[asterisk-users] One leg in a conference and adjusting stream volume of other leg

[Markus]

Hi Matthew,

Am 27.08.2012 15:41, schrieb Matthew Jordan:
>> When they adjust the volume of the stream, if effects only their
>> stream,
>> and not the volume of the stream of the other callers.
>>
>> In short: All callers at all times are *always* in the same
>> conference,
>> but each caller is able to increase or decrease the volume of "their"
>> MP3 stream individually.
>
> You can use ConfBridge's DTMF menus to allow a participant to change
> their listening volume.  This should only affect the audio that the
> participant hears, and not the other participants in the conference -
> regardless of whether or not the audio originates from the same source.

thanks! I wasn't clear enough in my original mail. What I meant is: the 
volume of the stream that a user is listening to is adjusted, but the 
volume of the conference itself is not changed! That means, a conference 
is going on, and everyone is listening to the same music at the same 
time, but when the music becomes too loud or annoying, a user can 
individually adjust the volume of his music, while the volume of the 
speech of each user, basically the conference itself, remains the same.

I think what I'm looking for is to inject the MP3 stream into only the 
"listening" direction of each user, and allow its volume to get adjusted 
via DTMF. And at the same time, each user is in the same conference.

Even more: I would like to be able to feed each user a *different* 
volume-adjustable MP3 stream, but all of the users are still in the same 
conference (not hearing each others MP3 stream, only their voice!).

I've researched high and low and came up with the following pointers:

- Dial with the G flag
- ChanSpy, whispering
- VOLUME()
- MOH connected to a local channel
- Queue that loops indefinitely

But I don't know yet how to put it all together.

I found some hints in the right direction here:

"Playing audio to one channel only":
http://www.mail-archive.com/asterisk-users@lists.digium.com/msg245811.html

"Meetme with background music" (last post)
http://fonality.com/trixbox/forums/trixbox-forums/help/meetme-background-music

"Background music during a call"
http://www.mail-archive.com/asterisk-users@lists.digium.com/msg254252.html


Does anyone have the right solution and is available to create a 
dialplan for me for cash? Please get in touch!


Thank you!
Markus