reference level

reference level

[′ref·rəns ‚lev·əl]

(engineering)

datum plane

(engineering acoustics)

The level used as a basis of comparison when designating the level of an audio-frequency signal in decibels or volume units. Also known as reference signal level.

(oceanography)

Level of no motion.

A level for which current is known; allows determination of absolute current from relative current.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.