automatic gain control in the bat`s sonar receiver and the
... ranges. The bat’s threshold for detecting sonar echoes at a short delay of only 1.0 msec after emissions (corresponding to a range of 17 cm) was 36 dB SPL (peak to peak), but the threshold decreased to 8 dB SPL at a longer delay of 6.4 msec (a range of 1.1 m). Prior research has shown that, at even ...
... ranges. The bat’s threshold for detecting sonar echoes at a short delay of only 1.0 msec after emissions (corresponding to a range of 17 cm) was 36 dB SPL (peak to peak), but the threshold decreased to 8 dB SPL at a longer delay of 6.4 msec (a range of 1.1 m). Prior research has shown that, at even ...
Evolutionary origins of ultrasonic hearing and laryngeal
... mammals for which data were available. Correlations were investigated between high and low hearing frequency limits and also echolocation call parameters and morphological characters of the cochlea. We predicted that echolocating bat species would show specific adaptations in aspects of cochlear gro ...
... mammals for which data were available. Correlations were investigated between high and low hearing frequency limits and also echolocation call parameters and morphological characters of the cochlea. We predicted that echolocating bat species would show specific adaptations in aspects of cochlear gro ...
OTOACOUSTIC EMISSIONS AT 0.5 kHz: PROPERTIES AND
... The properties of OAE parameters such as reproducibility, response level, and signal to noise ratio in relation to different frequency bands have been investigated in several studies e.g. [11,12]. Usually it was the case that CEOAEs were not efficient at 0.5 kHz. The same property was reproduced in ...
... The properties of OAE parameters such as reproducibility, response level, and signal to noise ratio in relation to different frequency bands have been investigated in several studies e.g. [11,12]. Usually it was the case that CEOAEs were not efficient at 0.5 kHz. The same property was reproduced in ...
as PDF
... sonar). Many scientist and specialists in the field of air coupled ultrasound localisation systems have been inspired by echolocation mechanism of bats. Those mammals mastered echolocation perfectly using ultrasound waves. A resolution of so called real time biosonar is out of range of human made equ ...
... sonar). Many scientist and specialists in the field of air coupled ultrasound localisation systems have been inspired by echolocation mechanism of bats. Those mammals mastered echolocation perfectly using ultrasound waves. A resolution of so called real time biosonar is out of range of human made equ ...
How bats detect flying insects
... keep it constant (to within about 50 to window to the apex; however, in the 200 Hz) somewhere in the range of specialized region the basilar membecomes narrower, widening 81.00-85.00 kHz. The center frequen- brane again in the usual fashion from this cy of the narrowly-tuned region always region on ...
... keep it constant (to within about 50 to window to the apex; however, in the 200 Hz) somewhere in the range of specialized region the basilar membecomes narrower, widening 81.00-85.00 kHz. The center frequen- brane again in the usual fashion from this cy of the narrowly-tuned region always region on ...
Echolocation in Bats - Weizmann Institute of Science
... • In behavioral experiments, FM bats were shown to discriminate jitter in target range down to ~400 ns (less than 0.1 mm), and possibly even 10 ns. • FM bats can do object recognition, and even object classification. • FM bats can do texture discrimination (discriminate roughness of surfaces). ...
... • In behavioral experiments, FM bats were shown to discriminate jitter in target range down to ~400 ns (less than 0.1 mm), and possibly even 10 ns. • FM bats can do object recognition, and even object classification. • FM bats can do texture discrimination (discriminate roughness of surfaces). ...
Bat detector
A bat detector is a device used to detect the presence of bats by converting their echolocation ultrasound signals, as they are emitted by the bats, to audible frequencies, usually about 300 Hz to 5 kHz. There are other types of detector which record bat calls so that they can be analysed afterwards, but these are more commonly referred to by their particular function.Bats emit calls from about 12 kHz to 160 kHz, but the upper frequencies in this range are rapidly absorbed in air. Many bat detectors are limited to around 15 kHz to 125 kHz at best. Bat detectors are available commercially and also can be self-built.