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
Electronic drum module Electronic drum module An electronic drum module is an electronic or digital music device in an electronic drum kit that serves as the central processing unit and sound module. The drum module creates or produces the drum kit sounds or other sounds selected by the drummer. By itself, a drum module cannot play or sound drum beats. It only produces drum sounds when a performer strikes electronic drum pads or acoustic drum kit instruments that have electronic "triggers" (or sensors) attached to them. When the electronic drum pads or trigger-equipped instruments are struck, this sends a signal to the drum