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此程序由matlab实现,用于对语音信号的功率谱密度进行估计.希望能有所帮助.-this procedure from Matlab realized, for the speech signal power spectral density estimation. hope to be helpful.
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Herbordt, W. Nakamura, S. & llermann, W. Multichannel estimation of the power spectral density of noise for mixtures of nonstationary signals IPSJ SIG Technical Reports, 2004 ,131 ,211 - 216-Herbordt, W. Nakamura, S. & llermann, W. Multichannel esti
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提取信号七个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。-Extraction based on instantaneous information signal of seven
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提取信号七个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。-Extraction based on instantaneous information signal of seven
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语音文件分段功率谱密度分析程序,以一定界面形式在屏幕上提示用户输入语音信号，检索语音文件数据区，显示分段功率谱密度统计参数-Sub-power spectral density voice file analysis program, to a certain form interface screen prompts the user to input speech signal, retrieve the voice file data area to show statistical pa
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功率谱密度和加噪声以后的情况，用于通信原理仿真-The situation after the power spectral density processing noise for communication principle simulation
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分析低通白噪声和带通白噪声的功率谱密度函数和自相关函数的性质，并举例同时绘制其图像。-Analysis of white noise low-pass and band-pass white noise power spectral density function and the nature of the autocorrelation function and example to draw its image at the same time.
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分析测量信号的FFT功率谱及功率谱密度，比较两者之间的差异-FFT power spectrum and power spectral density analysis comparing the measured signal difference between the two,
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用FFT计算信号的功率谱密度时，需要先计算FFT，再计算双边谱密度，然后计算单边谱密度。在matlab里注意FFt要除以采样点数，计算双边谱时要注意除以频率分辨率。
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When calculated using the FFT power spectrum density signal, you need to calculate the FFT, and then calculate the bilateral spectral density, and then calculate
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产生随机信号观测样本，不同信噪比和归一化频率。分别用BT法和周期图法估计功率谱密度。-Generate random signal observation samples, different signal to noise ratio and normalized frequency.Using method of BT and cycle diagram method to estimate the power spectral density.
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M序列的自相关函数和功率谱密度计算的m文件完整代码.-M sequence autocorrelation function and power spectral density calculated M_file complete code.
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通过具有随机结构参数的四分之一车辆模型研究了具有不确定性结构参数的车辆在受到来自道路的随 机激励作用下的振动响应问题。将簧上质量、簧下质量、悬挂阻尼、悬挂刚度以及轮胎刚度均认为是随机变量。将路面的不平整引起的对车辆的激励看作高斯随机过程并通过简单指数功率谱密度来建立力学模型。-By a quarter vehicle model with random parameters studied vehicle structure uncertain structural parameters of
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最终的权值矩阵就是滤波器的系数，包括压缩比、运行时间和计算复原图像的峰值信噪比,计算目标和海洋回波的功率谱密度。- The final weight matrix is ??the filter coefficient, Including compression ratio, image restoration computing uptime and peak signal to noise ratio, Calculating a target and ocean echo power s
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做视觉测量的上位机代码,计算目标和海洋回波的功率谱密度,连续相位调制信号(CPM)产生。- Do Vision Measurement PC code, Calculating a target and ocean echo power spectral density, Continuous phase modulation signal (CPM) to produce.
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非归零型差分相位调制信号建模与仿真分析 ，计算目标和海洋回波的功率谱密度,在MATLAB中求图像纹理特征。- NRZ type differential phase modulation signal modeling and simulation analysis, Calculating a target and ocean echo power spectral density, In the MATLAB image texture feature.
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计算加权加速度,计算目标和海洋回波的功率谱密度,用于时频分析算法。- Weighted acceleration, Calculating a target and ocean echo power spectral density, For time-frequency analysis algorithm.
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搭建OFDM通信系统的框架，计算目标和海洋回波的功率谱密度,包括调制，解调，信噪比计算。- Build a framework OFDM communication system, Calculating a target and ocean echo power spectral density, Includes the modulation, demodulation, signal to noise ratio calculation.
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