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.
1948: The State of Israel is founded. The State of Israel was proclaimed on 14 May 1948, the culmination of nearly 2,000 years of hopes by Jewish people that they would one day return to the land from which the Romans expelled them. The Holocaust of European Jewry in the Second World War strengthened their determination.