MATLAB中FFT的使用方法 是德科技 Keysight Technologies 已认证机构号 来自专栏 · 模拟IC设计实践 22 人赞同了该文章 The examples provided in the documentation of following MATLAB Script function might use functions that are not a
This MATLAB function computes the discrete Fourier transform (DFT) of X using a fast Fourier transform (FFT) algorithm.
example Y = fft(X,n) returns the n-point DFT. If X is a vector and the length of X is less than n, then X is padded with trailing zeros to length n. If X is a vector and the length of X is greater than n, then X is truncated to length n. If X is a matrix, then eac...
The examples provided in the documentation of following MATLAB Script function might use functions tha...
X = S; % plot(1000*t(1:50),S(1:50)) % title('Signal Corrupted with Zero-Mean Random Noise') % xlabel('t (milliseconds)') % ylabel('X(t)'); Y = fft(X); % Compute the two-sided spectrum P2. Then compute the single-sided spectrum P1 based % on P2 and the even-va...
方法/步骤 1 读入时域采集信号，定义采样频率，计算信号点数量，生成采样时间点clear;clc;close allload('example')Fs=2500;T=1/Fs;N=length(y);t=(0:1:N-1)*T;t=t';2 绘制时域信号图形figureplot(t,y)3 使用MATLAB自带的fft函数，对信号做傅里叶变换，注意：频谱的前半部分为有效谱...
幅值不受影响,但实部或虚部的值,会出现0的情况==>看MATLAB中FFT的频谱,应该看幅值 绘制半谱图(幅值的)后--我们发现-幅值-相位-频率---均和时域对应不上。 ==>进行幅值-修正 五、进行幅值-修正--并绘制图形 + View Code 放大后可以看到,此时,幅值-频率都和时域一致 ...
MATLAB Online에서 열기 Hello, I have a system of differential equations and I apply a sinusoidal perturbation in current to get the output voltage. Finally, I want to calculate the impedance values and draw the nyquist plot. I started with a simple example of RC circuit and solve ...
Example: n = 2^nextpow2(size(X,1)) Data Types: double | single | int8 | int16 | int32 | uint8 | uint16 | uint32 | logical dim— Dimension to operate along positive integer scalar Dimension to operate along, specified as a positive integer scalar. If you do not specify the dimen...
2、MATLAB中FFT的频谱,应该看幅值 3、X轴频率点的设置:采样频率为Fs,频谱图显示的最高频率为Fs/2(采样定理) :X轴频率点:(0:1:N/2)*Fs/N 4、复数幅值修正 5、 /***/ /***/ /***/ 栗子及实践部分 一、信号 1 2 3 4 5