noise-control requirement

См. также в других словарях:

• Noise Control Act — A act which gives government agencies the right to promulgate standards and regulations relating to abatement of noise emissions, i.e., requirement that autos and like vehicles must have mufflers. Short Dictionary of (mostly American) Legal Terms …   Law dictionary

• Noise Free America — is a national, non profit organization aimed at reducing noise pollution in the community. The organization’s main target is noise from boom cars (vehicles with loud sound systems), leaf blowers, motorcycles, and car alarms.[1] Noise Free America …   Wikipedia

• Control theory — For control theory in psychology and sociology, see control theory (sociology) and Perceptual Control Theory. The concept of the feedback loop to control the dynamic behavior of the system: this is negative feedback, because the sensed value is… …   Wikipedia

• Automatic gain control — (AGC) is an adaptive system found in many electronic devices. The average output signal level is fed back to adjust the gain to an appropriate level for a range of input signal levels. For example, without AGC the sound emitted from an AM radio… …   Wikipedia

• Air Movement and Control Association — The Air Movement and Control Association International, Inc. (AMCA; pronounced Am Cah ) is a nonprofit organization that creates standards for, tests, and rates Heating, Ventilating, and Air Conditioning (HVAC) equipment. It is best known for its …   Wikipedia

• ITU-R 468 noise weighting — The ITU R 468 weighting curve (originally defined in CCIR recommendation 468) is widely used when measuring noise in audio systems, especially in the UK, Europe, and former countries of the British Empire such as Australia and South Africa. It is …   Wikipedia

• Hearing aid — Behind the ear aid In the ear aid …   Wikipedia

• ultrasonics — /ul treuh son iks/, n. (used with a sing. v.) the branch of science that deals with the effects of sound waves above human perception. [1930 35; see ULTRASONIC, ICS] * * * Vibrational or stress waves in elastic media that have a frequency above… …   Universalium

• General aviation in the United Kingdom — Infobox Aviation name=General aviation in the United Kingdom caption=Traditional general aviation fixed wing light aircraft, the most numerous class of aircraft in the sectorGeneral aviation in the United Kingdom has been defined as a civil… …   Wikipedia

• Boeing 727 — infobox Aircraft subtemplate=Infobox Boeing Aircraft name = Boeing 727 caption = Syrian Air Boeing 727 269/Adv type = Airliner national origin = United States manufacturer = Boeing Commercial Airplanes designer = first flight = February 9 1963… …   Wikipedia

• Sound level meter — Type 1 Sound Level Meter (Shown: Svantek 979) Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft… …   Wikipedia