Ultramic384K: a field trial by Luca Baghino


Eduardo Romero Vivas

Recordings in Antartica

Holger and Henrike Koerber

two “Myotis myotis” social call, recorded under a church roof. (colony in church) UM250k and UM384k with Bat recorder app



Ultramic384K in a custom case

Recordings at the original speed. Please download it (right click and downalod the .wav file) and slow down to listen the ultrasound (you can use audacity to slow down the speed and to watch the spectrogram).

Barbastella barbastellus
Eptesicus serotinus (+P. kuhlii)
Hypsugo savii (+ M. myotis/oxygnathus)
Myotis daubentonii (+P. pipistrellus)
Myotis emarginatus
Myotis gr. mystacinus
Myotis myotis\oxygnathus
Myotis nattereri
Nyctalus leisleri
P. pipistrellus + P. kuhlii + H. savii + N. leisleri + N. noctula
Pipistrellus kuhlii
Pipistrellus nathusii
Pipistrellus pipistrellus
Plecotus sp
Rhinolophus euryale
Rhinolophus ferrumequinum in perch hunting
Rhinolophus hipposideros
Tadarida teniotis



“Dr. Steven Simmons has used Dodotronic 200K plug-and-play microphones to record ultrasonic vocalizations (USVs) from rats. On a single PC, he has recorded up to 8 rats simultaneously at 192-kHz sampling rate in 2+ hr sessions. Paired with RavenPro software (Cornell Laboratory of Ornithology), excellent recording and analysis performance is experienced. Dodotronic’s microphones cost a fraction of what one might procure from competing companies and perform similar to externally polarized condenser microphones. At high amplification, users may experience momentary “skips” in the streaming/recording, but even these will not obfuscate manual USV detection – a solution for this is to reduce the internal (microphone-based) amplifier and amplify via recording software. For automatic detection, users should optimize recording conditions (signal:noise) within their laboratory settings and perform comparisons with manually-scored data. In his research, Dr. Simmons and colleagues detect and analyze USVs to gain insight into affective changes occurring across the course of addiction using an experimental model of intravenous drug self-administration. A full listing of Dr. Simmons’ published works utilizing USV recordings can be found here. For more detail, please feel free to contact Dr. Simmons at”

Mark Wagstaff

Lake in South West London


WWF Mantovano, U.O. Mantova

Mike Rooke on MAC OS X

Axel Bienefeld

Holger and Henrike Koerber

two “Myotis myotis” social call, recorded under a church roof. (colony in church) UM250k and UM384k with Bat recorder app

Roberto Toffoli





Filippo Maria Buzzetti

Aeropus sibiricus Paneveggio Laghi Colbricon 27jul2012 AB calling song

Modicogryllus burdigalensis Arzignano aug12