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A comment on Notes on Resonance.

Re:Notes on Resonance by CGamesPlay on Saturday April 14, 2018 @12:02PM (#16837881)
In what physical context do we multiply signals together instead of adding them?
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Re:Notes on Resonance by lowleveldrone on Saturday April 14, 2018 @12:07PM (#16837916)
In a radio, this is done by a mixer circuit, for instance https://en.wikipedia.org/wiki/Gilbert_cell
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Re:Notes on Resonance by gugagore on Saturday April 14, 2018 @01:33PM (#16838342)
You know AM radio? That's Amplitude Modulation. Modulation here means "multiply your audio signal by a carrier signal".
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