infrasonic


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infrasonic

[¦in·frə¦sän·ik]
(acoustics)
Pertaining to signals, equipment, or phenomena involving frequencies below the range of human hearing, hence below about 15 hertz. Also known as subsonic (deprecated usage).

infrasonic

Infrasonic refers to sound below the audible hearing range; typically under 20 Hz. Contrast with ultrasonic.
References in periodicals archive ?
Thus Atman is proposed to be an infrasonic mechanical oscillator giving out mental energy pulses of frequency 10 Hz (time-period of [10.sup.-1] sec.) 10 Hz is the frequency of this mechanical oscillator according to both western science and eastern philosophy and theory of language acquisition and communication.
The in-flow low-frequency (infrasonic) pressure fluctuations were measured over a frequency range of 0.1 Hz < f < 100 Hz for air speeds between 80 km/h and 250 km/h.
The results of our simulation and acoustic analysis suggest that more attention needs to be paid to frequencies below 40 Hz, especially the infrasonic components.
The TA network has already been shown to be a suitable platform for infrasonic source location with previous work regarding gravity wave detection and propagation.
In Having Been Held Under the Sway, I use infrasonic sinewaves--really low frequencies that one feels in the body rather than hears--as a means of articulating the physical materials of a room.
(15) Various natural and non-natural phenomena generate infrasonic waves, including rocket launches and significant explosions, including nuclear explosions.
The clinic uses a special equipment, the FDA-approved Nutational Infrasonic Liposculpture or simply called Tickle Lipo because it produces a titillating sensation during the procedure.
and Sorokin, A.G.: 1996, Infrasonic waves in the atmosphere over east Siberia.
Additionally, these chest wall and body hair vibrations have also been shown to occur in the infrasonic range (Mohr, Cole, Guild, & Vongierke, 1965; Schust, 2004).
Explaining that the birds must use the loft's infrasonic homing beacon to get their bearing before setting the direction for their return flight according to their sun compass, Hagstrum said, "I am a bit surprised that after 36 years I finally answered Bill Keeton's question to the Cornell Geology Department", adding that he is particularly pleased that he was able to use Keeton's own data to solve the mystery.
The Irish firm used infrasonic technology which allows it to effectively listen for oil.