... renders information that is fedinto a sender in coded form and transmitted over a channel. At the receivingend, a receiver picks up the transmitted signals, decodes them, and deliversthe information ... respective reference must be noted, for example, in theform L = 15 dB re 100 µPa. The symbol used to signify levels computed withthe above definitions is [dB], which stands for deciBel, named after Alexan-der ... ω . (1.13) For integer potencies, y = ±n with n = 1, 2, 3, ···, we arrive at slopes of±n · 6 dB/oct for sound pressure, displacement, and particle velocity, and of±n · 3 dB/oct for power and...