Keyword:
Diffusion

When sound is reflected, surfaces cause the sound to be distributed throughout the room in such a way that the direction of the sound waves can no longer be detected. In a diffuse sound field, the sound propagates in all directions with the same energy. Measurement rooms in acoustics laboratories are often designed in such a way that a diffuse sound field can be created. In a non-diffuse sound field, sound can propagate more dominantly in some directions than in others. Non-diffuse sound fields are found to a greater or lesser extent in all rooms that are not acoustic laboratories. A typical example of a highly non-diffuse sound field is a room with a sound-absorbing ceiling and no furniture.