[DOC] [TLE] Perception of Infrasound - Wikipedia [PAR] Infrasound is an anthropocentric term that refers to sounds containing some or all 
energy at frequencies lower than the low frequency end of human hearing 
threshold at 20 Hz. It is known, however, that humans can perceive sounds below 
this frequency at very high pressure ... If an animal produces a low frequency 
sound, and uses it in communication,... [DOC] [TLE] The Sounds of Africa: What Elephants Hear | Wayne Staab, PhD ... [PAR] Oct 10, 2012 ... How animals hear and communicate is an interesting topic. ... The hearing range 
of the elephant is reported in the low frequencies ... if their frequency is less than 
20 Hz (the lower limit of human hearing). ... She suspected these were infrasonic. 
... Under normal conditions, infrasound allows elephants to... [DOC] [TLE] Infrasound - Cornell University [PAR] The spectrogram below shows some classic rumble vocalizations by forest 
elephants. ... The blue line near the bottom is the lower limit of human hearing 
sensitivity. ... The discovery that elephants use infrasound in communication led 
from a ... These sounds were computer-generated and the images show you the 
wave... [DOC] [TLE] Scientists unravel the secret world of elephant communication [PAR] May 23, 2005 ... Scientists have long known that seismic communication is common in small ... 
seems to enable elephants to focus their keen senses of smell and hearing ... 
also transmit vibrational signals through the groundlong-distance seismic ... at 
a waterhole in Etosha demonstrating that these powerful infrasonic... [DOC] [TLE] Looking for earth-shaking clues to elephant communication [PAR] Jun 1, 2005 ... Scientists have long known that seismic communication is common in ... "A lot of 
research has been done showing that small animals use seismic signals to find 
mates, ... Joining them in Namibia were four colleagues with a wide range of ... a 
waterhole in Etosha demonstrating that these powerful infrasonic... [DOC] [TLE] Facts About African Elephants | The Maryland Zoo in Baltimore [PAR] Click the sections below to explore different fascinating facts about elephants ... 
The African elephant (Loxodonta africana) is the largest land animal in the world 
.... It is below the range of sound that the human ear can detect. ... Special 
adaptations in each of these parts of the body pick up and transmit sounds to the 
hearing... [DOC] [TLE] Behavior and Social Interaction in a Wet World, part II: Whale ... [PAR] Aug 4, 2013 ... These neurons, which are associated in humans with various cognitive ... 
regarded as a major evolutionary roadblock in the development of intelligence, 
one that is assumed to have arisen convergently in cetaceans, pachyderms and 
primates. .... sounds that are well below the human range of hearing. [DOC] [TLE] Effects of military noise on wildlife: a literature review [PAR] Vehicle noise can interfere with animal communication essential for reproduction. 
... Military and civilian blast noise had no unusual effects (beyond other human-
generated noise) on wildlife in most studies, although hearing damage was not 
an issue ..... biologically-meaningful infrasound signals by infrasonic military 
noise. [DOC] [TLE] Facts Sheet - EAGLE Network - Eco Activists for Governance and ... [PAR] These criminal networks, operating through sophisticated chains of ... Achim 
Steiner, UN Under Secretary General and UNEP Executive Director ... alongside 
arms, drugs and human trafficking as the largest criminal transnational activities. 
...... The low frequency, or infrasound, allows elephants to communicate across 
miles. [DOC] [TLE] Towards an Automated Acoustic Detection System for Free ... - NCBI [PAR] Keywords: Human-elephant conflict, wildlife monitoring, Loxodonta africana, 
automated ... and Loxodonta cyclotis) elephants are the largest terrestrial 
herbivores. .... automated detection of elephant vocalizations under natural field 
conditions. ... The rumble is a harmonic sound with a fundamental frequency in 
the range of... [DOC] [TLE] Elephant - New World Encyclopedia [PAR] Feb 18, 2016 ... Above, an Indian elephant; below, an African elephant cow suckled ... For 
humans, partially domesticated elephants have been used for ..... The largest 
areas in the elephant brain are those responsible for hearing ... Pioneering 
research in elephant infrasound communication was ..... Pachyderm 38: 19-28

Question: These largest pachyderms communicate with infrasonic signals below the range of human hearing
Answer: Elephants