We think that our classroom noise levels can range from a normal conversation sound level to a rock concert! We know that scientists at the Samsung Advanced Institute of Technology are working on creating energy from sound using nano technology and piezoelectric materials. Sound is a vibration that travels in waves. The scientists there are using piezo electric zinc oxide nanowires. According to our research, they found that sound at 100 dB was applied to their nanogenerator, they created an output of 50mV in AC voltage.