Median Frequency Generator.
OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C
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The patent describes a median frequency generator which linearly adds two input signals having the same amplitude to obtain a third signal having a frequency equal to the median of the frequencies of the two input signals, an amplitude which varies with time, and a phase which reverses at a frequency equal to the difference in the frequencies of the input signals. Timing pulses are generated by a flip-flop in synchronism with the phase reveals and are used as gating signals to invert the phase reversed portions of the third signal to produce the median frequency output signal.
- Electrical and Electronic Equipment