Sound Meter is in the 4th set of the Smart Tools collection. Have you ever suffered from the noise of the neighbors? SPL(sound pressure level) meter app uses your embedded microphone to measure noise volume in decibels(db), and shows a reference. REMEMBER! Most smartphone microphones are aligned to human voice (300-3400Hz, 40-60dB).
Joliet, Illinois. Joliet is a vibrant city in Will and Kendall Counties in the U.S. state of Illinois, located 40 miles southwest of Chicago. It became the county seat of Will County in 1836. With a diverse population of 148,000, Joliet offers a family friendly atmosphere and a thriving business community.
A historic gold mining settlement, the town was founded in 1859 during the early days of the Pike's Peak Gold Rush. The town was named by settlers who were upset by the generous mining claims given to the earliest prospectors and promised a more equitable system for its residents. The town of Fairplay was incorporated in 1872.