| 释义 |
pulse - duration modulation - frequency modulation pulse - duration modulation - frequency modulation[′pəls du̇¦rā·shən ‚mäj·ə‚lā·shən ′frē·kwən·sē ‚mäj·ə‚lā·shən] (communications) System in which pulse-duration-modulated subcarriers are used to frequency-modulate a second carrier. Also known as pulse-width modulation-frequency modulation. |