-
Infrasound,
sometimes referred to as low
frequency sound or
incorrectly subsonic (subsonic
being a
descriptor for "less than the
speed of
sound"), describes...
-
Sound waves below 20 Hz are
known as
infrasound.
Different animal species have
varying hearing ranges,
allowing some to even hear ultrasounds.
Sound is...
-
raising the
frequency from
infrasound to a more
audible and
reproducible range. The
following previously unidentified sounds have been
detected by the...
-
including animal attacks, hypothermia, an avalanche,
katabatic winds,
infrasound-induced panic,
military involvement, or some
combination of
these factors...
- was
generating infrasound of 18.9 Hz, 0.3 Hz, and 9 Hz. A long-range
acoustic device (LRAD)
produces a 30
degree cone of
audible sound in frequencies...
-
Infrasound is
sound at
frequencies lower than the low
frequency end of
human hearing threshold at 20 Hz. It is known, however, that
humans can perceive...
- engineer. He was
known best for his
research into the
relationship between infrasound and
ghostly apparitions.
During 2001
Tandy was
asked to
investigate the...
- and the
Federal Theater Project. Burris-Meyer
pioneered the use of "
infrasound (
sound with a
frequency below the
lower limit of
human audibility)" in theater...
-
resistant to
disease and epidemics,
think faster, can
detect ultra- and
infra-
sounds and have a long life expectancy.
Black Prophecy was action-oriented,...
-
genre conventions. In a
study by
Medes et al.,
prolonged exposure to
infrasound and low-frequency
noise (<500 Hz) in long
durations has an
effect on vocal...
