Reduction of emission level in approach signals of Greater Mouse-Eared Bats (Myotis myotis): No evidence for a closed loop control system for intensity compensation

Raw data wav-files recorded with an onboard microphone (telemike) with was attached on the back of the bats. With this novel method it was possible to determine the sound pressure level of emitted signals and returning echoes as received by the microphone above the nose of the flying bats.