added main.m and unknownsignal.csv

main.m

@@ -0,0 +1,18 @@
+%%%%%%%%%%%%%%%%%%
+%Signal Processing exam
+%
+% Task: process and analyse an unknown signal "unknownsignal.csv"
+%
+% Traglia Nicolas
+% nicolas.traglia@ecam.fr
+%20/04/2023
+%%%%%%%%%%%%%%%%%%
+clc;
+clear;
+
+SignalRaw = csvread("unknownsignal.csv"); #The signal to process
+
+plot(1:length(SignalRaw), SignalRaw); #Plot raw signal
+title('Raw unknown signal');
+xlabel('Time (s)');
+ylabel('Amplitude (a.u.)');