In China's Yunnan province, local farmers have drastically expanded planting areas, turning large tracts of continuous forest into discontinuous patches. Habitat fragmentation has led to a lack of food for elephants, which have entered villages in search of food, leading to human-elephant conflict.

In this sound media project, I want to use an early warning device to alert humans about the presence of elephants in advance. This will allow us to take safety measures beforehand and reduce conflicts between humans and elephants. I have placed an Arduino device every 200 meters in an area ranging from 500 to 1000 meters away from the village. These devices are used to monitor elephant sounds near the village. The Arduino is a device designed to listen for elephant sounds, and each Arduino can detect elephant sounds within a 200-meter radius, which is an effective reception range for such sounds.

When an Arduino detects an elephant sound reaching approximately 110 decibels, it will activate a loudspeaker connected to the village to alert the residents about the elephant's arrival. Since elephants have highly sensitive hearing, the alarm will emit a sound of about 60 decibels, which is enough to notify people in the vicinity without scaring the elephants. To ensure adequate coverage, we need to install a warning device every 20 meters in the field so that everyone in the area can receive the alert.