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matlab语言编写的小波变换的程序
- 这是一个用matlab语言编写的小波变换的程序,是时频分析的一种,可以在时域和频域内对信号进行分析。-using Matlab language of the wavelet transform procedure is time-frequency analysis of a kind in the time domain and frequency domain analysis of the signal.
2005126142643
- 一套关于时域分析的matlab,带详细注释-set of time-domain analysis of Matlab, with detailed explanatory note
DFT进行频谱分析时的三种现象
- DFT进行频谱分析时的三种现象 1、混叠:对连续信号采样,要求连续信号是带限的,采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏:DFT对时域信号进行了截断(相当于采样信号乘了一个窗函数),时域的乘积相当于频域卷积,改变了原信号频谱。 改用其他窗函数(非矩形)改善泄漏。 3、栅栏现象:DFT 只给出了频谱在采样点上的取值,采样点间的频谱内容丢失。-DFT spectrum analysis of a
main
- 信号、系统及系统响应:[1]:时域采样序列分析[2]:系统和响应分析[3]:卷积定理验证
FIR
- 数字信号处理基于matlab 文件内容 /conv(卷积部分) dupconv 重叠保留法 freqcirconv 频域圆周卷积 freqconv 频域卷积 timecirconv 时域圆周卷积 timeconv 时域卷积 /fft(频域分析部分) d2fft 基2FFT dft DFT最简化程序 dtft DTFT演示 /fir(fir滤波器设计) fir 得到fir滤波器hn getwindow 得到fir
CWsinal
- matlab绘制CW信号的时域波形,同时对信号进行频谱分析,并考察采样频率以及信噪比对频谱分析的影响。-matlab draw CW signal time-domain waveform, and spectral analysis of signals and the sampling frequency and signal to noise ratio study of the impact of spectrum analysis.
LPM
- 用matlab绘制线性调频信号的时域波形,同时对信号进行频谱分析,并考察采样频率以及信噪比对频谱分析的影响。-Matlab drawing with linear frequency modulation signal time-domain waveform, and spectral analysis of signals and the sampling frequency and signal to noise ratio study of the impact of spectrum
neurospec20
- 非常全面的生物信号分析工具包,能够详细分析信号时域频域、相位等特性,针对于生物信号有良好效果。-an excellent signal processing toolbox, it could give a detailed analysis on time series, frequency and phase. it is really useful on biomedical signal processing.
fft-source
- 快速傅立叶变换(时域抽取基二fft)的源码的分析-Fast Fourier Transform (time-domain extraction base 2 fft) analysis of the source code
shipinfenxi
- 对于生成的波形进行时频分析,显示出波形时频两域的三维图像-The waveform for generating time-frequency analysis, waveform display two time-frequency domain three-dimensional image
fft-filter
- 该程序为傅立叶变换,用来将时域信号进行频域信号分析,保护功率谱、能量谱等。-The program for the Fourier transform, time-domain signal to the frequency domain signal analysis, to protect the power spectrum, the energy spectrum.
FLch6eg1
- 小波算法,在计算式,通过图像对其进行分析估计,可以直观的看到它对函数的时域和频域的改变-Wavelet algorithm, calculation, estimated by image analysis of them, you can visually see that it functions in time domain and frequency domain changes using the compression miu worth PSO
feliyebianhuan
- 傅里叶变换,对于不好处理的时域的信号可以用它转换成频域来分析,是个有用的函数模块。-Fourier transform, the processing time domain to bad signal can use it converted to frequency domain analysis, is a useful function module.
background-model8
- :基于背景建模的运动目标分割是智能视频监控的重要任务,模型的质量直接影响到检测、跟踪、识别等运动分析的准确性.当前的建模方法多是单层的,忽略了像素特征在时域和空域上的联系,模型描述不够准确,对于背景扰动、全局光照变化及复杂的室内外场景等多种情况鲁棒性不强,导致了分割中出现空洞和噪声点.针对这些问题提出了一种双层建模的方法,在第一层提取时域上的像素亮度特征采用码本建模,第二层提取邻域纹理特征采用基于中心对称的局部二值模式建模.实验证明该方法在用于运动分割时,比常用方法具有更好的准确性和鲁棒性.-M
2
- 离散时间系统的时域分析的一些源代码,含有例题解析-Time domain analysis of discrete-time systems some of the source code, containing examples resolved
liewenchilun
- 此Matlab程序是用于齿轮故障检测,其中包含时域和频域分析等。-This is a Matlab program for the detection gear failure, which includes the time domain and frequency domain analysis.
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- 通过自动控制原理虚拟实验平台实现线型系统的时域分析、线性系统的根轨迹分析、线型系统(Through the automatic control principle, the virtual experiment platform can realize the time domain analysis of linear system, the root locus analysis of linear system and the linear system)
matlab小波分解时频分析
- 传统的傅立叶变化只能分析时域、频域图,而小波变化能进行时频分析,对信号进行更好的处理。(The traditional Fourier transform can only analyze the time domain and frequency domain diagram, while the wavelet transform can carry on the time-frequency analysis and better deal with the signal.)
pkft
- 一套关于时域分析的matlab,带详细注释,不错的源码 很好(A set of time domain analysis of matlab, with detailed notes, a good source is very good)
cundidatebladk
- 基于matlab实现OFDM系统 包括信号时域频域仿真 误码率分析(Based on matlab realize simulation of OFDM system, including signal time domain and frequency domain analysis of bit error rate)