diff --git a/scripts/tutorials/halfDuplex.js b/scripts/tutorials/halfDuplex.js
new file mode 100644
index 0000000000..fe608eedec
--- /dev/null
+++ b/scripts/tutorials/halfDuplex.js
@@ -0,0 +1,68 @@
+//  halfDuplex.js
+//
+//  Created by Philip Rosedale on April 21, 2017
+//  Copyright 2016 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+//  This client script reduces echo by muting the microphone when others nearby are speaking, 
+//  allowing the use of live microphones and speakers.
+//  NOTE:  This will only work where there are no injectors playing sound effects, 
+//  since those will not be muted and will cause feedback.  
+// 
+//  IMPORTANT:  If you use multiple source microphones, you must give the microphone avatars 
+//  the display name 'Microphone' (or change the string below), to prevent feedback.  This script
+//  will mute the other so-named avatars, so that you can have speakers connected to those same 
+//  avatars and in the same room.  
+//
+
+var averageLoudness = 0.0; 
+var AVERAGING_TIME = 0.9;
+var LOUDNESS_THRESHOLD = 100;
+var HYSTERESIS_GAP = 1.41;          //  3db gap
+var MICROPHONE_DISPLAY_NAME = "Microphone";
+
+var debug = false; 
+var isMuted = false;  
+
+Script.update.connect(function () {
+    //  
+    //  Check for other people's audio levels, mute if anyone is talking.  
+    //
+    var othersLoudness = 0;
+    var avatars = AvatarList.getAvatarIdentifiers();
+    avatars.forEach(function (id) {
+        var avatar = AvatarList.getAvatar(id);
+        if ((MyAvatar.sessionUUID !== avatar.sessionUUID) && (avatar.displayName.indexOf(MICROPHONE_DISPLAY_NAME) !== 0)) {
+            othersLoudness += Math.round(avatar.audioLoudness); 
+        }
+        //  Mute other microphone avatars to not feedback with muti-source environment
+        if (avatar.displayName.indexOf(MICROPHONE_DISPLAY_NAME) === 0) {
+            if (!Users.getPersonalMuteStatus(avatar.sessionUUID)) {
+                Users.personalMute(avatar.sessionUUID, true);
+            }
+        }
+    });
+
+    averageLoudness = AVERAGING_TIME * averageLoudness + (1.0 - AVERAGING_TIME) * othersLoudness;
+
+    if (!isMuted && (averageLoudness > LOUDNESS_THRESHOLD * HYSTERESIS_GAP)) {
+        if (debug) { 
+            print("Muted!"); 
+        }
+        isMuted = true;
+        if (!AudioDevice.getMuted()) {
+            AudioDevice.toggleMute();
+        }
+    } else if (isMuted && (averageLoudness < LOUDNESS_THRESHOLD)) {
+        if (debug) { 
+            print("UnMuted!"); 
+        }
+        isMuted = false;
+        if (AudioDevice.getMuted()) {
+            AudioDevice.toggleMute();
+        }
+    }
+});
+