The purpose of this activity is to compare the loudness of the sounds you hear at your house. 1. Ask your parents for permission to download a free sound level meter. I downloaded NOSH. 2. Go around your house and measure different sounds. 3. Record a list of the sounds and the decibels. 4. Create a chart or picture to show your results. 5. a summary of this activity. Which sound was the softest? Which sound was the loudest?