pipewire low audio

bluez-monitor.conf

# Bluez monitor config file for PipeWire version "0.3.30" #
#
# Copy and edit this file in /etc/pipewire/media-session.d/
# for systemwide changes or in
# ~/.config/pipewire/media-session.d/ for local changes.

properties = {
    # Enable mSBC support, disabled by default. Be aware that
    # mSBC is not expected to work on all headset + adapter combinations.
    # This can be overloaded for a specific device and native backend
    # in rules section.
    #bluez5.msbc-support   = false

    #bluez5.sbc-xq-support = false

    # Enabled headset roles (default: [ hsp_hs hfp_ag ]), this
    # property only applies to native backend. Currently some headsets
    # (Sony WH-1000XM3) are not working with both hsp_ag and hfp_ag
    # enabled, disable either hsp_ag or hfp_ag to work around it.
    #
    # Supported headset roles: hsp_hs (HSP Headset),
    #                          hsp_ag (HSP Audio Gateway),
    #                          hfp_hf (HFP Hands-Free),
    #                          hfp_ag (HFP Audio Gateway)
    #bluez5.headset-roles = [ hsp_hs hsp_ag hfp_hf hfp_ag ]

    # Enabled A2DP codecs (default: all).
    bluez5.codecs = [ldac]

    # Properties for the A2DP codec configuration
    #bluez5.default.rate     = 48000
    #bluez5.default.channels = 2
}

rules = [
    # An array of matches/actions to evaluate.
    {
        # Rules for matching a device or node. It is an array of
        # properties that all need to match the regexp. If any of the
        # matches work, the actions are executed for the object.
        matches = [
            {
                # This matches all cards.
                device.name = "~bluez_card.*"
            }
        ]
        actions = {
            # Actions can update properties on the matched object.
            update-props = {

                # Auto-connect device profiles on start up or when only partial
                # profiles have connected. Disabled by default if the property
                # is not specified.
                #bluez5.auto-connect = [
                #    hfp_hf
                #    hsp_hs
                #    a2dp_sink
                #    hfp_ag
                #    hsp_ag
                #    a2dp_source
                #]
                bluez5.auto-connect  = [ hfp_hf hsp_hs a2dp_sink ]

                # Overload mSBC support for native backend and a specific device.
                #bluez5.msbc-support = false

                # Hardware volume control (default: [ hfp_ag hsp_ag a2dp_source ])
                #bluez5.hw-volume = [
                #    hfp_hf
                #    hsp_hs
                #    a2dp_sink
                #    hfp_ag
                #    hsp_ag
                #    a2dp_source
                #]

                # LDAC encoding quality
                # Available values: auto (Adaptive Bitrate, default)
                #                   hq   (High Quality, 990/909kbps)
                #                   sq   (Standard Quality, 660/606kbps)
                #                   mq   (Mobile use Quality, 330/303kbps)
                #bluez5.a2dp.ldac.quality  = auto

                # AAC variable bitrate mode
                # Available values: 0 (cbr, default), 1-5 (quality level)
                #bluez5.a2dp.aac.bitratemode = 0

                # Profile connected first
                # Available values: a2dp-sink (default), headset-head-unit
                #device.profile = a2dp-sink
            }
        }
    }
    {
        matches = [
            {
                # Matches all sources.
                node.name = "~bluez_input.*"
            }
            {
                # Matches all sinks.
                node.name = "~bluez_output.*"
            }
        ]
        actions = {
            update-props = {
                #node.nick            = "My Node"
                #node.nick            = null
                #priority.driver      = 100
                #priority.session     = 100
                node.pause-on-idle    = false
                #resample.quality     = 4
                #channelmix.normalize = false
                #channelmix.mix-lfe   = false
                #session.suspend-timeout-seconds = 5      # 0 disables suspend
                #monitor.channel-volumes = false

                # A2DP source role, "input" or "playback"
                # Defaults to "playback", playing stream to speakers
                # Set to "input" to use as an input for apps
                #bluez5.a2dp-source-role = input
            }
        }
    }
]