Ubuntu
pulseaudio package

  1. Bug #508522
  2. Comment #38

Comment 38 for bug 508522

Revision history for this message
Raphael Carrier (raphael-carrier) wrote : Re: Mic is not available with A2DP Bluetooth profile

Its a limitation of the bluetooth protocol.

Windows and macos implement both A2DP and HFP and switch on the fly when microphone usage is requested by an app. HFP uses a low quality GSM codec so the sound quality will degrade when switching to that profile.

It is possible to have multiple bluetooth profiles active on one device but A2DP and HFP are mutually exclusive due to bandwidth limitations.