Bats Hearing Range

Try smacking two.

Bats hearing range. Humans can hear frequencies between 20 20 000 hertz 16 000 hertz being the highest frequency that most people can distinguish. The flight path of the bat relative to the insect s position was tracked by recording the echolocation calls with two microphone arrays and calculating the bat s position from the arrival time differences of the calls at each microphone. Hearing range describes the range of frequencies that can be heard by humans or other animals though it can also refer to the range of levels the human range is commonly given as 20 to 20 000 hz although there is considerable variation between individuals especially at high frequencies and a gradual loss of sensitivity to higher frequencies with age is considered normal. The hearing range of the tettigoniid phaneropterafalcata for the echolocation calls of freely flying mouse eared bats myotis myotis was determined in the field.

The hearing of the insect was monitored using hook electrode recordings from an auditory interneuron which is as sensitive as the hearing organ for frequen cies above 16 khz. A human s hearing is maxed out at 20 kilohertz but you can still hear some form of echolocation clicks from specific bat species. The bats can also determine the size location density and movement of an object. A bat s hearing is more than seven times keener than a human s sense of hearing on the high frequency scale.

A bat on the other hand can hear frequencies between 1 000 150 000 hertz. The hearing distances ranged from 13 to 30 m. Such bat calls are typically ultrasonic and have been known to range from 20 200 kilohertz. Bats make three very distinct echo locating pulse harmonics at 90 60 and 30 kilohertz.

The echo that returns from such emissions enable the bats to pick out tiny flying insects from some distance. The sounds are emitted through the bats mouth or nostrils and are aided by a complex flap structure to provide directivity. The flight path of the bat relative to the insect s.