SOUND SIGNAL PROCESSING SYSTEM OF ROTARY HEAD TYPE MAGNETIC RECORDING AND REPRODUCING DEVICE

摘要

PURPOSE:To record and reproduce a sound signal with high fidelity by recording and reproducing a recording signal which has a predetermined constant frequency and is added by a signal for detecting frequency variation near an area where an angular modulated wave signal by a sound signal to be recorded or reproduced is present, on an from a magnetic recording medium through a rotary head. CONSTITUTION:A signal Sfd is the signal for detecting frequency variation which is set almost in a frequency area FS where two frequency-modulated wave signals FMl and FMr by the sound signal are present, and this signal Sfd has the predetermined constant frequency. The recording signal is amplified by a recording amplifier 10 and then supplied to a rotary head switching circuit 12 through the fixed contact R and movable contact (v) of a video recording changeover switch 11, and the signal is recorded on a magnetic tape T through rotary heads Ha and Hb which are selected by the rotary head switching circuit 12.