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正交信号校正法主要用于近红外光谱矩阵的预处理。其原理是将光谱阵与全氮含量阵正交,滤除光谱与因变量Y阵无关的信号,再建立定量校正模型,达到简化模型及提高模型预测能力的目的。-Orthogonal Signal Correction(OSC) removes variance in the X-block which is orthogonal to the Y-block. Such variance is identified as some number of factors (describ
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preprocessing ECG signal with matlab
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通过基于HMM的语音识别系统的基本结构,详细介绍了语音信号采集、预处理、MFCC特征参数提取、HMM训练和HMM识别等主要模块的基本原理 并针对实际应用中HMM存在的模型初始化和数据溢出等问题进行分析,引入了一些能提高系统性能的相应措施。-By the basic structure of HMM-based speech recognition system, details the basic principles of audio signal acquisition, preproces
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信号处理:预处理 ,时域,频域识别出模态参数(Signal processing: preprocessing, time domain and frequency domain identification of modal parameters)
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对信号进行梅尔倒谱系数特征采集之前的预处理,包括分帧加窗、基于短时能量的双门限判别、除噪、预加重等(The preprocessing of Mel cepstrum coefficients before the signal is carried out, including frame windowing, double threshold discrimination based on short-time energy, denoising and pre emphasis)
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1)通过随机建立法处理振动响应信号,是时域数据模态辨识的预处理方法 2)通过有理多项式辨识模态参数(The random establishment method is used to deal with the vibration response signal, and it is a preprocessing method for the time domain data modal identification.)
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能熵比预处理,自相关法提取语音信号或者哼唱歌曲的基音(Energy Entropy Ratio Preprocessing and Autocorrelation Method to Extract the Pitch of Speech Signal or Humming Song)
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针对短期风电功率预测,提出一种基于经验小波变换预处理的核极限学习机组合预测方法。首先采用 EWT 对风电场实测风速数据进行自适应分解并提取具有傅立叶紧支撑的模态信号分量,针对每个分量分别构建 KELM 预测模型,最后对各个预测模型的输出进行叠加得到风速预测值并根据风电场风功特性曲线可得对应风电功率预测值。(Aiming at short-term wind power prediction, a kernel-based learning machine combination predicti
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prony工具箱用于对信号进行prony分析,(We have designed a software tool in MATLAB, the Prony Toolbox, to perform Prony analysis. Prony Toolbox (PTbox) is designed based on several considerations including data preprocessing, model order selection, model order selec
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关于管道泄漏泄漏信号的预处理,应用EEMD算法对真实泄漏信号进行仿真。(As for the preprocessing of pipeline leakage signal, EEMD algorithm is used to simulate the real leakage signal.)
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