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用matlab中的FFT函数实现了正弦信号
- 用matlab中的FFT函数实现了正弦信号,矩形信号,和白噪声的频谱分析,FFT with matlab function in a sinusoidal signal, the rectangular signal, and white noise spectrum analysis
使用matlab对正弦信号采样
- 使用matlab对正弦信号采样 以及对其进行DFT变换,Matlab sinusoidal signal on the use of sampling, as well as its DFT transform
MATLABprograminfft.用Matlab产生正弦波,矩形波
- 1.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 ,1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their
esprit.rar
- 用esprit算法估计复正弦加白噪声的信号频率,f给出正弦信号的频率估计值,Esprit algorithm with an estimated increase in complex white noise sinusoidal signal frequency, f the frequency of sinusoidal signal given the estimated value of
MVDR.rar
- 三个复正弦信号的信噪比分别为SNR1 =30dB, SNR2 =30dB和SNR3 = 27dB。假设信号样本数为1000,FIR 滤波器的抽头个数为4。基于奇异值分解的MVDR 方法进行信号频率估计的仿真实验,获得功率谱密度函数的估计。,A power spectrum estimation algorithm named mvdr is introduced in this program
Matlab-FinishedOne
- 针对夹杂有白噪声的正弦信号的功率谱估计仿真-Mixed with white noise for sinusoidal signal simulation of the power spectrum estimation
MATLAB
- 对噪声信号中的正弦信号,通过Pisarenko谐波分解方法、Music算法和Esprit算法进行频率估计,信号源是: 其中, , , ; 是高斯白噪声,方差为 。使用128个数据样本进行估计。 1、用三种算法进行频率估计,独立运行20次,记录各个方法的估计值,计算均值和方差; 2、增加噪声功率,观察和分析各种方法的性能。-Sinusoidal signal in the noise signal through the Pisarenko harmonic decomposition metho
ffs
- 在matlab环境下仿真随机信号,括号内为内容(正弦信号、白噪声信号、正弦信号附加白噪声三种信号形式) 的代码,计算该随机信号的相关函数和功率谱-In the matlab simulation environment, random signals, the contents of brackets (sinusoidal signal, white noise signal, sine wave signal form of three additional white noise
levinsonf
- 信号为两个正弦信号加高斯白噪声,用levinson递推法进行功率谱估计。-Signal for two sinusoidal signal plus Gaussian white noise, with levinson recursive power spectrum estimation method.
RLS
- 递归最小二乘滤波器算法,包含对于单频正弦信号和实际语音信号的处理结果-Recursive least squares filter algorithm, that contains the single-frequency sinusoidal signal and the actual voice signal processing results
filter-deniose
- matlab下实现降噪,功率谱计算。%程序中设定采样点数为256个,采样频率为10000hz, %输入信号为随机噪声和两个正弦的合成信号 %设定的滤波器的截止频率为3500hz %通过挈比雪肤滤波器,运行程序,比较滤波前后的频域波形 %滤波去除了高频信号-matlab achieve noise reduction, power spectrum calculation. Sampling procedure set for 256 points, the sampling f
FFTshow
- 可产生矩形脉冲和正弦信号,矩形脉冲的脉宽可以改变,正弦信号则可以改变频率和时宽-Can produce rectangular pulse and sinusoidal signal, the rectangular pulse width can be changed, sinusoidal signal can be changed when the frequency and width
PIDSimulation
- 针对离散系统的阶跃信号、正弦信号和方波信号,设计离散PID-Step for the discrete-time systems signal, sinusoidal signal and the square wave signal, the design of discrete PID
Sinusoidalsignalisgenerated
- 生成正弦信号生成三角波信号一维小波分解重构第1-7层逼近系数-Sinusoidal signal is generated triangular wave signal is generated one-dimensional wavelet reconstruction of the first level approximation coefficient of 1-7
Matlab
- (转载,供matlab新手学习用)简单信号的频谱分析,非常经典。包括正弦信号,矩形波,白噪声三类信号的频谱分析,很详细,代码有注解。- frequency analysis of signal using Matlab
wavelet-signal
- 利用小波变换对有噪正弦信号进行去噪,来实现信号优化-Wavelet transform denoising of noisy sinusoidal signals to achieve optimal signal
pisa
- 在计算机上产生一组实验数据,首先产生一段零均值白噪声数据u(n),令功率为 ,让u(n)通过一个三阶FIR: 得到y(n). .y(n)上加三个实正弦信号f1’=0.1,f2’=0.25,f3’=0.26调整 和正弦信号幅度信噪比大致为10dB,50dB,50dB. (1) 令N=256,描绘xn波形; (2)得出真实功率谱密度 . (3) 利用此实验数据Pisarenko谐波分解法估计该实验数据的正弦频率及幅度。-On the computer to generate a
MATLAB
- 自适应信号 利用自适应信号分离器,可以有效的从白噪声中提取周期信号。现选取信号为正弦信号 ,宽带噪声信号为高斯白噪声,延迟D=50;收敛因子为 和 时的滤波效果。-Adaptive signal using adaptive signal separator, white noise can be effectively extracted from the periodic signal. Select the signal is sinusoidal signal, broadband no
lab1
- MATLAB编程 课程实验1:正弦信号的相关积累检测 -MATLAB
提取周期信号
- 用于信号的周期成分提取,使用的最小二乘方法,拟合出一个单频的正弦信号。(For the extraction of periodic components of signals, the least square method is used to fit a sinusoidal signal of a single frequency.)