infrasoundn.
/ˈɪnfrəsaʊnd/, U.S. /ˈˌɪnfrəˈsaʊnd/ Sound, or a sound, of infrasonic frequency.
ΘΚΠ
the world > physical sensation > hearing and noise > inaudibility > [noun] > infrasound
infrasound1930
the world > matter > physics > science of sound > vibration > [noun] > below human range > instance of
infrasound1930
the world > matter > physics > science of sound > vibration > [noun] > below human range
infrasound1965
1930 A. B. Wood Textbk. Sound ii 213 The ‘ondes de bouche’ (from the mouth of the gun) consists principally of waves of very low frequency (of the order 1 p.p.s.), described by Esclangon as Infra-Sounds.
1965 Aerospace Med. 36 824/1 Very low sonic frequency noise and moderate levels of infrasound are commonly encountered in conventional aerospace operations.
1970 B. W. Aldiss Moment of Eclipse 66 This was infrasound. The plant was emitting slow air vibrations at less than ten hertz.
1971 Observer 28 Nov. 3/1 Many cars and lorries travelling at sustained high speeds produce such intense levels of low-frequency noise or ‘infrasound’ inside them that drivers can experience symptoms very similar to those produced by heavy drinking.
1971 Observer 28 Nov. 3/1 In a wide range of passenger cars travelling at motorway speeds the sound energy is largely concentrated as intense infrasounds—most of which can be felt rather than heard.
This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2022).
<
n.1930- hyperorganic
- hyperorthodox
- hyperorthodoxy
- hyperorthognathic
- hyperorthognathy
- hyperosmolality
- hyperosmolar
- hyperosmolarity
- hyperosmotic
- hyperostoses
- hyperostosis
- hyperostotic
- hyperoxaluria
- hyperoxidation
- hyperoxide
- hyperoxygenate
- hyperoxygenation
- hyperoxygenize
- hyperoxymuriate
- hyperoxymuriatic
- hyperoxymuriatic acid
- hyperoödon
- hyperpanegyric
- hyperparasite
- hyperparasites