ITS Vibration Lab Surabaya Shows Noise Level Measuring Doll

SURABAYA - The Laboratory of Vibration and Acoustics (Vibrastics) Department of Physics Engineering Sepuluh Nopember Institute of Technology (ITS) Surabaya introduced a noise level measuring doll named Jolene.

This activity commemorates World Hearing Day in March 2022. The introduction of the Jolene doll was carried out with the Department of ENT-Head of Neck Health Sciences Universitas Airlangga (Unair), Regional General Hospital (RSUD) dr Soetomo Surabaya, Association of ENT-Head Neck Doctors (Attention- KL) North East Java Branch, and supported by the World Health Organization (WHO).

"Based on the World Report on Hearing by WHO in 2021, it is highlighted that the increasing number of people living at risk of experiencing hearing loss," said Jolene Regional Indonesia Steering Committee, Dr. dr. Nyilo Purnami was reported by Antara, Monday, March 28. According to him, this could be triggered by exposure to noise in an intensity that is beyond the recommended limit.

"Hearing loss due to noise is permanent, so preventive measures need to be taken," he said.

Efforts to prevent hearing loss can be done by adapting good listening habits, one of which is by monitoring the noise threshold.

The person in charge of the World Hearing Day Regional Indonesia, Dr. Dhany Arifianto said that by knowing the sound level around us, several actions can be taken, such as starting to limit the audio volume to using ear protection such as earplugs in noisy areas.

"Jolene is designed to read the audio level that the user hears," he said.

Dhany also explained how to use Jolene. First, the microphone placed in the ear will pick up the sound around it.

Next, the audio capture will be read by a Sound Level Meter (SLM) which is already connected to a microphone.

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The ITS Physics Engineering Department lecturer continued, the audio level in the form of a decibel value (dBA) that was read on the device, then identified a safe duration level for listening to the strength of the sound.

"Limiting the duration of exposure to noise can save long-term hearing," he said.

This safe duration can be determined through a table of national standards that includes duration and noise level. An example of the reading is that the noise level that is read at 120 dBA on the SLM is safe to listen to with a duration of no more than 10 minutes.

"The ideal volume level for listening to music itself is 60 percent of the maximum limit for 60 minutes per day," he said.

Dhany hopes that in the future Jolene can be applied in public facilities to measure noise levels in public places.

"Hopefully, with the development of Jolene in the community, public awareness of safe listening activities can increase," he said.