Characteristic section
The right hand side of the body of the call.
Compressed / real time
In ‘compressed’ mode the spaces between each call pulse are removed from view. This allows more pulses to be viewed on the screen but removes information about the timing of pulses. Real time refers to displaying the calls and blank spaces between them.
Constant frequency (CF)
A call with a predominantly flat shape at a constant frequency – “pure tone” call. Bats in the genus Hipposideros and Rhinolophus make constant frequency calls, sometimes with frequency modulated components.
Continuous Recording Mode
The continuous recording mode will record continuously, starting as soon as this mode is selected, but files will only be saved if they pass the trigger settings.
Day-Only Recording Mode
Records from 90 minutes before sunrise to 90 minutes after sunset. This requires a GPS fix. Available only on Chorus and Ranger.
Detector Placement
There is a strong relationship between the quantity and quality of bat call recordings, and how the detector is deployed. The better your detector placement the more likely it is that you will record high quality data from which you can obtain reliable species identification and indices of bat activity.
Directional Microphone
A directional microphone has a specific area of detection that is shaped like a lobed or Christmas tree pattern, primarily focused in front of the microphone. This means that the microphone is designed to capture sound mainly from a specific direction or within a limited angle. While a directional microphone may have a narrower area […]
Directionality
In bat echolocation, directionality refers to the bat’s ability to focus its emitted sound in a specific direction. By controlling the directionality of their echolocation pulses, bats can concentrate the sound energy to accurately locate objects or prey. Higher-frequency calls tend to exhibit greater directionality.
Dusk & Dawn Recording Mode
Records from 90 minutes before to 90 minutes after sunrise and sunset. This requires a GPS fix. Available only on Chorus and Ranger.
Echolocation Pulse
An echolocation pulse is a specialized sound emitted by bats for navigation and locating objects. It possesses distinct characteristics like volume, frequency, directionality, and shape.