diff --git a/+pds/+eyelink/calibrate.m b/+pds/+eyelink/calibrate.m
index a8d65ae..9c1b70a 100755
--- a/+pds/+eyelink/calibrate.m
+++ b/+pds/+eyelink/calibrate.m
@@ -14,7 +14,6 @@
 %                 Added .trialSetup of reward structures to prevent error (via pds.behavior.reward.trialSetup)
 % 
        
-
 if ~isfield(p.trial.eyelink, 'fixdotW')
     p.trial.eyelink.fixdotW = ceil(0.2 * p.trial.display.ppd);
 end
@@ -24,10 +23,14 @@
     pds.behavior.reward.trialSetup(p);
 end
 
+
 commandwindow;
-if p.trial.sound.use
-    Beeper
-end
+
+
+%if p.trial.sound.use
+%    Beeper
+%end
+
 disp('*************************************')
 disp('Beginning Eyelink Toolbox Calibration')
 disp('*************************************')
diff --git a/+pds/+sound/stop.m b/+pds/+sound/stop.m
index 4591a48..73eed7e 100644
--- a/+pds/+sound/stop.m
+++ b/+pds/+sound/stop.m
@@ -1,16 +1,32 @@
 function stop(p, sound_name)
 % funtion pds.sound.stop(p, sound_name)
-% 
+%
 % Stop the sound associated with sound_name.
 %   - No arguments out
 %
 % 2020-01-16  TBC  Migrated to pds.sound (from pds.audio) to be consistent with field name
-% 
-%  Virtual device handle
-[~,name] = fileparts(p.trial.sound.wavfiles.(sound_name));
-pahandle = p.trial.sound.(name);
+% 2022-02-25  LPL (ll2833@columbia.edu) added functionality to deactivate
+% all sounds if function called with one input argument.
+%
 
-%  Stop the requested sound
-PsychPortAudio('Stop',pahandle);
+if(nargin==1)
+    fields = fieldnames(p.trial.sound.wavfiles);
+    for i=1:numel(fields)
+        [~,name] = fileparts(p.trial.sound.wavfiles.(fields{i}));
+        pahandle = p.trial.sound.(name);
+        status = PsychPortAudio('getStatus',pahandle);
+        if(status.Active~=0)
+            PsychPortAudio('Stop',pahandle);
+        end
+    end
+else
+    
+    %  Virtual device handle
+    [~,name] = fileparts(p.trial.sound.wavfiles.(sound_name));
+    pahandle = p.trial.sound.(name);
+    
+    %  Stop the requested sound
+    PsychPortAudio('Stop',pahandle);
 end
 
+end
\ No newline at end of file