Noise control
Noise Control
Noise control or sound control is a set of strategies to reduce noise pollution or to prevent its propagation, both in the environment and in certain spaces, such as buildings and vehicles.
Pronunciation
- /ˈnɔɪz kənˈtroʊl/
Etymology
The term "noise control" is derived from the English words "noise," which comes from the Old French "noise" meaning "din, disturbance," and "control," which comes from the Middle French "contreroller" meaning "to check, restrain."
Overview
Noise control involves various strategies and techniques for reducing noise, including soundproofing, noise cancellation, and noise reduction. These techniques can be applied in various settings, such as in industrial environments, in residential areas, and in transportation.
Techniques
There are several techniques used in noise control, including:
- Soundproofing: This involves the use of materials and techniques to prevent sound from entering or leaving a particular space.
- Noise cancellation: This is a method that involves producing a sound wave with the same amplitude but with inverted phase to the original sound. The waves combine to form a new wave, in a process called interference, and effectively cancel each other out.
- Noise reduction: This is a process that decreases the level of noise in a signal.
Related Terms
- Acoustics: The science that deals with the production, control, transmission, reception, and effects of sound.
- Decibel: A unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale.
- Sound insulation: The ability of a building or a building element to reduce sound transmission.
- Vibration control: The process of minimizing or eliminating vibrations produced by mechanical systems.
External links
- Medical encyclopedia article on Noise control
- Wikipedia's article - Noise control
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