sampling
显示 更早的评论
Hello to everyone,
I want to draw a period of y=sin(x) function and take 10 samples with the same interval among them. Next, to each sample I want to add a random value of noise, which value must come from the Gaussian distribution N(0,1).Could someone help me?
Thanks in advance
采纳的回答
更多回答(2 个)
See the following code. By selecting Fs and duration, you can obtain required number of samples.
T=10; % Duration of signal (sec)
f=1; % Frequencey of sine (Hz)
Fs=20; % sampling frequency
sigma=0.1; % std of noise
N=T*Fs; % Number of samples
n=0:N-1; % sample indeces
x=sin(2*pi*f*n/Fs); % samples of sine
noise=sigma*randn(1,N); % adding noise
y=x+noise;
plot(n/Fs,y,'-*r',n/Fs,x,'-g');
legend('noisy','original')
xlabel('Time in sec')
类别
在 帮助中心 和 File Exchange 中查找有关 Descriptive Statistics 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
