Sidhika Balachandar, 13, designed a set of experiments to determine the best material for soundproofing her mother’s home office. Balachandar put a speaker in a cardboard box, wrapped in various materials and measured the volume outside of the box with a sound meter.
She wanted to see if a decorative material could work as well as professional-grade soundproofing material, so her mother’s office could be soundproof, but still look nice. She found that soundproofing roof tile worked best, but was closely followed by a double layer of tapestry.
Balachandar’s future career interest is the following: engineering.