diff --git a/HISTORY.md b/HISTORY.md
index bdf8fb5c..99463ab1 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -54,6 +54,7 @@
 * new "text costumes" library for generating costumes from letters or words of text
 * took out "b block" costume from catalog
 * added microphone "resolution" concept governing "bins" (buffer / bin sizes)
+* added microphone "resolution" settings to GUI
 
 ### 2019-03-10
 * Objects, Blocks, Threads: added microphone note and pitch detection
diff --git a/snap.html b/snap.html
index 0981b360..fd98040e 100755
--- a/snap.html
+++ b/snap.html
@@ -9,7 +9,7 @@
         <script type="text/javascript" src="src/blocks.js?version=2019-03-11"></script>
         <script type="text/javascript" src="src/threads.js?version=2019-03-11"></script>
         <script type="text/javascript" src="src/objects.js?version=2019-03-11"></script>
-        <script type="text/javascript" src="src/gui.js?version=2019-03-06"></script>
+        <script type="text/javascript" src="src/gui.js?version=2019-03-11"></script>
         <script type="text/javascript" src="src/paint.js?version=2019-02-22"></script>
         <script type="text/javascript" src="src/lists.js?version=2019-02-07"></script>
         <script type="text/javascript" src="src/byob.js?version=2019-02-15"></script>
diff --git a/src/gui.js b/src/gui.js
index 14441630..a442a6e2 100644
--- a/src/gui.js
+++ b/src/gui.js
@@ -75,7 +75,7 @@ isRetinaSupported, SliderMorph, Animation, BoxMorph, MediaRecorder*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2019-March-06';
+modules.gui = '2019-March-11';
 
 // Declarations
 
@@ -2773,12 +2773,10 @@ IDE_Morph.prototype.settingsMenu = function () {
             new Color(100, 0, 0)
         );
     }
-    if (stage.microphone.isReady) {
-        menu.addItem(
-            '\u2611 ' + localize('Microphone'),
-            function () {stage.microphone.stop(); }
-        );
-    }
+    menu.addItem(
+        'Microphone resolution...',
+        'microphoneMenu'
+    );
     menu.addLine();
     /*
     addPreference(
@@ -5123,6 +5121,34 @@ IDE_Morph.prototype.saveProjectsBrowser = function () {
     new ProjectDialogMorph(this, 'save').popUp();
 };
 
+// IDE_Morph microphone settings
+
+IDE_Morph.prototype.microphoneMenu = function () {
+    var menu = new MenuMorph(this),
+        world = this.world(),
+        pos = this.controlBar.settingsButton.bottomLeft(),
+        resolutions = ['low', 'normal', 'high', 'max'],
+        microphone = this.stage.microphone;
+
+    if (microphone.isReady) {
+        menu.addItem(
+            '\u2611 ' + localize('Microphone on'),
+            function () {microphone.stop(); }
+        );
+        menu.addLine();
+    }
+    resolutions.forEach(function (res, i) {
+        menu.addItem(
+            (microphone.resolution === i + 1 ? '\u2713 ' : '    ') +
+                res,
+            function () {
+                microphone.setResolution(i + 1);
+            }
+        );
+    });
+    menu.popup(world, pos);
+};
+
 // IDE_Morph localization
 
 IDE_Morph.prototype.languageMenu = function () {