diff --git a/app/src/Room.js b/app/src/Room.js
index 9052170..35c79dd 100644
--- a/app/src/Room.js
+++ b/app/src/Room.js
@@ -9,6 +9,7 @@ module.exports = class Room {
         this.id = room_id;
         this.worker = worker;
         this.router = null;
+        this.audioLevelObserver = null;
         this.io = io;
         this._isLocked = false;
         this._roomPassword = null;
@@ -29,10 +30,49 @@ module.exports = class Room {
             .then(
                 function (router) {
                     this.router = router;
+                    this.startAudioLevelObservation(router);
                 }.bind(this),
             );
     }
 
+    // ####################################################
+    // PRODUCER AUDIO LEVEL OBSERVER
+    // ####################################################
+
+    async startAudioLevelObservation(router) {
+        log.debug('Start audioLevelObserver for signaling active speaker...');
+
+        this.audioLevelObserver = await router.createAudioLevelObserver({
+            maxEntries: 1,
+            threshold: -80,
+            interval: 800,
+        });
+
+        this.audioLevelObserver.on('volumes', (volumes) => {
+            const volume = volumes[0].volume;
+            let audioVolume = Math.round(Math.pow(10, volume / 85) * 10); // 1-10
+            if (audioVolume > 2) {
+                //console.log('PEERS', this.peers);
+                this.peers.forEach((peer) => {
+                    peer.producers.forEach((producer) => {
+                        if (producer.kind == 'audio') {
+                            let data = { peer_id: peer.id, audioVolume: audioVolume };
+                            //log.debug('audioLevelObserver', data);
+                            this.io.emit('audioVolume', data);
+                        }
+                    });
+                });
+            }
+        });
+        this.audioLevelObserver.on('silence', () => {
+            log.debug('audioLevelObserver', { volume: 'silence' });
+        });
+    }
+
+    addProducerToAudioLevelObserver(producer) {
+        this.audioLevelObserver.addProducer(producer);
+    }
+
     getRtpCapabilities() {
         return this.router.rtpCapabilities;
     }
diff --git a/app/src/Server.js b/app/src/Server.js
index fa0900a..3e30779 100644
--- a/app/src/Server.js
+++ b/app/src/Server.js
@@ -479,9 +479,15 @@ io.on('connection', (socket) => {
         log.debug('Produce', {
             kind: kind,
             peer_name: peer_name,
+            peer_id: socket.id,
             producer_id: producer_id,
         });
 
+        // add & monitor producer audio level
+        if (kind === 'audio') {
+            roomList.get(socket.room_id).addProducerToAudioLevelObserver({ producerId: producer_id });
+        }
+
         // peer_info audio Or video ON
         let data = {
             peer_name: peer_name,
diff --git a/public/css/Room.css b/public/css/Room.css
index 15b8cf3..864fd3a 100644
--- a/public/css/Room.css
+++ b/public/css/Room.css
@@ -735,6 +735,31 @@ progress {
     padding: 0;
 }
 
+/*--------------------------------------------------------------
+# Speech bar
+--------------------------------------------------------------*/
+
+.speechbar {
+    position: absolute;
+    top: 0;
+    bottom: 0;
+    right: 2px;
+    width: 10px;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    pointer-events: none;
+}
+
+.bar {
+    width: 6px;
+    border-radius: 6px;
+    background: rgba(#19bb5c, 0.65);
+    transition-property: height background-color;
+    transition-duration: 0.25s;
+}
+
 /*--------------------------------------------------------------
 # Pulse class effect
 --------------------------------------------------------------*/
diff --git a/public/css/VideoGrid.css b/public/css/VideoGrid.css
index 88d69a7..05ce1a9 100644
--- a/public/css/VideoGrid.css
+++ b/public/css/VideoGrid.css
@@ -17,8 +17,7 @@
     right: 0px;
 }
 
-#videoMediaContainer div {
-    /* Camera */
+.Camera {
     position: relative;
     vertical-align: middle;
     align-self: center;
diff --git a/public/js/RoomClient.js b/public/js/RoomClient.js
index c246a5b..1272311 100644
--- a/public/js/RoomClient.js
+++ b/public/js/RoomClient.js
@@ -133,6 +133,9 @@ class RoomClient {
         this.myVideoEl = null;
         this.debug = false;
 
+        this.videoProducerId = null;
+        this.audioProducerId = null;
+
         this.consumers = new Map();
         this.producers = new Map();
         this.producerLabel = new Map();
@@ -513,6 +516,13 @@ class RoomClient {
             }.bind(this),
         );
 
+        this.socket.on(
+            'audioVolume',
+            function (data) {
+                this.handleAudioVolume(data);
+            }.bind(this),
+        );
+
         this.socket.on(
             'disconnect',
             function () {
@@ -599,7 +609,7 @@ class RoomClient {
             }
             producer = await this.producerTransport.produce(params);
 
-            console.log('Producer id', producer.id);
+            console.log('PRODUCER', producer);
 
             this.producers.set(producer.id, producer);
 
@@ -607,8 +617,10 @@ class RoomClient {
             if (!audio) {
                 this.localVideoStream = stream;
                 elem = await this.handleProducer(producer.id, type, stream);
+                this.videoProducerId = producer.id;
             } else {
                 this.localAudioStream = stream;
+                this.audioProducerId = producer.id;
             }
 
             producer.on('trackended', () => {
@@ -749,7 +761,7 @@ class RoomClient {
     }
 
     async handleProducer(id, type, stream) {
-        let elem, d, p, i, b, fs;
+        let elem, d, p, i, b, fs, pm, pb;
         this.removeVideoOff(this.peer_id);
         d = document.createElement('div');
         d.className = 'Camera';
@@ -773,11 +785,20 @@ class RoomClient {
         fs = document.createElement('button');
         fs.id = id + '__fullScreen';
         fs.className = html.fullScreen;
+        pm = document.createElement('div');
+        pb = document.createElement('div');
+        pm.setAttribute('id', this.peer_id + '_pitchMeter');
+        pb.setAttribute('id', this.peer_id + '_pitchBar');
+        pm.className = 'speechbar';
+        pb.className = 'bar';
+        pb.style.height = '1%';
+        pm.appendChild(pb);
         d.appendChild(elem);
         d.appendChild(i);
         d.appendChild(p);
         d.appendChild(b);
         d.appendChild(fs);
+        d.appendChild(pm);
         this.videoMediaContainer.appendChild(d);
         this.attachMediaStream(elem, stream, type, 'Producer');
         this.myVideoEl = elem;
@@ -950,7 +971,7 @@ class RoomClient {
     }
 
     handleConsumer(id, type, stream, peer_name, peer_info) {
-        let elem, d, p, i, b, fs;
+        let elem, d, p, i, b, fs, pb, pm;
         switch (type) {
             case mediaType.video:
                 this.removeVideoOff(peer_info.peer_id);
@@ -976,11 +997,20 @@ class RoomClient {
                 fs = document.createElement('button');
                 fs.id = id + '__fullScreen';
                 fs.className = html.fullScreen;
+                pm = document.createElement('div');
+                pb = document.createElement('div');
+                pm.setAttribute('id', peer_info.peer_id + '__pitchMeter');
+                pb.setAttribute('id', peer_info.peer_id + '__pitchBar');
+                pm.className = 'speechbar';
+                pb.className = 'bar';
+                pb.style.height = '1%';
+                pm.appendChild(pb);
                 d.appendChild(elem);
                 d.appendChild(p);
                 d.appendChild(i);
                 d.appendChild(b);
                 d.appendChild(fs);
+                d.appendChild(pm);
                 this.videoMediaContainer.appendChild(d);
                 this.attachMediaStream(elem, stream, type, 'Consumer');
                 this.handleFS(elem.id, fs.id);
@@ -1025,7 +1055,7 @@ class RoomClient {
     // ####################################################
 
     async setVideoOff(peer_info, remotePeer = false) {
-        let d, i, h, b, p;
+        let d, i, h, b, p, pm, pb;
         let peer_id = peer_info.peer_id;
         let peer_name = peer_info.peer_name;
         let peer_audio = peer_info.peer_audio;
@@ -1046,10 +1076,19 @@ class RoomClient {
         h = document.createElement('i');
         h.id = peer_info.peer_id + '__hand';
         h.className = html.userHand;
+        pm = document.createElement('div');
+        pb = document.createElement('div');
+        pm.setAttribute('id', peer_id + '__pitchMeter');
+        pb.setAttribute('id', peer_id + '__pitchBar');
+        pm.className = 'speechbar';
+        pb.className = 'bar';
+        pb.style.height = '1%';
+        pm.appendChild(pb);
         d.appendChild(i);
         d.appendChild(p);
         d.appendChild(b);
         d.appendChild(h);
+        d.appendChild(pm);
         this.videoMediaContainer.appendChild(d);
         this.setVideoAvatarImgName(i.id, peer_name);
         this.getId(i.id).style.display = 'block';
@@ -2272,6 +2311,31 @@ class RoomClient {
         });
     }
 
+    // ####################################################
+    // HANDLE AUDIO VOLUME
+    // ####################################################
+
+    handleAudioVolume(data) {
+        let peerId = data.peer_id;
+        let pbProducer = this.getId(peerId + '_pitchBar');
+        let pbConsumer = this.getId(peerId + '__pitchBar');
+        let audioVolume = data.audioVolume * 10; //10-100
+        // console.log('Active speaker', { peer_id: peerId, audioVolume: audioVolume });
+        if (audioVolume > 40) {
+            if (pbProducer) pbProducer.style.backgroundColor = 'orange';
+            if (pbConsumer) pbConsumer.style.backgroundColor = 'orange';
+        } else {
+            if (pbProducer) pbProducer.style.backgroundColor = '#19bb5c';
+            if (pbConsumer) pbConsumer.style.backgroundColor = '#19bb5c';
+        }
+        if (pbProducer) pbProducer.style.height = audioVolume + '%';
+        if (pbConsumer) pbConsumer.style.height = audioVolume + '%';
+        setTimeout(function () {
+            if (pbProducer) pbProducer.style.height = '0%';
+            if (pbConsumer) pbConsumer.style.height = '0%';
+        }, 2000);
+    }
+
     // ####################################################
     // PEER ACTION
     // ####################################################