I would like to share with you a series of articles focused on room acoustics.

Building a High End Listening Room 4: Fine-tuning the Acoustics
https://www.rdacoustic.cz/en/blog/2020/05/15/building-a-high-end-listening-room-4-fine-tuning-acoustics/

Building a High End Listening Room 3: QRD67H – Hybrid Diffuser
https://www.rdacoustic.cz/en/blog/2020/05/02/building-a-high-end-listening-room-3-qrd67h-hybrid-diffuser/

Building a High End Listening Room 2: Construction
https://www.rdacoustic.cz/en/blog/2020/04/21/building-a-high-end-listening-room-2-construction/

Building a High End Listening Room 1: Goals
https://www.rdacoustic.cz/en/blog/2020/03/17/building-a-high-end-listening-room-1-goals/