.xx#
Type of zero crossing analysis file, typically one pass per file, recorded on legacy detectors
.zc
Type of zero crossing analysis file, typically one pass per file
.zca
Type of zero crossing analysis file, one file per night, recorded on an Express
AC
Zero Crossing, see Zero Crossing
Acronyms
Active Survey
An active survey involves monitoring bats while you are present (stationary/walking/driving) while you receive some real-time output (visual or auditory) from the detector. (advantages and disadvantages chart)
Alternation
Where the characteristic frequency of the pulse alternates between pulses. Typical of some bat genera (eg. Chalinolobus spp.)
Amplitude
Refers to the volume or loudness of a call; e.g. ‘maximum amplitude’ means ‘loudest’.
Atmospheric attenuation
Atmospheric attenuation is the reduction in sound intensity as it travels through the atmosphere. Factors like distance, humidity, temperature, and air pressure contribute to the gradual weakening of sound waves.
Bandwidth
The total frequency spread of the call from maximum (Fmax) to minimum frequency (Fmin); refers to the dominant harmonic when multiple harmonics present.