free field


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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 ?
From measurements in free field conditions and near driving lane beside noise barriers (also in free field conditions), it is obvious that noise spectrum of the road has 2 peaks: at 63 Hz and 8001600 Hz frequencies.
For each given sound source location, the free field SPL measured for the applicable angle of elevation is subtracted from the ear simulator SPL measured for that sound source location to calculate a gain.
Here, we continue with the asymptotic analysis and obtain that the height fluctuations around the limit shape are given by a pullback of the Gaussian free field on the first quadrant.
TOMORROW CAERLEON: Hanbury Field (01633 422656), Free field entertainment as part of the Caerleon Arts Festival.
With the documented success of the chemical test program, it became clear that large-scale chemical treatment for roots could free field crews to focus on more preventative methods and that such a program also would prolong the life of the pipes in the collection system.
The microphone is calibrated with a Bruel & Kjaer model B& K 4133 half-inch free field mike and the microphone calibration file is on a floppy disk.
Thomas Friedman says, "I will not vote for any candidate who is not committed to dismantling Guantanamo Bay and replacing it with a free field hospital for poor Cubans.
It plans free field maintenance after a software upgrade is released.
But Cov's forwards were applying so much pressure that Park were repeatedly penalised for going offside, and the free field positions were used to good effect to set up unconverted tries for flanker Tom Johnson, down the left after a tap-and-go from Mike Walls, and prop Carl Rimmer - enjoying a superb competitive debut - for a 17-10 lead after 22 minutes.
Andrew Mayor was the fastest in the 100m butterfly, while Owen Morgan leads the 50m free field.
It was still a free field, "a neighborhood where the negative held court," a place where one could seek "a different, evil Grail.
The test results demonstrated that stone columns can be an effective technique in the remediation of liquefaction induced settlement of non-plastic silty deposits particularly under shallow foundations, or at depths of about 5 m in the free field.