I've spent time debugging this and it looks like the problem is with the BT chip firmware that potentially contains not ideal parameters.
I've also captured an audio sample directly from pcm and the sound is clear at the beginning however the quality decreases over time with the noise overtaking the voice eventually [like the noise volume increases step by step]. At the same time the voice through BT headset is polluted with the noise from the beginning. I have also used a different firmware for the BT chip and as it produced no audio at all through the BT it has also made the pcm record perfectly clean from the beginning till the end. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1590844 Title: Bluetooth headset not working with Meizu Pro 5 Ubuntu Edition Status in Canonical System Image: Confirmed Status in turbo: Confirmed Status in bluez package in Ubuntu: Confirmed Bug description: My bluetooth headset perfectly connects to my Meizu Pro 5. However, the sound quality is so poor (a lot of noise) such that you don't understand your communication partner. Note that the headset works perfectly together with Ubuntu on my Nexus 4. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1590844/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
