Definitions for "Ambient Noise Level"
The existing background noise level characteristic of an environment.
The level of acoustic noise existing in a room or other location, as measured with a sound level meter. It is usually measured in decibels above a reference level of 0.00002 newton per square meter in SI units, or 0.0002 dyne per square centimeter in cgs units.
The existing or inherent sound level of the area surrounding a transformer installation measured in decibels.