free field


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

free field

a field (three-dimensional space) in a homogeneous, isotropic medium free from boundaries; in practice, a field in which boundary effects are negligible.

free field

A space in which there are no surfaces that reflect specific frequencies of sound.
See also: field
References in periodicals archive ?
The canal starts externally anteriorly in front of the free field and terminates behind the posterior margin of the keel.
One free field water pressure transducer (P2) to distinguish blast loads is suspended at the water depth of 4 m.
Since we would like to preserve the gradient invariance of the Lagrangian and to get Maxwell equations for the free field in the [H.sub.4] space, let us write the electromagnetic part of tensor [h.sub.ijkl] in the following way
Saberi, Dostal, Sadralodabai, Bull, and Perrott (1991) examined the detectability of a broadband click train as a function of its angular separation from a broadband Gaussian noise masker in the free field. Both horizontal and vertical separations between the signal and the masker were examined.
The pure-tone signal and the masker were presented from loudspeakers in a free field. The loudspeakers were located in the horizontal plane at the listener's ear level, and the azimuthal separation of the signal and masker loudspeakers was varied.