Side walls: Half reflection, half diffusion

An auditorium side wall. The lower section, near the audience, is made into a convex-concave diffuser, with wooden strips, blocks, or wave shapes at least ten centimeters deep; the upper section is a flatter, hard surface responsible for reflecting sound to the opposite side. The wall is not parallel to the opposite wall, but slightly splayed outwards. Avoid: making both side walls parallel smooth hard surfaces, completely absorbing the side walls with soft padding, making the diffuser's convex-concave depth too shallow to be effective, or creating large glass openings on the side walls.

Translated from Chinese by AI.

一面觀眾席側牆。下段接近觀眾的部分做成凹凸的擴散體,木條、方塊或波浪造型深度在十公分以上;上段是較平整的硬面負責把聲音反射到對側。牆面不平行於對牆,略微外張。避免:把兩側牆做成平行的平滑硬面、用軟包把側牆全部吸掉、擴散體的凹凸深度太淺失去作用、在側牆上開大面玻璃。