A tape recorder is a device for recording sounds on tape. Bands can be roll or cassette. Tape the name was originally a trademark of AEG (Telefunken) and IG Farben and the only designated recorders. This term has passed into everyday language, becoming a kind of common name. The idea is to polarize with an electromagnet (solenoid), magnetic metal particles in a flexible tape, running at constant speed on the tête.l was widely used by audio professionals (the tape to the most efficient simultaneously process many tracks, allowing to change the sound balance in the mixing phase), and in vogue at the general public in the years 1940 to 1990 for its portability."

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