diff --git a/main.m b/main.m
index a6c7923..fcf9081 100644
--- a/main.m
+++ b/main.m
@@ -51,14 +51,14 @@ signal_2 = signal(end/2+1:end);
 %%%%%SPECTRAL ANALYSIS (RECTANGULAR WINDOW)%%%%%
 %plots power spectrum with rectangular window
 % 1st part of the signal with 1 Hz resolution
-frequencySpectrum(signal_1, fps, 1);
+frequencySpectrum(signal_1, fps, 1, RoI);
 % 1st part of the signal with 0.5 Hz resolution
-frequencySpectrum(signal_1, fps, 0.5);
+frequencySpectrum(signal_1, fps, 0.5, RoI);
 
 % 2nd part of the signal with 1 Hz resolution
-frequencySpectrum(signal_2, fps, 1);
+frequencySpectrum(signal_2, fps, 1, RoI);
 % 2nd part of the signal with 0.5 Hz resolution
-frequencySpectrum(signal_2, fps, 0.5);
+frequencySpectrum(signal_2, fps, 0.5, RoI);
 
 
 
@@ -66,15 +66,15 @@ frequencySpectrum(signal_2, fps, 0.5);
 %plots power spectrum with blackman window
 signal_1_win = blackmanWin(signal_1);
 % 1st part of the signal with 1 Hz resolution
-frequencySpectrum(signal_1_win, fps, 1);
+frequencySpectrum(signal_1_win, fps, 1, RoI);
 % 1st part of the signal with 0.5 Hz resolution
-frequencySpectrum(signal_1_win, fps, 0.5);
+frequencySpectrum(signal_1_win, fps, 0.5, RoI);
 
 signal_2_win = blackmanWin(signal_2);
 % 2nd part of the signal with 1 Hz resolution
-frequencySpectrum(signal_2_win, fps, 1);
+frequencySpectrum(signal_2_win, fps, 1, RoI);
 % 2nd part of the signal with 0.5 Hz resolution
-frequencySpectrum(signal_2_win, fps, 0.5);
+frequencySpectrum(signal_2_win, fps, 0.5, RoI);