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在脉宽调制的磁记录模拟系统中,利用载波调频方式设置调频时标,该时标在放音时被检取作为控制的同步信号,可实现放音速度的自动控制。
In the pulse width modulated magnetic recording simulation system, the carrier frequency modulation method is used to set the frequency modulation time scale, which is taken as the control synchronous signal during playback to realize the automatic control of the playback speed.