For Hobbyists & Makers · AM / FM Modulation
AM / FM Modulation for a rectifier
Built for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker. Simulate a rectifier live below — adjust the inputs and watch it respond, right in your browser.
AM / FM ModulationLive
how radio carries sound
Controls
Presets
Radio hides a low-frequency message inside a high-frequency carrier. AM varies the carrier's amplitude with the message; FM varies its frequency. FM resists noise better, which is why music stations use it. Educational tool.
Data Inspector
ModeAmplitude (AM)
Carrier / message20 / 2
Modulation index0.70
Modulation depth70%
Governing equation
Reading this result: AM varies the carrier's amplitude with the 2 Hz message at 70% depth. The envelope stays positive, so a simple envelope detector recovers the message cleanly. The 20 Hz carrier is far above the message so the two separate at the receiver.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
More with AM / FM Modulation
Frequently asked questions
- Is this good for hobbyists & makers?
- Yes — this version of "AM / FM Modulation for a rectifier" is framed for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.