1 Reply Latest reply on Nov 25, 2014 11:43 PM by Vnur

    audio echo cancellation not working over rtmp

    kenmckaba2 Level 1

      I'm doing a audio conferencing app, using RTMP to our server (freeswitch) and getting a bad echo from anyone using speakers & mic- headsets don't cause the echo.  I've also tried 3rd party audio chat apps and they have echo too.

       

      I'm using getEnhancedMicrophone() and have played with all the Microphone & MicrophoneEnhancedOptions I can find.  I followed this article carefully: Best practices for acoustic echo cancellation in Flash Player | Adobe Developer Connection

       

      Does echo cancellation work over RTMP or only over RTMFP?

       

      Here's code I use to connect to send and receive our server's stream:

       

      netConnection = new NetConnection();

      netConnection.connect("rtmp://whatever.com/phone");

      incomingNetStream = new NetStream(netConnection);
      incomingNetStream.client = this;
      incomingNetStream.bufferTime = 0.2;
      incomingNetStream.play("play");
      incomingNetStream.receiveAudio(true);

       

      outgoingNetStream = new NetStream(netConnection);
      outgoingNetStream.addEventListener(NetStatusEvent.NET_STATUS, netStatus);
      outgoingNetStream.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler);

      outgoingNetStream.bufferTime = 0;

      outgoingNetStream.attachAudio(mic);
      outgoingNetStream.publish("publish", "live");

       

      Is anyone successfully using RTMP with echo cancellation?  Can you send a link so I can try it?

       

      Any other ideas?

       

      Thanks,

      Ken