spatialized vibration sound, see #284

js/moleculesandlight/view/MoleculesAndLightScreenView.js

@@ -44,6 +44,7 @@ import rotationCounterclockwiseSoundInfo from '../../../sounds/rotate-counterclo
 import rotationDirections001SoundInfo from '../../../sounds/rotate-directions-001-spatialized_mp3.js';
 import rotationDirections002SoundInfo from '../../../sounds/rotate-directions-002-spatialized_mp3.js';
 import vibrationSoundInfo from '../../../sounds/vibration_mp3.js';
+import vibrationSpatializedSoundInfo from '../../../sounds/vibration-spatialized_mp3.js';
 import MALConstants from '../../common/MALConstants.js';
 import MoleculesAndLightA11yStrings from '../../common/MoleculesAndLightA11yStrings.js';
 import moleculesAndLightStrings from '../../molecules-and-light-strings.js';
@@ -311,7 +312,8 @@ function MoleculesAndLightScreenView( photonAbsorptionModel, tandem ) {
   };
 
   // molecule vibration sound
-  const moleculeVibrationLoop = new SoundClip( vibrationSoundInfo, {
+  const moleculeVibrationSoundInfo = MALConstants.USE_SPATIALIZED_SOUNDS ? vibrationSpatializedSoundInfo : vibrationSoundInfo;
+  const moleculeVibrationLoop = new SoundClip( moleculeVibrationSoundInfo, {
     initialOutputLevel: 0.4,
     loop: true,
     enableControlProperties: [ photonAbsorptionModel.runningProperty ]

sounds/license.json

@@ -126,5 +126,13 @@
     "projectURL": "http://phet.colorado.edu",
     "license": "contact [email protected]",
     "notes": "created by Ashton Morris (PhET Interactive Simulations)"
+  },
+  "vibration-spatialized.mp3": {
+    "text": [
+      "Copyright 2020 University of Colorado Boulder"
+    ],
+    "projectURL": "http://phet.colorado.edu",
+    "license": "contact [email protected]",
+    "notes": "created by Ashton Morris (PhET Interactive Simulations)"
   }
 }