| 摘要 |
The system comprises a free equalizer (103) synchronized with the signal of the drum head (1); a ATP pilot signal detection filter for detection of ATP signal from the output of the equalizer; an edge detection circuit for edge detection of the output signal; a counter (108) for counting the number of the edge detection circuit output; a latch circuit part (109); a PWM encoder (110) for modulation of the latch output; a low pass filter (111) for the output of PWM encoder; and a motor drive circuit (112) for driving of the drum motor (101).
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