| environ. |
noise reduction The reduction in the sound pressure level of a noise, or the attenuation of unwanted sound by any means; noise abatement Measures to reduce noise at the source, to encourage quieter technologies or equipment or to prevent or reduce the propagation of sound. Measures may include the isolation and damping of vibration sources; the replacement of components with quieter parts and material; the enclosure of particularly noisy components; the provision of noise barriers, etc.; noise reduction |
