diff --git a/Virtual Sensing/Remote Microphone Technique/MATLAB/Functions/obsFiltTd.m b/Virtual Sensing/Remote Microphone Technique/MATLAB/Functions/obsFiltTd.m
index b8744afab0b8d630a7104333b309ca109ed95119..785bfe5fc84717a584885c2490225108f22b7353 100644
--- a/Virtual Sensing/Remote Microphone Technique/MATLAB/Functions/obsFiltTd.m	
+++ b/Virtual Sensing/Remote Microphone Technique/MATLAB/Functions/obsFiltTd.m	
@@ -238,7 +238,7 @@ function [O, Rme, Rmm, Ovec, RmeMtx, RmmMtx, condNum, mMtx, Omean, RmeMean, RmmM
             tmp = m(:, mIdx, jIdx);
 
             % Calculate the cross-correlations between virtual and monitoring microphones
-            for eIdx = 1:size(e, 2)
+            for eIdx = size(e, 2):-1:1
                 corr = xcorr(tmp, e(:, eIdx, jIdx), filtLen);
 
                 Rme(:, mIdx, eIdx, jIdx) = corr(filtLen + 1:-1:2);