Need a circuit: Amplitude modulated squarewave

J

jwin615

Well-known member
I have a dumb idea for a dumb circuit but need some help. Anyone have a circuit snippet that can generate a binary/squarewave 5v who's pulse frequency and perhaps pulse width is modulated based on an AC input(guitar) signal.
I.E., when you play loud, the frequency modulates faster and decreases as amplitude is reduced.
I can think of some possible ways but I feel as though it's all using more parts than needed. Maybe a MCU is the way to go?
Thanks.
Edit to add, minimum pulse duration should be in the 100-500mS/10-2Hz range.
 
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Yeah. Not sure if any of those work work for what I am after. I think the AD654 may be able to be scaled down to work, glancing at the data sheet. Looks like the pulses are 50% duty cycle. But scaling it down from 1Hz-10kHz in normal operation to1Hz-~10Hz may not be so easy. Maybe a divide by 8+ flip flop would work. Or a multibit counter like the 74HC4060
 
I could use a tapflo to flesh out the rest of the circuit though. Or, have the option to just have it tap based(vs amplitude envelope based). Good call
 
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