| 摘要 |
PURPOSE:To attain the high sensitive recording with good separativeness even if recording and control signals stay on the same track of an audio signal frequency band, by adding an oblique head, when recording the control signal simultaneously with the recording and reproduction of the audio signal. CONSTITUTION:The loss at an angle shift theta is infinite when Wtheta/lambda is an integer, where W is a recording track width and lambda is a wavelength of a recording signal. A signal having a fundamental frequency where the Wtheta is an integer multiple of the wavelength is separated with the audio signal by using the control signal and the recording with high sensitivity is executed. In recording the audio signal and the control signal on a magnetic tape 4, the audio signal inputted to an input terminal 11 is recorded on the magnetic tape 4 with a recording head 7 via an input amplifier 18, a resistance attenuator 19 and a recording amplifier 20, and the control signal inputted to an input terminal 9 is converted into a pulse signal having the fundamental frequency where WthetaDELTAlambda is an integer at a control signal generator 14, and recorded on the same track via a recording amplifier 15 and a control head 6. |
