Hi @f.barone,
Thanks for the post. If you would like to get notified and know who is talking, you may implement and listen to the following callback to identify the currently active audio:
/**
*@brief Notification of in-meeting active speakers.
*@param useridArray The array contain userid of the active speakers.
*/
- (void)onUserActiveAudioChanage:(NSArray *)useridArray;
Hope this helps. Thanks!