Soundproofing is any means of reducing sound pressure with respect to a specified sound source and receptor. There are numerous basic approaches to reducing sound: increasing the distance between source and receiver, using noise barriers to reflect or absorb the energy of the sound waves, using damping structures such as sound baffles, or using active anti-noise sound generators.

Two specific soundproofing problems may need to be considered when designing acoustic treatments - to improve the

sound at source or to improve the barriers between source and receiver

The actions for noise reduction fall into specific categories:

Distance


The energy density of sound waves decreases as they spread out, so that increasing the distance between the receiver and source results in a progressively lesser intensity of sound at the receiver. In a normal three dimensional setting, with a point source and point receptor, the intensity of sound waves will be softened according to the layers introduced to reduce sound movement.

Damping


Damping means to reduce vibration or resonance in a room, by absorption or redirection (reflection or diffusion). Absorption will reduce the overall sound level, whereas redirection makes unwanted sound harmless or even beneficial by reducing coherence. Damping can reduce the acoustic resonance in the air, or mechanical resonance in the structure of the room itself or things in the room.

Absorption


Absorbing sound spontaneously converts part of the sound energy to a very small amount of heat in the intervening object (the absorbing material), rather than sound being transmitted or reflected. There are several ways in which a material can absorb sound. The choice of sound absorbing material will be determined by the frequency distribution of noise to be absorbed and the acoustic absorption profile required.

Technological advancements in recent years mean all options can be covered by the installation and design of systems to manage movement of sound waves and often within buildings by the simple introduction of a soundproofing application to enable a high level of control over movement of sound waves



B.C Associates (Northern) have qualified surveyors who will design any specification for noise reduction and disruption and we can offer advice on how to create areas and packages to meet all needs practically and financially.

Sound Proofing

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