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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.
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
chengxu3
- 用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图 2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选 3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图
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
lfm_compression
- SAR线性调频信号脉冲压缩仿真，包括时域加窗对脉压厚信号旁瓣的影响！-SAR chirp signal pulse compression simulation, including the time-domain windowing of the signal pulse pressure thick sidelobe impact!
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-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.
zantaixinhaojiance
- 采用小波分解时域信号，通过多层分解，根据小波系数检测原信号中的暂态信号-Time-domain signal using wavelet decomposition, through multi-layer decomposition, the wavelet coefficients of the original signal in the detection of transient signals
xinhao
- 信号的课程设计是个很好的处理信号的方法 时域和频域都有-this is a information for us student ，please download it thank you very much will you do it
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.
five
- 计算声发射时域信号特征值：裕值，振幅因子FK、fc，峭度，-Calculation of acoustic emission time-domain signal characteristic values: margin value, the amplitude factor FK, fc, kurtosis,
time-domain-convolution-theorem
- 该程序为数字信号处理实验中的时域卷积定理。-Digital signal processing experimental time domain convolution theorem
OFDM
- OFDM完美出图，信噪比，16QAM星座图，加窗信号时域和频域波形图-Perfect figure, OFDM SNR, 16 qam constellation diagram, add window signal time domain and frequency domain waveform figure
LVBOQI-SHEJI1
- 录制一段自己的语音信号，并对录制的信号进行采样；画出采样后语音信号的时域波形和频谱图；通过matlab界面进行编程设计，界面方便人们操作- Their record a voice signal, and recording the signal is sampled draw sample after the time-domain waveform and frequency spectrum of the speech signal designed by matlab progr
The-Fourier-transform
- 将时域信号分解为不同频率的正弦信号或余弦函数叠加之和。连续情况下要求原始信号在一个周期内满足绝对可积条件。-The time-domain signal into different frequency sine or cosine function signal superimposed sum. Required to meet the continuous case the original signal is absolutely integrable conditions in a s
filter1
- GUI，一个数字信号通过低通滤波器，可显示原信号、滤波器、目标信号的时域频域波形。-GUI, a digital signal through a low-pass filter, the original signal can be displayed, the filter, the time-domain target signal in the frequency domain waveform.
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.)