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Description: 掌握几种典型窗函数的性质、特点，比较几种典型的窗函数对信号频谱的影响。
-grasp some typical window function of the nature, characteristics and several typical window function of the signal spectrum impact.
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Size: 117605 |
Author: sff |
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Description: 凯撒窗函数的源代码/MATLAB
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Size: 2626 |
Author: aizhouliguo |
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Description: FIR数字滤波器设计，窗函数在信号处理中的作用-FIR digital filter design, window function in the signal processing of
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Size: 2048 |
Author: 陆魁 |
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Description: 完成经济型片上数采系统所需的分析功能，目前暂定为 FFT，各种窗函数，以后待硬件完善后再继续添加-economic unit completed several mining system for the analysis function, tentatively scheduled for FFT, Window functions, beyond question hardware continue to improve after adding
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Size: 3072 |
Author: 徐虎 |
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Description: 数字带通滤波器的设计过程。共3个源程序。其中，dos.cpp为带通FIR的源程序，其中的滤波器阶数n，滤波器的低频fln，滤波器的高频fhn，窗函数w，可以按照自己的要求改变。这里采用的是汉宁窗。主函数main.cpp实现输入与fir的h(n)的卷积，输出结果Y(n)，并将其存储在y.txt中。最后，graphics.cpp从y.txt读取数据，再由语句画出波形，可以清楚地看出计算结果是否正确，并进行比较。-digital band-pass filter design process. A total of three sources. Among them, dos.cpp FIR bandpass to the source, the filter order n, the low-frequency filter FLN, the high-frequency filter fhn, window function w, in accordance with the requirements change. Here is the Hanning window. The main function main.cpp achieve the input and fir h (n) convolution, the output Y (n), and store them in y.txt China. Finally, graphics.cpp y.txt read data from and then draw waveform statement, we can clearly see whether calculations are correct, and comparisons.
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Size: 2048 |
Author: feide |
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Description: 加窗离散傅立叶变换，用DFT对离散信号进行谱分析，通过选用不同的加窗函数来抑制信号截断造成的频谱泄漏-windowed discrete Fourier transform, DFT right discrete signal spectral analysis, the increase in the alternative window function to curb the disconnect signal leakage spectrum
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Size: 1024 |
Author: 戴曙君 |
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Description: 掌握几种典型窗函数的性质、特点，比较几种典型的窗函数对信号频谱的影响。
-grasp some typical window function of the nature, characteristics and several typical window function of the signal spectrum impact.
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Size: 117760 |
Author: sff |
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Description: 用矩形窗、三角窗，汉宁窗，海宁窗等多种窗口设计有限长单位脉冲响应滤波器-with rectangular windows, triangular windows, Hanning window, multiple windows Haining window design finite impulse response filter units
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Size: 6144 |
Author: 孙涛 |
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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
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Size: 1024 |
Author: 海洋 |
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Description: 是有关DSP中著名的契比雪夫的窗函数,还是不错的,欢迎使用-DSP is the famous Lease Chebyshev window function, or good, welcomed the use of
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Size: 1024 |
Author: yueyue |
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Description: 用凯泽窗设计线性相位带通FIR滤波器
计算理想带通滤波器单位抽样响应ha(n)的M函数文件dbpfr.m
计算凯泽窗函数wk(n)的M函数文件kwnd.m-Keyser window design with linear phase FIR bandpass filter calculate an ideal band-pass filter response ha sampling units ( n) M function calculation Keyser dbpfr.m document window function wk (n) M-function document kwnd.m
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Size: 132096 |
Author: 黄耀东 |
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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
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Size: 155648 |
Author: 陈伟 |
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Description: 求切比雪夫窗函数和频谱；求凯塞窗函数和频谱；求凯塞窗函数和频谱等等滤波器的设计的一些程序-for Chebyshev window function and spectrum; For Kaiser window function and spectrum; Kaiser window function for the spectrum and the filter design, and so on, some procedures
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Size: 4096 |
Author: 陈紫萱 |
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Description: 产生数字信号处理中常用的几种窗函数，包括ectangular window , triangular window ,cosin window , Hanning window ,
Hamming window , Blackman window ,Papoulis window-producing a digital signal processing used in several window function, including ectangular window, triangular window. cosin window, Hanning window, Hamming window, Blackman window. Papoulis window
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Size: 1024 |
Author: zhao |
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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.
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Size: 148480 |
Author: qinyang |
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Description: 利用窗函数法设计FIR滤波器，给出其抽样响应 。程序中调用了子程序mwindow-Using window function design FIR filter, given in response to its sample. Procedure calls the subroutine mwindow
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Size: 3072 |
Author: 张华 |
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Description: 计算七类窗函数并给出归一化对数幅频曲线，同时也是利用窗函数法设计FIR滤波器的程序MDEFIR1所调用的子程序MWINDOW.C-Calculation of seven types of window function and gives the normalized logarithmic amplitude-frequency curve, but also use a window function method FIR filter design procedures MDEFIR1 by subroutine calls MWINDOW.C
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Size: 2048 |
Author: 张华 |
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Description: 最近用Mega128写了一个128点FFT程序，浮点运算，加汉宁窗。由于窗函数和旋转因子通过查表得到，所以速度还可以，程序中给的初值是通过高速AD采集的20KHz正弦信号。计算结果与Matlab的FFT函数得到的结果相同。 -Mega128 recently wrote a 128-point FFT procedures, floating-point operations, Hanning window. Since the window function and the twiddle factor look-up table has been adopted, so the speed can also be, the initial value to the process through high-speed AD collected 20KHz sinusoidal signal. The calculation results with the Matlab
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Size: 20480 |
Author: dfsdf |
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Description: 减少频谱泄漏，通常在采样后对信号加窗。在电机故障诊断领域，需同时考虑频率分辨率和频谱泄漏。应用最广泛的窗函数是汉宁窗。(To reduce the spectrum leakage, a window is usually added to the signal after sampling. In the field of motor fault diagnosis, frequency resolution and spectrum leakage should be considered at the same time. The window function is the most widely used Hanning window.)
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Size: 1024 |
Author: g-nice |
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Description: 写成gauss-gamma双窗函数，计算含有相干斑噪声的sar图像的梯度(The gauss-gamma double window function is used to calculate the gradient of the SAR image with the speckle noise)
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Size: 174080 |
Author: 十二只猴子 |
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