Results: Our results confirm a protective effect of the incubator from noises above 500 Hz in conditions of “no-flow” and show almost no protective effect of an incubator cover. To understand the dynamics of sounds around and within the incubator, the following stimuli were used: broadband noise with decreasing sound level in 10 steps of 6 dB, sine waves (62.5, 125, 250, 500, 1000, 2000, 4000, 8000, and 16,000 Hz), logarithmic sweep (Chirp) over the frequency band 20 Hz to 21 kHz, singing male voice, singing, and whispering female voice. They contained recorded music, speech, and synthesized sounds. Methods: Audio recordings within an incubator were conducted at the Pediatric Simulation Center of the Medical University Vienna. The aim of this study was, first, to precisely define the dynamics of sounds within an incubator and, second, to give clinicians and caregivers an idea about what can be heard “inside the box.” Several studies have documented that the sound level within a NICU exceeds the recommended threshold by far, possibly related to hearing loss thereafter. Also, the listening experience of a neonate drastically differs from that of an adult. 3Department of Pediatrics and Adolescent Medicine, Division of Neonatology, Pediatric Intensive Care and Neuropediatrics, Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austriaīackground: The intrauterine hearing experience differs from the extrauterine hearing exposure within a neonatal intensive care unit (NICU) setting.2Musicological Department, University of Vienna, Vienna, Austria.1Department of Music Physiology, University of Music and Performing Arts Vienna, Vienna, Austria. Matthias Bertsch 1*, Christoph Reuter 2, Isabella Czedik-Eysenberg 2, Angelika Berger 3, Monika Olischar 3, Lisa Bartha-Doering 3 and Vito Giordano 3
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