Acoustic absorption converts sound energy into heat using friction within porous materials. Acoustic diffusion scatters reflected sound waves evenly in time and direction without removing energy, preserving room liveness.
In-Depth Acoustic Principle
Small rooms require heavy absorption to control room modes and flutter echo. Larger control rooms and home theaters use diffusers (QRD or PRD) on rear walls to maintain spatial warmth without deadening the space.
- ITU-R BS.1116-3: Listening environment for multichannel sound
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