diff --git a/generateStim_HugginsPitch/huggins_3AFC.m b/generateStim_HugginsPitch/huggins_3AFC.m
index ee213f4..38c54f6 100644
--- a/generateStim_HugginsPitch/huggins_3AFC.m
+++ b/generateStim_HugginsPitch/huggins_3AFC.m
@@ -46,7 +46,11 @@
 
 %% Make an pure noise example to calibrate sound level
 fname = 'HugginsPitch_calibration.flac';
-signal = makeNoise(10,SampFreq);
+signal = [];
+for i = 1:5 %5 intervals of sound
+    sig = makeNoise(burstLength,SampFreq);%Make noise burst
+    signal = [signal;sig;zeros(SampFreq*intervalLength,2)];
+end
 audiowrite([path_out fname], signal, SampFreq);
 
 %% Make an example with the tone present in the 2nd noise
@@ -93,4 +97,4 @@
         
     end
 end
-fprintf('+++ Special note from Sijia: If you saw a warning saying "Warning: Data clipped when writing file.". Ignore it, not a problem here. +++\n');
\ No newline at end of file
+fprintf('+++ Special note from Sijia: If you saw a warning saying "Warning: Data clipped when writing file.". Ignore it, not a problem here. +++\n');