Follow the instructions here: https://fedoraproject.org/wiki/Changes/DefaultPipeWire#How_To_Test
Run the following command to install pipewire (will remove pulseaudio):
sudo dnf install --allowerasing pipewire-pulseaudio
Reboot your machine.
pactl info should now list Server Name: PulseAudio (on PipeWire 0.3.x).
Instructions from here: https://www.redpill-linpro.com/techblog/2021/05/31/better-bluetooth-headset-audio-with-msbc.html
The default audio codec in Fedora 33 for HSP/HFP is CVSD, which is an 8 kHz
codec. mSBC is a 16 kHz codec. mSBC is disabled by default because it’s not
supported on all Bluetooth input devices. To enable it, edit either
~/.config/pipewire/media-session.d/bluez-monitor.conf or
/etc/pipewire/media-session.d/bluez-monitor.conf with the following contents:
properties = {
bluez5.msbc-support = true
}
Then restart the pipewire service with
systemctl --user restart pipewire.service
In your system settings for audio, you should now have an mSBC codec available for the HSP/HFP protocol.