The wooden diffuser is an irregular flat design. It is composed of a series of parallel "algae wells". The purpose is to diffuse in the reflection. When the sound wave is incident on the horizontal diffuser from 135 degrees, it can be The sound is reflected with equal intensity between 30 degrees and 50 degrees.
The wooden diffuser is an important part of the sound field, including many calculations such as the Sabine formula or the Ealing formula are calculated on the basis of the complete sound field diffusion, so an environment with insufficient sound field diffusion may affect the acoustic calculation formula accuracy. Therefore, when shaping the sound field environment, making the sound field spread evenly is an important sound project, which is conducive to the purity and improvement of sound quality. The theory of sound field diffusion comes from the quadratic remainder diffusion theory published by German physicist and acoustic expert Manf red R. Schroeder in 1975. He studied the propagation of sound waves to be of great help to the human ear. The "quadratic" in the quadratic remainder diffusion theory refers to the quadratic, and the remainder refers to the remainder after the natural number is divided by the prime number (a number that cannot be divided except 1 and other things). Because the wave can be spread more evenly, the sound quality of the second remainder has a positive help. Naturally extended and loose and elegant high-frequency performance, the details of the music can also be significantly increased, and some subtle dynamic changes that are easily perceptible can be clearly presented.
Compared with a smooth reflective surface, a diffuser can effectively avoid focusing of sound waves. After the sound waves are reflected, all sound waves will be reflected in the same direction. After being reflected on the surface of the flat plate with the second remainder diffusion, the sound energy will be scattered and reflected to different directions with different phase differences. These irregular reflections of uniform energy can make human ears feel a sense of space.
The secondary remainder diffuser has another function. When the reflecting surface is a quadratic remainder diffuser, because the sound waves diffuse in a semicircular direction, there are many different reflection paths that gather at the listening position, and so on, there are countless convergence points of the same nature, which expands the listening area . The secondary remainder diffuser can disperse the sound energy, play a role in preventing echo and standing waves, and at the same time improve the brightness of the sound and improve the sound quality.