Young inventors create device that converts noise to electricity

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Excerpt
A group of students from the Philippine Science High School-Western Visayas Campus (PSHS-WVC) has created a device that converts noise to electricity.
The Sound – Light or “S-Light” was created by “Team Voltage 5” composed of Grade 11 students Kirsten Dianne Delmo, Nico Andrei Serrato, Joecile Faith Monana, Frelean Faith Engallado, and Raphael Francis Dequilla.
While electricity is normally used to power up speakers, this invention reverses that process and uses sound and converts it to electricity.