The property of a sound signal by virtue of which a listener can estimate the direction of the location of the signal.
Related Terms |
ACOUSTIC
A term pertaining to sound, or the science of sound.
|
GYRO ERROR
The error in the reading of the gyrocompass, expressed in degrees east or west to indicate the direction in which the axis of the compass is offset from true north.
|
GRID MAGNETIC ANGLE
Angular difference in direction between grid north and magnetic north. It is measured east or west from grid north. Grid magnetic angle is sometimes called GRID VARIATION or GRIVATION.
|
GRID TRACK
The direction of the track relative to grid north
|
GROUND LOG
A device for determining the course and speed over the ground in shallow water consisting of a lead or weight attached to a line. The lead is thrown overboard and allowed to rest on the bottom. The course over ground is indicated by the direction the line tends and the speed by the amount of line paid out in a unit of time.
|
HELIOCENTRIC PARALLAX
The difference in the apparent direction or positions of a celestial body outside the solar system, as observed from the earth and sun. Also called STELLAR PARALLAX, ANNUAL PARALLAX
|
HARMONIC
1. A sinusoidal quantity having a frequency that is an integral multiple of the frequency of a periodic quantity to which it is related. 2. A signal having a frequency which is an integral multiple of the fundamental frequency.
|
AMBIENT NOISE
The normal sound in a room or other location.
|
AXIAL-LOAD BEARING
A bearing in which the load acts in the direction of the axis of rotation.
|
AIRBORNE SOUND
Sound which reaches the point of interest by radiation through the air.
|
