Signal original form to a waveform expressed as a current ("I") or a voltage ("V"), or an electromagnetic waveform, for example, an optical signal or radio transmission. Once expressed as an electronic signal, the signal is available for further processing by electrical devices such as electronic amplifiers and electronic filters, and can be transmitted to a remote location by electronic transmitters and received using electronic receivers. In Electrical engineering programs, a class and field of study known as "signals and systems" (S and S) is often seen as the "cut class" for EE careers, and is dreaded by some students as
Improvised Electronic Device wrote such personal lyrics, and I wasn't sure if "Front Line" was the right place for it, but I figured what the hell, it's my band." The song "Angriff" was inspired by the band's visits in Russia and "is peculiar in that the chorus is performed in German", as noted music magazine Side-Line. Leeb attributed this choice to his Austrian origin: "Actually, since I was born and raised in Vienna, Austria, German was always my first language, it only seemed natural to eventually reclaim my heritage and do a song in my mother tongue." Leeb described "Improvised Electronic Device" as