URL:
openpipes.org
1 comments
I built a browser-based virtual pipe organ that loads SF2 soundfonts and renders a realistic organ console interface.
Features:
- Loads SoundFont2 organ samples directly in the browser (using smplr library)
- MIDI keyboard support (multiple devices can control different manuals)
- Realistic draw-stop knobs with pull-out animation
- Expression pedals with 3D tilt effect for volume control
- Convolution reverb for cathedral acoustics
- Computer keyboard fallback (two-manual mapping)
Tech stack: TypeScript, Vite, Web Audio API, WebMIDI
The UI mimics a real organ console with stop jambs on either side and stacked manuals in the center. Stops are distributed in a zigzag pattern like traditional pipe organs.
Currently ships with a smaller soundfont (~22MB) while I figure out efficient ways to stream larger organ samples. The challenge is that quality pipe organ samples can be 1-2GB+.
Live demo: [URL]
Source: [GitHub URL]
Would love feedback on the audio latency and UI. Planning to add: pedalboard, couplers, and possibly IndexedDB caching for larger soundfonts.