@63 - your headset likely doesn't support mSBC (16 KHz), only CVSD (8KHz) in HFP/HSP mode. If that is the case, any fix - using a USB soundcard as you did, or a software fix (which this page is tracking) isn't gonna help.
If it does support mSBC, 1Mii B10, and Avantree Leaf, Creative BT-W3 should be able to give decent quality audio. The definition of 'decent' varies of course. Most people in this age and time wouldn't be happy with 8 KHz (else, this page wouldn't exist), but mSBC is decent enough for most people, at least for typical voice calls. You can check the sampling frequency used very easily using Audacity > Record a few seconds using the mic in question > Analyze > Plot Spectrum. Note that Audacity plots in log scale for freq by default. If the highest freq component is just below 4 KHz, it is using CVSD @ 8 KHz sampling, and your headset is the likely culprit. If the highest component is 8 KHz, it is using mSBC @ 16 KHz. If you think that is not good enough, your options are limited. You can use FastStream (FS) which is supported only by a limited number of headsets, as well as by dongles such as Leaf, 1Mii B10, Creative BT-W2. No OS afaik supports it, so you can't use the dongle. Many devices have buggy implementations of FS. AptX LL also supposedly has bidirectional audio support, but the voiceback part is not supported by any device that I know of. ** Bug watch added: github.com/Arkq/bluez-alsa/issues #29 https://github.com/Arkq/bluez-alsa/issues/29 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1838151 Title: Poor quality audio with modern Bluetooth headsets in HSP/HFP. Missing wide band speech support (Bluetooth A2DP codecs). Status in PulseAudio: New Status in bluez package in Ubuntu: Fix Released Status in linux package in Ubuntu: Fix Released Status in pulseaudio package in Ubuntu: In Progress Status in Arch Linux: New Bug description: Bluetooth HSP/HFP audio quality is poor on Ubuntu comparative to all other major platforms (Windows, MacOS, ChromeOS, Android, iOS). Modern Bluetooth headsets (such as the Bose QC series headphones, many others) are capable of using HFP 1.6 with mSBC 16kHz audio encoding. As it currently stands, Ubuntu defaults to only supporting HSP headsets using 8kHz CVSD, and is incapable of supporting HFP 1.6 at this time. The ChromiumOS team recently tackled this issue - https://bugs.chromium.org/p/chromium/issues/detail?id=843048 Their efforts may assist in bringing this to Ubuntu, however it appears that there are quite a lot of differences considering they have developed their own audio server solution etc. The Bluetooth Telephony Working Group published the HFP 1.6 spec in May 2011 - https://www.bluetooth.org/docman/handlers/downloaddoc.ashx?doc_id=238193 Patches have been proposed in the past for this issue to the kernel and PulseAudio: PulseAudio: https://patchwork.freedesktop.org/patch/245272/ Kernel: https://www.spinics.net/lists/linux-bluetooth/msg76982.html It appears that the Chromium OS team applied the same kernel patch: https://chromium.googlesource.com/chromiumos/third_party/kernel/+/77dd0cb94c1713a8a12f6e392955dfa64c430e54 ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: pulseaudio 1:12.2-2ubuntu3 ProcVersionSignature: Ubuntu 5.0.0-20.21-generic 5.0.8 Uname: Linux 5.0.0-20-generic x86_64 ApportVersion: 2.20.10-0ubuntu27.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jnappi 2777 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Sat Jul 27 11:08:29 2019 EcryptfsInUse: Yes InstallationDate: Installed on 2017-11-04 (629 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018) ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: pulseaudio UpgradeStatus: Upgraded to disco on 2019-07-18 (9 days ago) dmi.bios.date: 06/07/2016 dmi.bios.vendor: LENOVO dmi.bios.version: R07ET67W (2.07 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FW000TUS dmi.board.vendor: LENOVO dmi.board.version: SDK0J40705 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrR07ET67W(2.07):bd06/07/2016:svnLENOVO:pn20FW000TUS:pvrThinkPadT460p:rvnLENOVO:rn20FW000TUS:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T460p dmi.product.name: 20FW000TUS dmi.product.sku: LENOVO_MT_20FW_BU_Think_FM_ThinkPad T460p dmi.product.version: ThinkPad T460p dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/pulseaudio/+bug/1838151/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
