Once expressed being an Digital signal, the signal is readily available for even more processing by electrical equipment such as electronic amplifiers and filters, and can be transmitted to some remote area by a transmitter and acquired working with radio receivers. In electrical engineering (EE) applications, signals are protected in https://enewsletters.k-state.edu/youaskedit/2020/07/14/mold-growth-in-home-canned-food/#comment-64971