Sound in high level can lead to disturbances, and can cause damage to human brain. Generally tall buildings have ventilation systems and other thermal systems which produce heavy noise. These loud noises cause sound pollution and contaminate the environment. Tall buildings use HVAC systems for maintaining the air circulation. HVAC systems are popularly called as Heating, Ventilation and Air conditioning systems. These systems are used indoor and their ventilations are kept outside the buildings. When these systems release heat, some noise will be generated and that noise is released through openings.
In order to decrease sound pollution, the system which is built with HVAC properties should be thoroughly examined by a sound engineer. If the engineer makes the mistake of poor setup, then it will impact the people located inside, as well as outside the building. The engineers who build these HVAC systems must follow the building codes and use HVAC sound attenuators for reducing noise level.
Duct sound attenuators are narrow panes, having different shapes. They are fitted to HVAC outlets for reducing the noise coming out of those outlets. Sound attenuators used in HVAC systems reduce the noise levels by absorbing the unwanted sound. Finally the output sound waves coming out of outlets of buildings will be less effective over human brain.