nixpkgs/nixos/modules/services/desktops/pipewire/alsa-monitor.conf.json

{
  "properties": {},
  "rules": [
    {
      "matches": [
        {
          "device.name": "~alsa_card.*"
        }
      ],
      "actions": {
        "update-props": {
          "api.alsa.use-acp": true,
          "api.acp.auto-profile": false,
          "api.acp.auto-port": false
        }
      }
    },
    {
      "matches": [
        {
          "node.name": "~alsa_input.*"
        },
        {
          "node.name": "~alsa_output.*"
        }
      ],
      "actions": {
        "update-props": {
          "node.pause-on-idle": false
        }
      }
    }
  ]
}