We were quite busy working on HD audio conferencing support and now it's available for all VoxImplant developers. In HD mode audio is being mixed at 48KHz, all audio sources with lower sample rate will be resampled to 48KHz. Web and mobile SDK uses Opus audio codec and offers the best possible audio quality. Up to 100 participants can be connected to a conference.

It's simple to enable HD mode for a conference in VoxEngine scenario:

// HD mode can be enabled for the conference by passing
// 'hd_audio' parameter set to true var 
conf = VoxEngine.createConference({ hd_audio: true });

You can learn more about building audio conferencing services using VoxImplant in our tutorial. HD audio conference demo app source code is available at github.