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用Welch法进行功率谱估计
- 考虑L的三个不同值:L=256(3个数据段),L=128(7个数据段)和L=64(15个数据段)。各自的谱估计图如上图所示。可以明显的看到,加窗明显的减小了频谱上的假谱峰,但也更加进一步平滑了谱峰。所以,对于L=64的情况,在ω=0.8π的谱线可以很确定的辨认,但是那两个靠近的谱峰不容易区分。对于L=128的情况,这种情况提供了在分离和检测间最好的均衡。当然,对于在L=256时的情况,效果是更好的,能够从谱估计图上明显的分辨出三条谱线的存在以及它们幅度关系的强弱。 除了Welch法外,还可以采用
随机信号功率谱分析
- 理解随机信号功率谱分析原理和方法。 (1) 生成信号,被淹没在在噪声中; (2) 试用周期图法估计信号的功率谱; (3) 选用不同窗,使用修正周期图法估计信号的功率谱; (4) 对一段语音信号,使用LD算法估计其功率谱; (5) 详细列出功率谱估计的步骤和原理。 -understanding of random signal power spectrum analysis principles and methods. (1) generate signals
lsarma
- 本程序给出了最小二乘的ARMA模型的功率谱估计方法
基于MUSIC方法功率谱估计的matlab仿真
- 基于MUSIC方法功率谱估计的matlab仿真,包含实验详细报告,源码,运行结果,及其分析。,MUSIC-based method of power spectrum estimation matlab simulation, including a detailed report on the experiment, source, run results, and analysis.
p_morden.rar
- 用Matlab实现现代功率谱估计,主要有Levinson法,Burg法,协方差法及修正协方差法,四种方法的结果放到一起进行比较,有详细的注释,Using Matlab implementation of modern power spectrum estimation, the main has Levinson Law, Burg method covariance method covariance method, and the amendment, four ways to put to
auto_correlation
- 用Blackman-Tukey方法(自相关法)实现对任意输入的实序列函数x(n)作功率谱估计。-Using Blackman-Tukey method (autocorrelation method) to achieve the actual sequence of arbitrary input function x (n) for power spectrum estimation.
comparison-of-some-power-spectrum-estimation
- 这里几种功率谱估计方法,对它们的性能进行了比较,可供参考!-Here several methods of power spectrum estimation of their performance are compared for the reference!
psd1ar
- 功率谱估计,多种方法,近似算法都有,值得参考-Power spectrum estimation, a number of ways, both approximate algorithm, it is also useful
svd-tls
- 基于svd-tls功率谱分析的方法 ,是现代谱估计的一种常用方法-svd-tls-based power spectral analysis method is a kind of modern spectral estimation methods commonly used
ww
- 功率谱分析的MATLAB实例,经典谱估计的几种方法介绍-Power spectral analysis of the MATLAB examples, classical spectral estimation of several ways to introduce
wavelet_power_spectral
- 基于小波变换的功率谱估计MATLAB仿真代码,包括小波变换的基本原理实现,mallat算法的实现,经典功率谱和现代功率谱估计的主要方法仿真比较。-Based on wavelet transform power spectrum estimation MATLAB simulation code, including the basic principles of wavelet transform to achieve, mallat Algorithm, classic and modern
fft_noise
- 通过fft,求噪声功率谱的功率谱估计方法。-By fft, seeking the power spectrum of the noise power spectrum estimation method.
classic
- 经典信号功率谱估计方法的matlab实现-Classical power spectrum estimation methods matlab implementation
AR_Spectrum
- 适用于AR模型的功率谱估计,包括基于Yule-Walker方法估计序列功率谱以及基于最大熵方法的功率谱估计。-AR model for power spectrum estimation, including methods based on Yule-Walker power spectrum estimation sequence and the method based on maximum entropy power spectrum estimation.
estimation
- 针对给定信号采用不同的经典功率谱估计方法进行信号的谱估计,性能不错!-For a given signal using different classical power spectrum estimation methods for signal spectrum estimation, performance, good!
spectrum-stimation
- 针对给定信号采用不同的现代功率谱估计方法进行功率谱估计,并附有PPT讲义!-For a given signal using a different method of power spectrum estimation of modern power spectrum estimation, along with PPT handouts!
pilao
- 脑电信号处理的各种方法包括功率谱估计方法-The various methods of EEG Signal Processing
diff_all_method
- 功率谱估计方法比较,方法包括:自相关法、加窗平滑法、平均周期图法、Welch-failed to translate
bin
- 信号频谱分析方法一级使用非参数方法直接使用信号进行功率谱估计,以周期图法为例,提供了周期图法和welch法估计信号功率谱(The signal spectrum analysis method uses the nonparametric method to directly use the signal to estimate the power spectrum. The periodogram method is used as an example to provide the peri
几种常用功率谱估计法
- 几种常用的功率谱估计方法:相关函数法(BT 法),周期图法( periodogram),Bartlett 法,Welch 法,AR 功率谱曲线( p=50)(Several commonly used power spectrum estimation methods: correlation function method (BT method), periodogram method, Bartlett method, Welch method, AR power spectrum curv