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2. Bat detector - Wikipedia

   en.wikipedia.org/wiki/Bat_detector

   Some early bat detectors used ex-Navy low frequency radio sets, simply replacing the aerial with a microphone and pre-amplifier. It is also possible to modify a portable Long Wave radio to be a bat detector by adjusting the tuning frequencies and replacing the ferrite rod aerial with a microphone and pre-amplifier.

3. Wildlife Acoustics - Wikipedia

   en.wikipedia.org/wiki/Wildlife_Acoustics

   The bat detector records in full spectrum at 192 kHz sample rate and the files can be converted to zero-cross files in post processing. [5] The SM2BAT can record two channels simultaneously allowing a second microphone to be mounted up to 100m away from the recorder. With 4 SDHC cards the device can record about 240 nights of bat calls. [6]

4. List of bioacoustics software - Wikipedia

   en.wikipedia.org/wiki/List_of_Bioacoustics_Software

   Provides a comprehensive tool for analyzing and comparing high-resolution full-spectrum sonogram of bat echolocation calls recorded from time-expansion bat detectors. Sound Analysis Pro 2011 [9] GPL v2: Windows: Performs automated recording and analysis of animal vocalization. It can record, analyze and manage sound data over prolonged periods.

5. Bat species identification - Wikipedia

   en.wikipedia.org/wiki/Bat_species_identification

   A heterodyne bat detector simply downshifts the bat frequencies by the amount shown on the dial or the display on the more posh detectors. For instance with a hockey stick call ending at 45 kHz, this will produce a near zero end frequency when tuned to 45 kHz, If it is tuned too low, or too high, the difference frequency rises as illustrated in ...

6. Ultrasound avoidance - Wikipedia

   en.wikipedia.org/wiki/Ultrasound_avoidance

   Ultrasound avoidance is an escape or avoidance reflex displayed by certain animal species that are preyed upon by echolocating predators. [1] Ultrasound avoidance is known for several groups of insects that have independently evolved mechanisms for ultrasonic hearing.

7. Amazonian sac-winged bat - Wikipedia

   en.wikipedia.org/wiki/Amazonian_Sac-winged_Bat

   Wickham collected the holotype in Santarém along the Amazon River. [2] The species name " gymnura " is from Ancient Greek " gumnós " meaning "naked" and " ourá " meaning "tail." Thomas wrote, "the nakedness of the interfemoral [membrane] will readily distinguish this bat from any of its allies."