§ 9-101. Definitions.

(a) In general.

In this title, the following terms have the meanings indicated.

(b) Impulse sound.

"Impulse sound" means a short burst of acoustical energy such as that produced by weapons fire, a punch press, or a drop hammer. A pressure time history of a single impulse includes a rapid rise to a maximum peak pressure followed by a somewhat slower decay, both occurring within 1 second.

(c) Motor vehicle.

"Motor vehicle" has the meaning stated in § 11-135 of the State Transportation Article {"Maryland Vehicle Law"}.

(d) Noise.

"Noise" means any steady-state or impulse sound that occurs on either a continuous or intermittent basis.

(e) Peak pressure.

"Peak pressure" is the sound level in decibels of an impulse sound measured with sound instrumentation that uses the flat response or linear scale.

(f) Steady-state sound.

"Steady-state sound" means a periodic or random variation, with a duration of more than 1 second, in atmospheric pressure at audible frequencies.