clear; clc;        % clear Workspace
N  = 5; V = 40;    % period, sampling
mu = 0; sigma = 1; % normal distribution
C  = sqrt(2*pi); om0 = pi; % signal
t  = linspace(0, N*1, N*V);
s_t = C*sin(2*om0*t) + (mu + sigma*randn(1, N*V));
plot(t, s_t);