Muting device

A muting device for use in magnetic recording apparatus in which magnetic recordings are produced by a magnetic head onto different portions of a relatively movable magnetic recording medium when signal currents flow through a signal path including said magnetic head, comprising:

• (a) switching means connected in the signal path of the magnetic head in series to said magnetic head so that a signal current flowing to said magnetic head can be interrupted;
• (b) release means for producing a release signal for initiating relative movement of the magnetic recording medium with respect to said magnetic head;
• and
• (c) delay control means for rendering the switching means conductive after the elapse of a predetermined time from the production of said release signal from said release means, and including a high frequency oscillator having an output for biasing said signal current flowing to the magnetic head, and the high frequency oscillator and said switching means are arranged to cooperate with each other so that during the time when the switching means interrupts the signal current flowing to the magnetic head, the high frequency oscillator ceases oscillation, and during the time when said signal current is allowed to flow to the magnetic head, the high frequency oscillator oscillates.