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# helpdesk

steep-balloon-41261

04/27/2023, 11:21 AM

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polite-kilobyte-67570

04/27/2023, 11:47 AM

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track.setWebAudioPlugins();

I think you will want to set the actual panner node here? you should remove • track.pannerNode = pannerNode • sourceNode.connect(pannerNode).connect(audioContext.destination) you need to • supply your own audio context in

{ expWebAudioMix: {audioContext: this.audioContext}}

• call

track.setWebAudioPlugins([pannerNode]);

shy-farmer-35617

04/27/2023, 11:57 AM

Hey Lukas, Thanks for you answer, did that but still nothing happen. No errors nothing, track is subscribed but nothing appears in my DOM,meaning no audio track.

shy-farmer-35617

04/27/2023, 12:25 PM

I got the audio working (input problem), spatialization seems to work but the attenuation does not work)

shy-farmer-35617

04/27/2023, 12:40 PM

Copy code

var AC = new AudioContext();
const room = new LivekitClient.Room({options : {expWebAudioMix:  AC}});

function handleTrackSubscribed(track, publication, participant) {


    if (track.kind === LivekitClient.Track.Kind.Audio) {
   var  audioContext  = this.audioContext;
      const sourceNode = audioContext.createMediaStreamSource(track.mediaStream)

        // Create and set PannerNode
        var  pannerNode = new PannerNode(audioContext, {
          distanceModel: "exponential",
          coneInnerAngle: 360, 
          coneOuterAngle: 360,
          refDistance:12,
          maxDistance: 15,
          rolloffFactor:2,
          coneOuterGain: 0,
        });
        //Define Start Position
        pannerNode.positionX.setValueAtTime(10000, 0); 
        pannerNode.positionY.setValueAtTime(10000, 0);
        pannerNode.positionZ.setValueAtTime(0, 0);
        //Connect to destination
       track.setWebAudioPlugins([pannerNode]);

       track.attach();
}

polite-kilobyte-67570

04/27/2023, 3:12 PM

~~have you tried lowering the refDistance setting or setting maxDistance higher? that seems rather close right now. you would only get slight attenuation between 12-15 right now~~ edit: ah, maxDistance is only used for

linear

distance model anyways… but if panning is working already the attenuation should work too as long as your rollof and refdistance settings make sense.

shy-farmer-35617

04/27/2023, 4:03 PM

I have tried every combinations, the sound always remains at the same level

shy-farmer-35617

04/27/2023, 4:05 PM

Linear could work for me having no attenuation between 0-12 and small attetnuation betwween 12-16. But I need the sound to phase out 🙂

shy-farmer-35617

04/27/2023, 4:06 PM

is setWebAudioPlugins and expWebAudioMix doing anything special ? Or creating and managing my audio elements is the same?

polite-kilobyte-67570

04/27/2023, 4:10 PM

try with

Copy code

distanceModel: "linear",
refDistance: 1,
maxDistance: 10000,
rolloffFactor: 10,

shy-farmer-35617

04/27/2023, 4:22 PM

const sourceNode = audioContext.createMediaStreamSource(track.mediaStream) Should I keep this? I don't think so right?

shy-farmer-35617

04/27/2023, 4:27 PM

Copy code

var AC = new AudioContext();
const room = new LivekitClient.Room({options : {expWebAudioMix:  AC}});

function handleTrackSubscribed(track, publication, participant) {

      if (track.kind === LivekitClient.Track.Kind.Audio) {
        var  audioContext  = this.audioContext;     
             // Create and set PannerNode
             var  pannerNode = new PannerNode(audioContext, {
               distanceModel: "linear",
               refDistance:1,
               maxDistance: 1000,
               rolloffFactor:10,
             });
            
            track.setWebAudioPlugins([pannerNode]);
            track.attach();
  
        // Create and set Listener
        SpeakerPositions.set(participant.identity, new Map());
        SpeakerPositions.get(participant.identity).set("panner", pannerNode);
        SpeakerPositions.get(participant.identity).set("position", {x:0, y: 0, z:0});
    }
  }

shy-farmer-35617

04/27/2023, 4:50 PM

I think panner is not working at all

polite-kilobyte-67570

04/27/2023, 5:21 PM

I think you would have an easier time if you enabled type checking in your IDE. this seems wrong

expWebAudioMix: AC

. it should say

expWebAudioMix: {audioContext: AC}

shy-farmer-35617

04/27/2023, 5:23 PM

oh right

shy-farmer-35617

04/27/2023, 5:23 PM

is webaudiomix doing anything special?

shy-farmer-35617

04/27/2023, 5:44 PM

I reused my old way

shy-farmer-35617

04/27/2023, 5:44 PM

and it's working

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