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[Other resource] 用Welch法进行功率谱估计

Description: 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，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。-consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power
Platform: | Size: 1826 | Author: 吴胜 | Hits:

[Speech/Voice recognition/combine] SPECTRUM_LMS

Description: 1、文件夹中包含了经典功率谱估计和自适应均衡算法两个实验的所有程序。 2、R.m、LMS.m、LMSmain.m为自适应均衡算法的程序： R.m用来计算输入信号的自相关矩阵及其特征值； LMS.m为时域LMS算法，用统计的方法仿真得出不同信道参数和不同步长下的学习曲线； LMSmain.m为实验主程序，按照实验要求中的具体数据得到实验结果和曲线。 3、functionx.m、fzhouqitu.m、spectrum.m、bt.m、bart_lett.m、welch.m、SPECTRUMmain.m为经典谱估计的程序： functionx.m产生需要进行谱估计的函数； fzhouqitu.m用来计算信号周期图的函数； spectrum.m是用周期图法进行谱估计的函数 bt.m是用BT图法进行谱估计的函数 bart_lett.m是用BARTLETT法进行谱估计的函数 welch.m是用WELCH法进行谱估计的函数 SPECTRUMmain.m是主程序，按照实验要求中的具体数据得到实验结果和曲线。 -a document folder contains the classic power spectrum estimation and adaptive equalization algorithm for the two experiments all the procedures. 2, R.m, LMS.m, LMSmain.m adaptive equalization algorithm for the procedure : R.m used to calculate the input signal and the correlation matrix eigenvalue; LMS.m too LMS algorithm, use statistical simulation method come to a different channel parameters and the synchronous learning curve; LMSmain.m main program for the experiment, according to the experimental requirements of the specific data and the curve of the experimental results. 3, functionx.m, fzhouqitu.m, spectrum.m. bt.m, bart_lett.m, welch.m. SPECTRUMmain.m classical spectrum estimation procedures : functionx.m have a need for spectrum estimation function; fzhouqitu.m used to calculate t
Platform: | Size: 5630 | Author: yidishui | Hits:

[Other] longteng4

Description: Welch法：Welch法对Bartlett法进行了两方面的修正：一是选择适当的窗函数w(n)，并在周期图计算前直接加进去，加窗的优点是无论什么样的窗函数均可使谱估计非负。二是在分段时,可使各段之间有重叠，这样会使方差减小。
Platform: | Size: 632 | Author: 赵西玲 | Hits:

[Other resource] powerp

Description: 关于功率谱估计的,周期图法,自相关法,bartlett法和welch法,还有一个复倒谱估计的代码
Platform: | Size: 1611 | Author: 吴彬彬 | Hits:

[Other resource] averageperiodfft

Description: 平均周期法计算 fft的结果，Bartlett平均周期图的方法是将N点的有限长序列x(n)分段求周期图再平均，Welch法对Bartlett法进行了两方面的修正，一是选择适当的窗函数w(n)，并再周期图计算前直接加进去，加窗的优点是无论什么样的窗函数均可使谱估计非负。二是在分段时，可使各段之间有重叠，这样会使方差减小。
Platform: | Size: 1117 | Author: 刘洋 | Hits:

[Other resource] matlabcode

Description: 有直接法,间接法,Bartlett法,Welch法
Platform: | Size: 1473 | Author: yyb_whu | Hits:

[matlab] 用Welch法进行功率谱估计

Description: 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，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。-consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power
Platform: | Size: 2048 | Author: | Hits:

[Speech/Voice recognition/combine] SPECTRUM_LMS

Description: 1、文件夹中包含了经典功率谱估计和自适应均衡算法两个实验的所有程序。 2、R.m、LMS.m、LMSmain.m为自适应均衡算法的程序： R.m用来计算输入信号的自相关矩阵及其特征值； LMS.m为时域LMS算法，用统计的方法仿真得出不同信道参数和不同步长下的学习曲线； LMSmain.m为实验主程序，按照实验要求中的具体数据得到实验结果和曲线。 3、functionx.m、fzhouqitu.m、spectrum.m、bt.m、bart_lett.m、welch.m、SPECTRUMmain.m为经典谱估计的程序： functionx.m产生需要进行谱估计的函数； fzhouqitu.m用来计算信号周期图的函数； spectrum.m是用周期图法进行谱估计的函数 bt.m是用BT图法进行谱估计的函数 bart_lett.m是用BARTLETT法进行谱估计的函数 welch.m是用WELCH法进行谱估计的函数 SPECTRUMmain.m是主程序，按照实验要求中的具体数据得到实验结果和曲线。 -a document folder contains the classic power spectrum estimation and adaptive equalization algorithm for the two experiments all the procedures. 2, R.m, LMS.m, LMSmain.m adaptive equalization algorithm for the procedure : R.m used to calculate the input signal and the correlation matrix eigenvalue; LMS.m too LMS algorithm, use statistical simulation method come to a different channel parameters and the synchronous learning curve; LMSmain.m main program for the experiment, according to the experimental requirements of the specific data and the curve of the experimental results. 3, functionx.m, fzhouqitu.m, spectrum.m. bt.m, bart_lett.m, welch.m. SPECTRUMmain.m classical spectrum estimation procedures : functionx.m have a need for spectrum estimation function; fzhouqitu.m used to calculate t
Platform: | Size: 5120 | Author: | Hits:

[Other] longteng4

Description: Welch法：Welch法对Bartlett法进行了两方面的修正：一是选择适当的窗函数w(n)，并在周期图计算前直接加进去，加窗的优点是无论什么样的窗函数均可使谱估计非负。二是在分段时,可使各段之间有重叠，这样会使方差减小。-Welch method: Welch method of Bartlett method amendments in two respects: First, select the appropriate window function w (n), and in the cycle before CALPHAD directly incorporated, plus the advantage of the window, no matter what kind of window function can be so spectral estimation of non-negative. Second, when in subparagraph can overlap between paragraphs, this would reduce the variance.
Platform: | Size: 1024 | Author: 赵西玲 | Hits:

[DSP program] powerp

Description: 关于功率谱估计的,周期图法,自相关法,bartlett法和welch法,还有一个复倒谱估计的代码-On the power spectrum estimation, periodogram, since the relevant law, bartlett law and Welch law, there is a Complex Cepstrum estimated code
Platform: | Size: 1024 | Author: | Hits:

[Algorithm] matlabcode

Description: 有直接法,间接法,Bartlett法,Welch法-有????? ????? Bartlett ? Welch
Platform: | Size: 1024 | Author: yyb_whu | Hits:

[matlab] spect

Description: 利用直接法、间接法、以及Bartlett窗及Hamming窗下的Welch法进行功率谱分析-Using the direct method, indirect method， and the Bartlett window and a Hamming window in the Welch method for power spectral analysis
Platform: | Size: 1024 | Author: 张云鹏 | Hits:

[Algorithm] daima

Description: 随机信号谱分析技术实现 随机信号谱估计及质量评价。 离散随机信号通过线性时不变系统时，系统所产生的响应。 功率谱估计的实现方法：自相关函数法、周期图法、Bartlett法、Welch法、MTM法、MUSIC法 -Random signal spectral analysis of random signal spectral estimation and quality evaluation. Discrete random signals through linear systems, the system generated response. Realization of the power spectrum estimation: autocorrelation function, periodogram, Bartlett law, Welch method, MTM method, MUSIC method
Platform: | Size: 11264 | Author: 李倩 | Hits:

[matlab] Power-spectrum-estimation

Description: 功率谱估计基本算法，包括Bartlett，welch等-Power spectrum estimation
Platform: | Size: 4096 | Author: 赵诚 | Hits:

[matlab] Non-Parametric-Methods

Description: MATLAB code for non parametric spectrum estimation. Bartlett, welch, correlogram , periodogram
Platform: | Size: 5120 | Author: Sahida | Hits:

[Communication-Mobile] test

Description: 几种基本的预失真功率谱仿真，包括直接法，间接法、bartlett法、welch法-Several pre-distortion power spectrum of the basic simulation，Including direct, indirect method, bartlett law, welch method
Platform: | Size: 1024 | Author: 唐城凯 | Hits:

[matlab] spectrum-estimation

Description: 多种经典谱估计的方法，直接法谱估计，间接法谱估计，Bartlett谱估计，welch谱估计（含多种窗口的实现）。-A variety of classical spectral estimation method, direct method spectrum estimation, spectral estimates of the indirect method, Bartlett spectrum estimation, Welch spectrum estimation (including a variety of window).
Platform: | Size: 6144 | Author: 曾柯益 | Hits:

[matlab] AR-model-power-spectrum-estimation

Description: 功率谱估计性能分析及其MATLAB实现，间接法、直接法、改进的周期图法Welch法、Bartlett法 -Power spectrum estimation performance analysis on MATLAB, the indirect method, direct method, improved periodogram the Welch Law, Bartlett method
Platform: | Size: 354304 | Author: zhaoyun | Hits:

[matlab] classicalspectrum

Description: 使用matlab实现经典功率谱估计，包括周期图法，Bartlett法，Welch法。机器比较（使用MATLAB函数）-Classical Power Spectrum Estimation using matlab functions, including periodogram method,Bartlett method Welch mehod.
Platform: | Size: 1024 | Author: Li Bo | Hits:

[] welch

Description: MATLAB程序，估计实际应用中得到数据的功率谱(this is a matlab program And it's feature is to estimat the power spectrum of the data obtained in practical applications)
Platform: | Size: 1024 | Author: wwll | Hits:
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