Four animal sounds were presented via headphones and a hearing threshold was determined for the high and low frequency range. In addition, the hearing threshold of each child was measured by PTA. Results were analyzed from 156 normal-hearing and hearing-impaired children, mostly above the age of...
Summary Male fruit flies sing to females with quiet, close-range wing vibrations. A new study has found that the flies' antennal ears show active tuning to... Elina,Immonen,and,... - 《Current Biology》 被引量: 0发表: 2011年 How well are FREQUENCY SENSITIVITIES OF grasshopper ears tuned...
By comparison with birds, bats have a 50% higher wing-beat frequency for a given size range, and bat flight is less variable (Bullen and McKenzie2002). If bat body mass is known, the wing-beat frequency (fw) for any bat can be estimated at low or high flight speed to within ±1.5...
These sounds range between 16 Hz and 40 Hz, well outside of a human’s normal hearing range. They also produce regular pulses and rumbles at around 20 Hz. This is one of the lowest-frequency sounds of any animal on the earth. Scientists believe the sound may be related to courtship ...
s ear.Footnote3The masking potential of ISOL depends heavily on the frequency of simultaneously produced signals. The ability to hear vocal signals will in most species have a high adaptive value, and therefore, natural selection is expected to favor sensitive hearing across the frequency range of...
Sheep have excellent hearing and can recognize the voices of individual sheep and humans! The pitch and frequency of a sheep's bleat can vary depending on breed, age, and even regional dialect! Connecting with Nature Through Sound Learning how to describe animal sounds in Englis...
One possible explanation for the large number of collisions between them and boats is a manatee’s hearing abilities. Scientist have found that they hear on a high frequency, making them unable to hear the lower frequencies emitted by many larger boats. Other human-made threats to these animals...
The fabricated ABM exhibits a clear tonotopy in an audible frequency range (2.92–12.6 kHz). Also, an animal model was used to verify the characteristics of the ABM as a front end for potential cochlear implant applications. For this, a signal processor was used to convert the ...
Dogs bark frequently and use them in a wider range of contexts than their close relatives the wolf12,13 and coyote12, and the barks seem to have evolved from the low-frequency barks of wolves, which are mainly produced during agonistic interactions14. Barks changed quantitatively and ...
Their hearing allows them to sense low-frequency rumbles, and communicate in ‘infrasounds’, which are sounds with pitches below the range of human hearing. These infrasounds are produced in the same way as humans speak, via the larynx. The frequencies are as low as the lowest notes of...