Resolving sound problems

[ed phillis]

Hi

We are using BBB for distance learning and are running in to problems with our tutors and schools where one is not able to hear the other. There might be some user problems here although it is happening with some frequency. We are using the client requirements documentation but there seems to be some variables that are throwing us. For example, my colleague suggests some times that they should turn of the computer, plug the headphones in, restart, load up BBB. I'm not overly keen on these sort of funky suggestions as they dont make a lot of sense to me and would rather get to the bottom of the issue.

Has anyone else experienced problems that have come about with sound that are not resolved by following client requirements? As I say there may be some user error hear but I dont think it accounts for it all. I myself have experienced problems with either webcam or sound not working and the browser gets in knickers in a twist not asking for permission for webcam or sound...

Best

Ed

[Fred Dixon]

Hi Ed,

A bit of background:

When a user starts BigBlueButton, they are presented with the Audio Settings dialog.   In this dialog, they can test/change their microphone or click Join.

Most users click Join, which causes Flash to query the user's OS and select the default microphone.

The problem:

The most common problem with using BigBlueButton is that default microphone isn't the active microphone.  When this occurs, the user can hear others, but no one can hear them.

The solution: 

Assuming they have a working microphone, the solution is to have the user open the audio settings dialog and choose the correct microphone.  The steps are outlined in both the moderator/presenter and viewer tutorial videos.

   http://bigbluebutton.org/videos/

As this is the most common problem, we're working on improving the Audio Settings dialog to make it very clear to the user which microphone they have chosen, whether their is any activity (energy) on that microphone, and warn them if the current select Microphone is working.  See

  https://code.google.com/p/bigbluebutton/issues/detail?id=1699

A few more thoughts:

- If BigblueButton is not acting correctly, you can always refresh the browser.  This will load the session anew and bring you back into the conference.

- It's best to plug in a new microphone *before* starting BigBlueButton.  Flash queries the OS for the list of available microphones on startup, but not during the BigBlueButton session.

- One final suggestion, when using Google Chrome, the browser itself asks the user for permission for Flash to access the webcam/microphone.  This means there are *two* areas a user must give permission: (1) the Flash Security Dialog and (2) Google's security prompt.  It's easy to miss the second, and, if the user doesn't give Chrome permission as well, the microphone will not work.

Regards,... Fred

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[Ed Phillis]

Thanks Fred, some new information there.

cheers


ed

[Praveen Kumar]

Dear Fred

I am having issue with audio when using multiple meeting rooms on Bigbluebutton

The audio from one meeting room is hard in another meeting room.

Please let me know how i can resolve the issue

I am using Joomla 3.X as my front end.

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[HostBBB.com]

Take a look at voice bridge (bridge) being passed in Joomla with the create api call.

If the same number is used, all meetings with hear each other.

If you remove the vbridge param,  then the server will generate unique ids for each meeting.

regards,

Stephen

hostbbb.com

[Praveen Kumar]

Thank You Stephen

You are right joomla is using the same video bridge number 12345 for all the meetings i had created.

I changed the bridge numbers for all the meetings. And seems things are working fine.

I am not sure how I can remove the voice bridge parameter in Joomla.

I am finding issues with muting all participant mic accept the moderator as i am not able to control the participants mic

[Fred Dixon]

Hi Praveen,

> I am finding issues with muting all participant mic accept the moderator as i am not able to control the participants mic

All moderators have the ability to mute/unmute anyone's microphone (including other moderators).  For an overview, see this video

  https://www.youtube.com/watch?time_continue=97&v=J9mbw00P9W0

The ability to mute/unmute anyone's microphone, as well as the ability to mute all microphones, gives the instructors control over the student's audio to prevent background noise.

Regards,... Fred

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[Mustafa OF]

Hi dear,

I installed BBB 1.1 . Everything ok. When i used in Internet Explorer there is not problem in microphone, but Google chrome does not use microphone (Although i open microphone permissions). Windows system runs microphone.

must...@gmail.com

Regards

19 Temmuz 2016 Salı 16:33:19 UTC+3 tarihinde Fred Dixon yazdı:

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[Chad Pilkey]

If the page is being served over HTTP then Chrome will block access to the microphone and webcam. If you test with our demo server (https://demo.bigbluebutton.org/b) that is using HTTPS it should work fine.