I learn about pipewire . In some of the articles, I saw pipewire bring together audio, video and pro-audio under Linux . Here what is pro-audio ?
Pipewire's pro audio is a mode of pipewire where direct access to ALSA nodes is granted, making it possible to define properties such as latency and more. This is made with the professional use in mind, where low-latency is extremely important, studio recordings or other forms of monitoring audio.
To check the current settings of latency use pw-top command, to learn more about the nodes use pw-cli ls Node or pw-dump <node-id>, where the node-id can be found with pw-cli.
The QUANT property of pw-top is the current buffer size (latency) of listed node.