Home Devices the sound compressor and экспандер carry auxiliary function and serve for management of attack of a sound and its attenuation. The role of the tape recorder which carries out simultaneously functions and some kind of the performing tool and an intermediate link in processing of a sound material is absolutely unusual in electronic music. Приeмов and ways of such processing set. Here only one of the elementary: the ring from a recorder tape соотносимо with приeмом "остинато" in traditional music, but in the new technics "остинато" can represent not only any phrase or repetition of one sound, but also separate area of a timbre, or one phrase of such timbre. Return reproduction of a sound is widely applied. This приeм is one of the elementary ways of processing of a timbre who rather considerably changes its "shape".