Erasing apparatus

摘要

The disclosed erasing apparatus is capable of erasing a signal recorded on a magnetic recording medium from individual recording tracks one by one over an erasing width wider than the width of each recording track. A magnetic head receives an erasing signal from a generating circuit that generates an erasing signal including a sustained oscillation of low frequency outside of the frequency band of a recorded or reproduced signal and a subsequent attenuating oscillation of a frequency higher than the frequency of the sustained oscillation.