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

Sounds that are below the audible hearing range; typically below 10 or 20 Hz. Contrast with ultrasonic.
References in periodicals archive ?
It was not possible, however, to demonstrate empirically the presence of infrasonics within Camster Round, or to test further the effects of drumming upon people.
For the fiscal year ended June 30, 1995, Infrasonics reported revenue of $23 million.
Infrasonics manufactures the industry's most comprehensive line of advanced neonatal, pediatric and adult ventilation (respiratory) products, as well as specialized infant incubators, and more than one hundred respiratory accessories for use in hospitals and the home in almost one hundred countries.
9 million associated with the company's first quarter and fourth quarter mergers with Puritan-Bennett and Infrasonics, respectively.
will be assisting both Nellcor Puritan Bennett and Infrasonics with the solicitation of proxies.
The addition of the Infrasonics infant and high frequency ventilator products fills a gap in a key area of the Nellcor Puritan Bennett product line," said C.
CONTACT: Jim Hitchin of Infrasonics, 619-450-9898, ext.
SAN DIEGO, July 19 /PRNewswire/ -- Infrasonics (Nasdaq: IFRA) announced today that sales for the fourth quarter just ended increased 35% to $7,331,300 compared to $5,426,000 for the quarter ended March 31, 1995.
SAN DIEGO, June 15 /PRNewswire/ -- Infrasonics (Nasdaq: IFRA) announced today that it has entered into a supplier agreement with Direct Medical Equipment & Supplies Inc.
SAN DIEGO, April 18 /PRNewswire/ -- Infrasonics (Nasdaq-NNM: IFRA) announced today that for the third quarter just ended, sales increased to $5,426,000 compared to $5,310,800 for the same period in 1994.
March 28 /PRNewswire/ -- Infrasonics (Nasdaq-OTC: IFRA) announced today that it has received U.
SAN DIEGO, March 7 /PRNewswire/ -- Infrasonics (Nasdaq-NNM: IFRA) announced today that it has received an Investigational Device Exemption (IDE) from the U.