32 C.F.R. § 650.163 Explanation of terms.
Title 32 - National Defense
(a) Administrative noise control measures. Policy decisions and administrative actions taken to regulate the conduct of training, operations and activities for the purpose of relocating, rescheduling, or restricting activity to abate or control noise; e.g., decisions on the time of day, site, and number of operations, firing schedules, flight patterns, etc. (b) Ambient noise. The all encompassing noise associated with a given environment, usually composite of sounds from many sources. (c) Decibel (dB). Unit of measure indicating the sound pressure level of a measured sound. dBA indicates that the sound level is measured through the A-weighting network of a sound level meter. (d) Engineering noise reduction. Control of noise at the source, path or receptor site through use of acoustical engineering techniques. Among other techniques, this involves enclosures, absorbent materials, and barriers. (e) Environmental noise. The intensity, duration, and character of sounds from all sources. (f) Impulsive noise (also referred to as impulse or impact noise). Noise with abrupt onset, high intensity, short duration—typically less than one second. This type of noise can be produced by weapons fire, explosions, punch presses, and drop hammers, and consists of a short burst of acoustical energy of either a single impulse or a series of impulses. (g) Land use planning. That aspect of master planning wherein the best possible use is made of available land areas by considering, among other factors, mission and environmental protection requirements. (h) Noise control management. The abatement of noise through use of low-noise-emission products, engineering noise reduction, or administrative noise control measures. (i) Noise pollution control standards. Noise emission standards for products adopted in accordance with provisions of the Noise Control Act of 1972 or provisions of State, interstate, and local standards for control and abatement of environmental noise.
Title 32: National Defense
PART 650—ENVIRONMENTAL PROTECTION AND ENHANCEMENT (AR 200–1)
Subpart G—Environmental Noise Abatement
General
§ 650.163 Explanation of terms.
