Incubator-based Sound Attenuation: Active Noise Control In A Simulated Clinical Environment

Area of Science:

• Neonatal care
• Acoustic engineering
• Medical device technology

Background:

• Neonatal intensive care unit (NICU) noise poses health risks to hospitalized infants.
• Current noise reduction strategies (staff training, ear coverings, single family rooms) have shown limited success.
• Infants in single family rooms are still exposed to significant device and mechanical noise.

Purpose of the Study:

• To evaluate a non-contact, incubator-based active noise control device (Neoasis™) in a simulated NICU setting.
• To determine the effectiveness of the Neoasis™ device in reducing infant noise exposure within an incubator.
• To assess the impact of the device on clinically relevant sound sequences.

Main Methods:

• A simulated NICU environment was created using bedside medical devices and hospital systems.
• An incubator equipped with a microphone-laden infant mannequin was used for testing.
• The Neoasis™ active noise control device was tested in both deactivated and activated states.

Main Results:

• The active noise control device reduced sound pressure levels by up to 14.4 dB for specific alarm sounds.
• Noise reduction was more effective at frequencies below the 2 kHz octave band.
• Background noise levels below 40 dBA were minimally affected by the device.

Conclusions:

• The Neoasis™ active noise control device effectively reduces noise levels inside infant incubators.
• Further clinical studies are needed to verify the device's safety and potential health benefits for infants.
• This technology shows promise for improving the acoustic environment for vulnerable neonates.