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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
psd
- 计算ARMA(p，q)模型的功率谱密度。 形参说明： b——双精度实型一维数组，长度为(q+1),存放ARMA(p，q)模型的滑动平均系数。 a——双精度实型一维数组，长度为(p+1),存放ARMA(p,q)模型的自回归系数。 q——整型变量,ARMA(p,q)模型的滑动平均阶数。 p——整型变量,ARMA(p,q)模型的自回归阶数。 sigma2——双精度实型变量,ARMA(p,q)模型白噪声激励的方差。 fs——双精度实型变量,采样频率(Hz)。
ARMASA
- An AutoRegressive Moving Average Spectral Analysis toolbox for use with Matlab.-An AutoRegressive Moving Average Spectra l Analysis toolbox for use with Matlab.
hyplas
- ************************************************************************ * * * * * THIS IS THE H Y P L A S 2.0 README FILE * * ----------------- * * * * HYPLAS is a finite element program for implicit small and large * * strain analisys of hyperelast
evaluate.rar.rar
- 影像融合评价程序，计算标准偏差，平均梯度，相关系数，光谱扭曲度等融合指标。,Image fusion evaluation, calculation of standard deviation, average gradient, correlation coefficient, spectral distortions, such as integration targets.
Periodogram-powe
- 平均周期图法和平滑平均周期图法估计功率谱 从经典功率谱估计周期图法原理入手，从理论上分析了其存在的局限性，借助Welch算法对其进行修正。依靠Matlab强大的数值分析和信号处理能力进行实验!! 用周期图法和welch法分别估计了一下信号的功率谱密度。采样频率200Hz，时间序列长度2048，FFT数据点数2048。其中welch法使用hanning窗，窗口长度600．-Average periodogram and periodogram smoothing method to est
suiji
- 随机信号分析实验之白噪声测试，白噪声信号的特性，包括均值、方差、相关函数、概率密度、频谱及功率谱密度等。- White noise of test random signal analysis experiment, white noise signal characteristic, including average value , variance, correlation function, probability density, frequency spectrum and powe
matlabcheliang
- 车辆道路谱时域频域平均功率谱分析matlab程序-Road vehicles, the average spectrum of time domain frequency domain power spectral analysis matlab program
ARIMA_model
- 基于MATLAB的ARIMA模型的源代码。ARIMA模型是自回归滑动平均求和模型，是时间序列分析模型，可以用于时间序列的预测。该代码实现了ARIMA模型的建模和谱分析过程-The ARIMA model based on MATLAB source code. ARIMA model is the sum of autoregressive moving average model is time series analysis models, can be used for time seri
chxu
- 本程序用于测量增强语音与纯净语音的对数谱距离，用于语音增强。对数谱距离越小，表明增强语音与纯净语音越接近，增强语音质量越好；反之，则增强语音质量越差。-Calculates the average log-spectral distance between CLEAN and NOISY signals. Frames are 25ms long with 60 percent (15ms) overlap, hamming windowed. RS is the remove
n_acut
- 图分割算法中的优化算法中的谱算法中的平均分割算法A-cut（average-cut ）-Figure segmentation algorithm in the optimization algorithm in the spectral segmentation algorithm, the average A-cut (average-cut)
LogSpectralDistance_LP
- 计算源信号和噪音之间的频谱差，用于噪音估计等。-Calculates the average log-spectral distance between CLEAN and NOISY signals
BERd2
- 在不同的信道条件下计算第一类优先级数据平均频谱效率的MATLAB函数-In different channel conditions, the first class priority data calculated the average spectral efficiency of the MATLAB function
Speech-signal-short-time-analysis
- 详细说明：语音信号的短时分析，主要包括：分帧、短时能量、短时平均幅度、短时过零率、短时自相关函数、短时幅度差、倒谱、复倒谱、lpc系数、lpc谱估计等 绝对保证质量，是保研后导师布置的一些基础程序-Details: short-time speech signal analysis, including: framing, short-term energy, short-term average rate, short-time zero crossing rate, short-time a
Spectral-Correlation
- Cyclic Power Spectral Density \tab\tab\tab of signals X and Y using Welch s average
test_random
- 一个计算mcs-8下的小区平均频谱效率的小程序-A calculating mcs-8 under the average spectral efficiency of small residential program
Fourier-spectral-analysis
- 不均匀间隔的平均值，数据的傅立叶频谱分析-Fourier spectral analysis for unevenly spaced, average value, data
AF
- 小区边缘频谱效率0.7b/s/Hz，平均频谱效率2.4b/s/Hz，AF中继频谱效率-The cell edge spectral efficiency 0.7b/s/Hz of average spectral efficiency 2.4b/s/Hz, AF relay spectral efficiency
293532
- An AutoRegressive Moving Average Spectral Analysis toolbox f
xknk
- An AutoRegressive Moving Average Spectral Analysis toolbox f