The Science Behind Acoustics

Absorption panels , corner traps and acoustic diffusers set up in a home theatre

What are acoustics?

Acoustics is the study of how sound interacts with or responds to an enclosed environment. When sound comes in contact with a material, it either absorbs, reflects or refracts, which changes the acoustics of the surrounding space. The substance with which the sound interacts is therefore very important!

What is sound reflection?

When a substance mirrors back the sound, it does so by reflecting. Angle of incidence: This describes the angle at which sound bounces back from a surface. The wall’s angle and shape play a role in reflection. In comparison to sound hitting a curved wall, a straight wall will produce a different sound. According to the surface’s substance and the frequency of the sound that strikes it, reflections vary in amplitude and intensity.

What is sound absorption?

Sound that entirely penetrates inside a material rather than getting reflected is known as sound absorption. The degree of absorption is influenced by the material’s porosity as well as the frequency of the absorbed sound. 

So why are acoustic absorbers used?

Acoustic absorbers help in reducing airborne noise in any space by preventing sound waves from bouncing off of hard surfaces. They are able to absorb and retain sound waves, as opposed to reflecting them, due to their open-cell or porous structure, transforming the sound energy into thermal energy.

Reflected sound infographic

What is sound refraction?

Refraction of sound refers to a shift in the direction of waves as they move from one medium to another due to the density. A shift in the waves’ speed and wavelength occurs along with refraction, or bending of their path. 

What is sound diffraction?

The capability of a sound wave to deflect around a substance is known as diffraction. Even though the wave path may have a number of barriers, it aids long-distance communication for creatures like elephants and whales.

Difference between absorbers and diffuser

What is known as the absorption coefficient of a material?

When evaluating the efficacy of sound-absorbing materials for noise reduction, the absorption coefficient measures the absorption capacity of any material as a single number. It is the ratio of energy a material absorbs to energy that strikes its surface. The absorption coefficient of soft materials is higher than that of hard surfaces.

Generally, Alpha represents the absorption coefficient. The absorption coefficient can be between zero to one. Where one represents that all the sound is being absorbed by the material whereas zero represents that no sound is absorbed.

Timber acoustics panels are filled with dense Roxul Rockwool (absorption coefficient of roxul rockwool is 1) for optimum sound absorption.

Any music studio, recording studio, office, home theatres, restaurants needs to suppress flutter echoes, control noise, comb filter, and remove slap echo. Timber Acoustics Absorption Panels are sound absorbing panels that are used as a complete acoustic solution in combination with corner bass traps and diffusers.

Absorption panels , corner traps and acoustic diffusers set up in a home theatre

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