Web MIDI requires browser support and HTTPS. You can always play using touch or keyboard.
fm1_web.wasm
View and change all keys and rotary controls. Changes are saved on this device.
Tap a shortcut to reassign it.
10 seconds of RUPTURE emulation measurements. No microphone, notes or audio are recorded.
Measures how smoothly the emulator runs. It does not prove that the emulation matches physical FM-1 hardware.
Import a firmware and start playing, then run the test.
No results yet.
Compare two recordings of the same firmware, patch and MIDI passage. This measures audio similarity, not chip-level accuracy. Files stay on this device.
Export both from your DAW as 16-bit PCM WAV at 44.1 kHz, without normalization. Use an identical MIDI pattern and line up their start approximately.
Choose both recordings to start. No audio is uploaded.
No comparison yet.
