Defines the sound absorption of a surface.

The sound.absorption texture property defines the sound absorption of a surface. It is used by the audio module to determine the fraction of sound energy absorbed by the surface. Values for this texture property can be looked up in engineering tables (Sound Absorption Coefficient) using middle values around 1kHz. Typical values are like these:

• Bricks, wallpaper, smooth concrete: 0.04 - 0.08
• Concrete rough: 0.34
• Plywood: 0.17 - 0.2
• Carpet: 0.16
• Seats: 0.8
• Glass: 0.06
• Drapery: 0.2 - 0.5
• Fiberglass: 0.9 - 0.95
• Living Room: 0.15

It is better to use higher absorption values if in doubt to avoid high reverberant rooms. Most materials are anyways more absorbing as you might think due to room acoustics used in buildings.

The source is typically a single value inside the range from 0 to 1. 0 represents fully reflective material absorbing no sound. 1 represents a full absorbing surface reflecting no sound.

The default value for this texture property is 0.12 matching common rooms with reduced reverberation.