Double Your Soundproofing Power with Wall Shape!? The Secret to Enhancing Soundproof Room Performance

Dramatically Improve Soundproof Room Performance! The Key Lies in Wall Shape!?

When you think of a soundproof room, you probably imagine flat rectangular walls. But what if simply changing the shape of those walls could enhance sound insulation performance? In this article, we explore whether performance can be improved by designing the exterior walls of a soundproof room with shapes other than “flat”.

The True Nature of Sound is “Air Vibration”

First, let’s understand what sound actually is. Sound is a phenomenon where air molecules (mainly nitrogen and oxygen) vibrate and propagate. Just as an airplane wing pushes against air and causes vibrations that spread outward, sound also spreads like waves. Since this vibration moves in a spherical manner, you can think of sound as a large ball.

When sound hits a wall, the vibration is transmitted to the wall and either reflected or transmitted through it. This characteristic forms the basis of the “Mass Law” and the “Stiffness Law” used in soundproof rooms. According to the Mass Law, the heavier the wall, the easier it is to reflect sound, and according to the Stiffness Law, the harder the wall, the stronger its sound-reflecting ability.

Why Wall Shape Affects Soundproofing Performance

Returning to the main topic: what would happen if we shaped the walls of a soundproof room with protrusions or convex curves instead of keeping them flat?

For example, if you throw the same ball at a flat wall and at a wall with protrusions, which wall would bounce the ball farther? From everyday experience, you would expect the wall with protrusions to bounce the ball farther. This intuition is also backed by physics.

The Law of Pressure Reveals the Power of Shape

According to the pressure formula P = F/S (Pressure = Force ÷ Area), the smaller the surface area, the greater the pressure. In other words, by designing the walls of a soundproof room with convex shapes to reduce the surface area exposed to sound, the force of sound reflection can be strengthened, thus potentially improving sound insulation performance.

Shaping the Future of Sound Control

Based on this theory, our company is conducting experiments to further enhance the performance of soundproof rooms. While flat walls have been the norm, introducing shaped surfaces opens up new possibilities for sound insulation. We will continue to develop high-performance soundproofing products tailored to user needs.

At Enclosure, we leverage our expertise in soundproof rooms, anechoic chambers, and noise control to offer custom-made solutions.