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.
Montreal got its start way back in 1642, at a time when New York was still New Amsterdam and Philadelphia was still decades from existing. Initially called Ville-Marie, Montreal was established at Pointe-a-Ã , calliere calliÃ¨re Where. The St lawrence river met what was Then The. petite riviere riviÃ¨re