signal autocorrelation

This paper deals with the implementation of random signal characteristic values ( autocorrelation and power spectrum estimation) by NTT. A set of NTT formulas that process long sequence signals readily have been derived.

本文就数论变换实现随机信号的特征值&自相关和功率谱估计这一问题进行了探讨，并导出一套极易处理长序列信号的计算公式。

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Depending on the autocorrelation property of a judiciously chosen training sequence, a redundance-included demodulation template ( RDT) can be extracted from the received signal by separating, shifting and realigning two connected portions in the observation window.

通过引入一个具有特殊自相关特性的训练序列，可以将一个符号长度的信号中两个相连接的部分，进行拆分、移位并重置，最后重建为一个有冗余的解调模板（RDT）。

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The conclusion was verified by simulation signals with different noise intensity and rolling bearing's defect vibration signal. Analysis shows that the proposed method is more effective than direct modulation or time delayed autocorrelation demodulation in denoising or clarifying modulation information.

不同噪声强度仿真数据和滚动轴承故障振动信号实验数据分析表明，该方法比直接解调或仅采用时延相关解调更能有效抑制噪声，凸现信号调制信息。

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In this paper, multi-parameters ( short-time energy, short-time zero-crossing rate and autocorrelation function values) combination has been adopted to judge the unvoiced/ voiced of speech signal. Then circular average magnitude difference function has been used to calculate pitch.

采用基于多参数组合方法（短时能量、短时过零率、自相关函数值）进行语音信号清浊音判别，利用循环平均幅度差函数进行基音周期计算。

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Signal analysis, including spectral analysis, specific energy computation, ringing count rate computation, event count rate computation, signal center frequency computation, autocorrelation analysis, and frequency spectrum energy instability computation.

信号分析。包括：频谱分析、能量率计算、振铃计数率计算、事件计数率计算、信号中心频率计算、自相关分析、频谱能量不稳定度计算。

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Analyze window shows the microphone signal, autocorrelation data and absolute value of autocorrelation data.

分析窗口展示相关数据的话筒信号 、 自相关数据和绝对值.

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