made the script work with the provided assets.

unpublishedScripts/marketplace/audienceApplauseMeter/applauseOmeter.js

@@ -0,0 +1,84 @@
+//
+// Created by Alan-Michael Moody on 5/2/2017
+//
+
+(function () {
+    var pivotID, needleID;
+
+    this.preload = function (entityID) {
+
+        var children = Entities.getChildrenIDs(entityID);
+        var childZero = Entities.getEntityProperties(children[0]);
+        var childOne = Entities.getEntityProperties(children[1]);
+        var childZeroUserData = JSON.parse(Entities.getEntityProperties(children[0]).userData);
+
+        if (childZeroUserData.name === "pivot") {
+            pivotID = childZero.id;
+            needleID = childOne.id;
+        } else {
+            pivotID = childOne.id;
+            needleID = childZero.id;
+        }
+    };
+
+    var SCAN_RATE = 100; //ms
+    var REFERENCE_FRAME_COUNT = 30;
+    var MAX_AUDIO_THRESHOLD = 16000;
+
+    var framePool = [];
+
+    function scanEngine() {
+        var avatarLoudnessPool = [];
+
+        function average(a) {
+            var sum = 0;
+            var total = a.length;
+            for (var i = 0; i < total; i++) {
+                sum += a[i];
+            }
+            return Math.round(sum / total)
+        }
+
+        function audioClamp(input) {
+            if (input > MAX_AUDIO_THRESHOLD) return MAX_AUDIO_THRESHOLD;
+            return input;
+        }
+
+
+        var avatars = AvatarList.getAvatarIdentifiers();
+        avatars.forEach(function (id) {
+            var avatar = AvatarList.getAvatar(id);
+            avatarLoudnessPool.push(audioClamp(Math.round(avatar.audioLoudness)));
+
+        });
+
+
+        framePool.push(average(avatarLoudnessPool));
+        if (framePool.length >= REFERENCE_FRAME_COUNT) {
+            framePool.shift();
+        }
+
+        function normalizedAverage(a) {
+            a = a.map(function (v) {
+                return Math.round(( 100 / MAX_AUDIO_THRESHOLD ) * v);
+            });
+            return average(a);
+        }
+
+        var norm = normalizedAverage(framePool);
+
+        // we have a range of 55 to -53 degrees for the needle
+
+        var scaledDegrees = (norm / -.94) + 54.5; // shifting scale from 100 to 55 to -53 ish its more like -51 ;
+        Entities.editEntity(pivotID, {
+            localRotation: Quat.fromPitchYawRollDegrees(0, 0, scaledDegrees)
+        });
+
+
+    }
+
+    Script.setInterval(function () {
+        scanEngine();
+    }, SCAN_RATE);
+
+});

unpublishedScripts/marketplace/audienceApplauseMeter/rezApplauseOmeter.js

@@ -0,0 +1,43 @@
+//
+// Created by Alan-Michael Moody on 5/2/2017
+//
+
+'use strict';
+
+(function () {
+    var pos = Vec3.sum(MyAvatar.position, Quat.getFront(MyAvatar.orientation));
+
+    var meter = {
+        stand: {
+            type: 'Model',
+            modelURL: 'https://binaryrelay.com/files/public-docs/hifi/meter/applauseOmeterTextured.fbx',
+            lifetime: '3600',
+            script: 'https://binaryrelay.com/files/public-docs/hifi/meter/applauseOmeter.js',
+            position: Vec3.sum(pos, {x: 0, y: 2.0, z: 0})
+        },
+        pivot:{
+            type:'Sphere',
+            parentID: '',
+            userData: '{"name":"pivot"}',
+            dimensions: {x: .05, y: .05, z: .05},
+            lifetime: '3600',
+            position: Vec3.sum(pos, {x: 0, y: 3.385, z: 0.2})
+        },
+        needle: {
+            type: 'Model',
+            modelURL:'https://binaryrelay.com/files/public-docs/hifi/meter/applauseOmeterNeedleTextured.fbx',
+            parentID: '',
+            userData: '{"name":"needle"}',
+            dimensions: {x: .286, y: 1.12, z: .07},
+            lifetime: '3600',
+            position: Vec3.sum(pos, {x: 0, y: 3.85, z: 0.2})
+        }
+    };
+
+
+    meter.pivot.parentID = Entities.addEntity(meter.stand);
+    meter.needle.parentID = Entities.addEntity(meter.pivot);
+    Entities.addEntity(meter.needle);
+
+
+})();