摘要
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 an analogue system of pulse width modulation tape recorder, frequency modulation time scale can be set up by means of frequency modulation carrier. The time scale can be detected and used as synchronous control signal during playback. Thus automatic control of playback velocity can be carried out.
出处
《山东大学学报（自然科学版）》
CSCD
1996年第4期476-479,共4页
Journal of Shandong University(Natural Science Edition)
关键词
调频时标
放音速度控制
脉宽调制
磁记录系统
tape recorder
frequency modulation time scale
playback velocity control
