。vista系统不能看图。在win-c下编译，c语言-Digital signal processing: to achieve 32 points, rectangular sequence and x (n) = n+1 sequences were carried out DFT, linear convolution between the original sequence of fill points to 63 points, after the DFT and the DFT product of IDFT. Shown as values and axis in the image. vista system can not plug-in. In the win-c compiled, c language
Platform: | Size: 4096 | Author: pirate | Hits:

[matlab] lisanxinhaofuliyebianhuan

Description: 离散傅立叶变换(DFT)及其反变换的实现,有限长序列的循环移位、循环卷积-Discrete Fourier Transform (DFT) and its inverse transform of the realization of the cyclic shift sequence of finite length, circular convolution
Platform: | Size: 59392 | Author: jk | Hits:

[matlab] conv

Description: 利用DFT和IDFT计算x(n)和y(n) 的10点、15点、20点圆周卷积，然后与线形卷积结果画图比较-Calculated using DFT and IDFT x (n), and y (n) 10 points, 15 points, 20 points cyclic convolution, and then drawing comparison with the linear convolution result
Platform: | Size: 1024 | Author: 田友凡 | Hits:

[Algorithm] dit_fft

Description: 本程序包括：DFT（离散傅里叶变换），FFT（快速傅里叶变换），IFFT（快速傅里叶逆变换），conv（卷积：圆周卷积、线性卷积），主要应用于信号处理，既可以对实序列做上述操作，也可以对复序列。-This process includes: DFT (Discrete Fourier Transform), FFT (fast Fourier transform), IFFT (inverse fast Fourier transform), conv (convolution: circular convolution, linear convolution), mainly used signal processing, either on the actual sequence to do the operation, can also be complex sequence.
Platform: | Size: 735232 | Author: yangshoping | Hits:

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