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.
Louis Jolliet, Jolliet also spelled Joliet (born before Sept. 21, 1645, probably BeauprÃ©, near Quebecâdied after May 1700, Quebec province), French Canadian explorer and cartographer who, with Father Jacques Marquette, was the first white man to traverse the Mississippi River from its confluence with the Wisconsin to the mouth of the Arkansas River ...