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Noise Control Basics
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Acoustic Absorption
Absorbs sound energy and converts it into heat, reducing the amount of reflected sound and echo.
Sound Insulation
Blocks the transmission of sound through structures by creating a barrier that reflects or absorbs sound waves.
Vibration Damping
Reduces the transmission of vibration from a source by using materials or systems that absorb vibrational energy.
Vibration Isolation
Prevents vibrations from reaching a sensitive object by using isolators or mounts that decouple the object from the vibration source.
White Noise Generation
Masks unwanted sounds by producing a background noise that is a mix of all audible frequencies at equal intensity.
Acoustic Enclosures
Contain and absorb sound at the source to keep it from spreading to the surrounding environment.
Acoustic Diffusers
Scatter sound waves, spreading them out to prevent focus points of noise and reduce echoes.
Sound Reflecting Materials
Reflects sound waves away from the protected area, effectively redirecting the noise.
Soundproof Windows
Reduces noise transmission through windows using multiple glass panes and air gaps.
Quieting
Involves designing machinery or equipment to operate more quietly, by minimizing noise at the source.
Acoustic Foams
Porous materials that trap sound waves, converting the sound energy into heat through friction.
Landscaping (for Noise Control)
Plants and earth mounds can help absorb and deflect sound away from sensitive areas.
Helmholtz Resonators
Designed to target and absorb specific frequencies based on the principle of resonant frequency absorption.
Acoustic Baffles
Suspended elements that absorb sound, reducing noise levels and reverberation in large enclosed spaces.
Rubber Flooring
Acts as a sound barrier and reduces the impact noise and vibration transmission between floors.
High Mass Law
The principle that increasing the mass of a barrier improves its sound isolation properties, attributable to the law of mass action.
Bass Traps
Absorb low-frequency noise, improving acoustic quality by preventing the build-up of low-frequency energy in corners.
Green Roofs
A layer of vegetation on a roof can absorb, deflect, and reduce sound propagation.
Sonic Crystals
Artificial structures made of periodic arrays that can control sound waves through Bragg scattering.
Noise Cancelling Headphones
Use active noise control to cancel out external noise by emitting an inverse sound wave that destructively interferes with the noise.
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