Description: 自己编写的，1024点快速傅里叶变换、倒频谱分析、功率谱分析及其Applet曲线显示程序源代码。 说明清楚，附有验证使用的数据文件-themselves prepared in 1024 point fast Fourier transform, cepstrum analysis, power spectrum analysis and Applet curve shows the source code. Make it clear with the use of the test data files Platform: |
Size: 6144 |
Author:冯瑶 |
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Description: 用matlab产生不同的波型，对其进行FFT 功率谱，对数谱然后用IFFT进行反变换-Using matlab produce different wave type, its FFT power spectrum, the spectrum and then use the IFFT to inverse transform Platform: |
Size: 1024 |
Author:方杰平 |
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Description: FFT算法进行ＦＦＴ 、ＩＦＦＴ、功率谱计算，包括Hamming 窗、Hanning 窗、triangle 窗、Blackman 窗、4 term Blackman-Harris 窗几种窗函数的功率谱计算功能。-FFT algorithms FFT, IFFT, power spectrum calculation, including the Hamming window, Hanning window, triangle window, Blackman window, 4 term Blackman-Harris window of several of the power spectrum window function computing power. Platform: |
Size: 372736 |
Author:huang |
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Description: 谱估计（建立二阶AR模型）、利用FFT求解功率谱估计、利用AR模型的Yule-Walker方程求解模型参数等-Spectral estimation (the establishment of second-order AR model), using FFT to solve the power spectrum estimation using AR model of Yule-Walker equation model parameters such as Platform: |
Size: 2048 |
Author:chen |
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Description: implement 1D and 2D FFT and Inverse 2D FFT ,obtain the power spectrum from a set of FFT coefficients and achieve the Butterworth Lowpass Filter Platform: |
Size: 2048 |
Author: lu jie |
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Description: ex6_1 ～ ex6_3二项分布的随机数据的产生
ex6_4 ～ ex6_6通用函数计算概率密度函数值
ex6_7 ～ ex6_20常见分布的密度函数
ex6_21 ～ ex6_33随机变量的数字特征
ex6_34 采用periodogram函数来计算功率谱
ex6_35 利用FFT直接法计算上面噪声信号的功率谱
ex6_36 利用间接法重新计算上例中噪声信号的功率谱
ex6_37 采用tfe函数来进行系统的辨识，并与理想结果进行比较
ex6_38 在置信度为0.95的区间上估计有色噪声x的PSD
ex6_39 在置信度为0.95的区间上估计两个有色噪声x，y之间的CSD
ex6_40 用程序代码来实现Welch方法的功率谱估计
ex6_41 用Welch方法进行PSD估计，并比较当采用不同窗函数时的结果
ex6_42 用Yule-Walker AR法进行PSD估计
ex6_43 用Burg算法计算AR模型的参数
ex6_44 用Burg法PSD估计
ex6_45 比较协方差方法与改进的协方差方法在功率谱估计中的效果
ex6_46 用Multitaper法进行PSD估计
ex6_47 用MUSIC法进行PSD估计
ex6_48 用特征向量法进行PSD估计-ex6_1 ~ ex6_3 binomial distribution of the generated random data
ex6_4 ~ ex6_6 generic function value of the probability density function
ex6_7 ~ ex6_20 common distribution density function
ex6_21 ~ ex6_33 figure characteristics of random variables
periodogram function ex6_34 used to calculate the power spectrum
ex6_35 direct method using FFT signal above the noise of the power spectrum
ex6_36 recalculated using the indirect method on the example of the power spectrum of noise signal
tfe function ex6_37 used for system identification, and results were compared with the ideal
ex6_38 at 0.95 confidence interval for the estimated colored noise x on the PSD
ex6_39 at 0.95 confidence interval of the two colored noise on the estimated x, y between the CSD
ex6_40 code used to achieve the Welch method of power spectrum estimation
Welch method ex6_41 with PSD estimates, and compare different window function when the results when
ex6_42 using Yule-Walker AR method is esti Platform: |
Size: 7168 |
Author:张满超 |
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Description: 本文件包含三个小程序，分别为用fft实现功率谱估计、实现快速卷积和快速相关。对了解fft在c中的编程很有帮助-This document contains three procedures were used to achieve power spectrum estimation fft, fast convolution and fast correlation. Fft to know programming in c in the helpful Platform: |
Size: 13312 |
Author:魏玮 |
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Description: dsp算法40例,包括fft、滤波器、谱运算等
1． 将模拟滤波器转变为数字滤波器。
2． 由得到幅频响应 。
3． 用Burg算法求AR模型的参数。
4． 由AR模型参数得到功率谱。
5． 用Levinson算法求解Yule-Walker方程以得到 阶AR模型的参数 。
6． 实现双线性Z变换。
7． 设计巴特沃斯模拟低通滤波器，求出转移函数 。
8． 设计切比雪夫I型模拟低通滤波器，求出转移函数 。
9． 直接由定义求 点复序列 的DFT 。
10．利用经典的Cooley-Tukey基2算法求复序列 的DFT 。
-dsp algorithms 40 cases, including the fft, filter, spectrum operations, etc.
1. Analog filters into digital filters.
2. Amplitude-frequency response by obtained.
3. Burg algorithm for AR model with the parameters of demand.
4. AR model parameters obtained from the power spectrum.
5. Levinson algorithm using Yule-Walker equations to get the first-order AR model
parameters.
6. The bilinear Z transform to achieve.
7. Design of Butterworth analog low-pass filter, find the transfer function.
8. Design of Chebyshev-I analog low-pass filter, find the transfer function.
9. Directly from the definition of point complex sequence of DFT.
10. The use of the classic Cooley-Tukey radix-2 algorithm is seeking re-sequence of DFT.
....... Platform: |
Size: 59392 |
Author:jack |
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Description: function [f,Py,w,fp,Pmax]=spectrum(ug,dt)
spectrum Compute the one-sided psd from the power spectrum
refer to the help of fft and periodgram.m.
codied by Dr. Ping TAN
June, 2005- function [f, Py, w, fp, Pmax] = spectrum (ug, dt) spectrum Compute the one-sided psd from the power spectrum refer to the help of fft and periodgram.m. codied by Dr. Ping TAN June, 2005 Platform: |
Size: 1024 |
Author:manman |
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Description: 该文件为功率谱估计的一个子程序，对广大读者很有帮助，现在拿出来和大家一起分享下-The file is a subroutine power spectrum estimation of readers helpful, and now share with everyone out under Platform: |
Size: 1024 |
Author:林敏 |
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Description: FFT algorithms FFT, IFFT, power spectrum calculation, including the Hamming window, Hanning window, triangle window, Blackman window, 4 term Blackman-Harris window of several of the power spectrum window function computing power. Platform: |
Size: 1024 |
Author:firdausmustaffa |
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Description: "FFT功率谱”用于计算时间信号的平均功率谱。连接至“时间信号”输入端的数据类型决定使用此函数的某个多态实例。-" FFT power spectrum" is used to calculate the average power spectrum of time signal. Connected to the " timing signal" type of input data to a decision to use this function polymorphic instance. Platform: |
Size: 22528 |
Author:geaping |
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Description: 本工具包包括用matlab计算功率谱的简单程序，消噪程序及fft变换程序-The kit includes a simple program to calculate the power spectrum using matlab denoising procedures and fft transform program Platform: |
Size: 1024 |
Author:chenzhongling |
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Description: 通过labview 对信号进行分析，主要包括基于FFT求信号功率谱(The signal is analyzed by LabVIEW, mainly including the signal power spectrum based on FFT) Platform: |
Size: 51200 |
Author:yingzhiwuying
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Description: 利用fft方法和pwelch方法在计算光纤水听器噪声功率谱时的对比程序(A comparison program for calculating the noise power spectrum of fiber optic hydrophone by using FFT and Pwelch methods) Platform: |
Size: 1024 |
Author:定常流动 |
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Search - fft power spectrum