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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
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Description: 序列x(n)的Bartlett法功率谱估计
用matlab实现-sequence x (n) Bartlett power spectrum estimation method used to achieve Matlab
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Author: cjl |
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Description: Bartlett法：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。-Bartlett Law: Bartlett average periodogram method is limited to N-point long sequence x (n) Sub-seeking re-periodogram average.
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Size: 1024 |
Author: 赵西玲 |
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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.
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Author: 赵西玲 |
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Description: Generate 100 samples of a zero-mean white noise sequence with variance , by using a uniform random number generator.
a Compute the autocorrelation of for .
b Compute the periodogram estimate and plot it.
c Generate 10 different realizations of , and compute the corresponding sample autocorrelation sequences , and . Compute the average autocorrelation sequence as and the corresponding periodogram for .
d Compute and plot the average periodogram using the Bartlett method.
e Comment on the results in parts (a) through (d).
-Generate 100 samples of a zero-mean white noise sequence with variance, by using a uniform random number generator.a Compute the autocorrelation of for. B Compute the periodogram estimate and plot it. C Generate 10 different realizations of, and compute the corresponding sample autocorrelation sequences, and. Compute the average autocorrelation sequence as and the corresponding periodogram for. d Compute and plot the average periodogram using the Bartlett method. e Comment on the results in parts (a) through (d).
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Author: 冀晗 |
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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
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Description: Bartlett，capon，cupon等matlab程序-Bartlett, capon, cupon procedures such as matlab
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Size: 2048 |
Author: 李京伦 |
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Description: 本源码是用于现代谱估计的一种方法：巴特利特主分量估计算法，对3个频率进行分辨。-The source code is for a modern spectral estimation methods: Bartlett principal component estimation algorithm, the three frequency-resolved.
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Author: 胡建红 |
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Description: 有直接法,间接法,Bartlett法,Welch法-有????? ????? Bartlett ? Welch
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Size: 1024 |
Author: yyb_whu |
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Description: 书名：Foundations of Algorithms Using C++ Pseudocode, Third Edition
作者：Richard Neapolitan
出版：Jones and Bartlett Publishers 2003
ISBN：0763723878-Title: Foundations of Algorithms Using C++ Pseudocode, Third Edition Author: Richard Neapolitan publication: Jones and Bartlett Publishers 2003ISBN: 0763723878
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Size: 19275776 |
Author: xxz |
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Description: The Window Design Method
The basic idea behind the design of linear-phase FIR filters using the window
method is to choose a proper ideal frequency-selective filter [which always has
a noncausal, infinite duration impulse response] and then truncate its impulse
response hd[n] to obtain a linear-phase and causal FIR filter h[n]. To truncate the
impulse response of the ideal filter a time window w[n] is used. Available windows
in Matlab are rectangular [or boxcar in Matlab], bartlett, hamming, hanning
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Author: Rizwan |
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Description: 波达方向DOA估计的程序，其中运用了MUSIC以及两种经典的波束形成的方法（Bartlett以及CAPON)-DOA DOA estimation procedures, as well as the use of two classic MUSIC beamforming method (Bartlett and CAPON)
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Author: 周清晨 |
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Description: 在功率谱估计中采用Bartlett法对信号进行功率谱估计。-In the power spectrum estimation method used in Bartlett signal power spectrum estimation.
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Size: 1024 |
Author: 帽子 |
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Description: c++ plus Data Structures 3rd Edition. Jones and Bartlett.
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Size: 14872576 |
Author: jing |
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Description: Bartlett power spectrum estimation (Nonparametric methods for power spectrum estimation)
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Size: 1024 |
Author: hakan |
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Description: Example of spectrum with Bartlett method. We have two signals in gaussian noise
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Size: 1024 |
Author: artsil |
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Description: It includes a Matalb files to compute the effect of differnt Frame size and Width on differnt window function ,e.g. Bartlett, Hamming etc.Graphical results are plotted for all cases. It includes a readme file to execute the matlab codes.-It includes a Matalb files to compute the effect of differnt Frame size and Width on differnt window function ,e.g. Bartlett, Hamming etc.Graphical results are plotted for all cases. It includes a readme file to execute the matlab codes.
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Author: sl3gn |
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Description: 利特的USB-RS232的驱动咯，有需要的可能用得着，我搜了好久找到的。-Bartlett' s USB-RS232 driver slightly, if necessary, may Yongde Zhao, I found a long time to find.
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Author: 金俊 |
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Description: 用改进的周期图（Bartlett）法求1KHz方波信号加高斯白噪声的功率谱密度-Use the Bartlett to compute the power spectral density
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Size: 1024 |
Author: yangxin |
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Description: 本程序利用平均周期图法（bartlett法）对信号进行功率谱估计，指定输入响应信号，根据实际情况调整参数，输出功率谱图-The program uses the average periodogram method (bartlett method) on the signal power spectrum estimation, specify the input response signal, adjust the parameters according to actual situation, the output power spectrum
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Size: 1024 |
Author: big163 |
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