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Gabor变换在模态参数辨识中的应用
- 对Gabor时频变换在模态参数辨识中的应用进行了探讨,将基于Gabor系数展开的时频滤波方法作为参数辨识的前处理手段之一,该方法对于平稳、非平稳信号都适用。根据信号在时频域内的分布特征,可以直接观测系统的频率分布情况、模态密集程度、能量聚集性、各通道响应信号所含特征量的多少等信息,从而对响应信号的特征构成进行初步判断,并通过剔除、截取等操作实现对响应信号的滤波,更有利于模态参数的辨识。
textture2
- 在频域下分析提取纹理特征的代码，希望对大家有用-In the frequency domain analysis of extracted texture features of the code, in the hope that useful
c
- 在综合描述声发射信号特点和小波殳换基本原理的基础上，结合实例介绍同时在时域 和频域具有局部分析能力的信号处理方法--小波变换在声发射信号的特征提取、时频分析和噪声去除等方面的应用。-Described in the integrated acoustic emission signal characteristics and the basic principles of wavelet Shu-for on the basis o
pinyu
- 用小波系数提取出音频的频域特征。比如lpc等特征。效果好！-Extracted using wavelet coefficients of the frequency-domain characteristics of the audio. Characteristics such as LPC. Good!
time_index1
- 刀具在线监测故障信号的时域频域时频域特征提取matlab程序 -Tool-line monitoring of fault signals in time domain frequency domain time-frequency domain feature extraction procedures matlab
Matlab
- 选择三个不同频段的信号对其进行频谱分析，根据信号的频谱特征设计三个不同的数字滤波器，将三路信号合成一路信号，分析合成信号的时域和频域特点，然后将合成信号分别通过设计好的三个数字滤波器，分离出原来的三路信号，分析得到的三路信号的时域波形和频谱，与原始信号进行比较，说明频分复用的特点。-Choice of three different signal-band spectral analysis carried out, according
时频域统计特征
- 信号的时频域统计特征，可用于后续模式识别,特征选择，特征提取。(The time-frequency statistics of the signal can be used for subsequent pattern recognition.)
inverse_st
- 广义S变换及其逆变换，用于对非平稳信号进行时频分析，研究信号的频域特征随时间的变化情况(The generalized S transform and its inverse transform are used to analyze the time-frequency of nonstationary signals and study the change of frequency domain characteristics w
voice_wav_frequency
- matlab语音信号分析时域频域，加窗，降噪滤波，端点检测，时域特征和频域特征提取(Matlab speech signal analysis in time domain, frequency domain, windowing, denoising, filtering, endpoint detection, time domain feature and frequency domain feature extraction.)
matlab
- 拉普拉斯特征映射,最大差异展开，时频域特征(Laplacian Eigenmap Maximum difference expansion Fast Maximum difference expansion ISOMAP)
matlab文件
- 利用小波变换、fft实现地震波的时域、频域特征的对比分析(Comparative analysis of seismic wave in time domain and frequency domain by wavelet transform and FFT)
time_frequency_analysis
- 基于实测信号，进行时频分析，同时了解时域频域特征(Based on the measured signal, time-frequency analysis is carried out, and time domain and frequency domain characteristics are also understood.)
特征提取
- matlab程序，用于提取脑电数据的五种频域特征指标数值(matlab code, Five Frequency Domain Characteristic Index Values for Extracting EEG Data)
振动信号时域频域特征（带测试数据）
- 针对信号的时域特征和频域特征提取，带测试数据，能够运行(According to the time-domain and frequency-domain feature extraction of signals, the system can run with test data.)
时域频域29个特征提取
- 利用matlab提取出频域和时域信号的29个特征(Using MATLAB to extract 29 features of frequency and time domain signals)
时域频域29个特征提取
- 利用matlab提取出频域和时域信号的29个特征，主运行文件feature_extraction，fre_statistical_compute和time_statistical_compute分别提取频域和时域的特征，生成的29个特征保存在生成的feature矩阵中。(Using MATLAB to extract 29 features of frequency-domain and time-domain signals, the
时域频域29个特征提取
- 时域频域29个特征提取，含有完整的MATLAB程序代码(29 feature extraction in time domain and frequency domain, including complete matlab program code)
时域特征和频域特征
- MATLAB的轴承故障时域特征和频域特征提取(Bearing fault time domain feature and frequency domain feature extraction)
cal_waveletfeature
- 计算小波包特征，小波分解得到能量比、小波熵。小波熵是一个统称，不是一种具体的熵算法。(The wavelet packet features are calculated, and the energy ratio and wavelet entropy are obtained by wavelet decomposition. Wavelet entropy is a general term, not a specific ent
肌电信号处理
- 表面肌电信号处理的matlab程序，包括带通滤波、50Hz陷波滤波程序，以及计算时域、频域的指标iMEG、RMS ， MF、MPF(The matlab program of sEMG signal processing includes band-pass filter, 50 Hz notch filter program, and calculation of time and frequency domain index IME