rajaramaniyer github io

Web Harmonium

A free, browser-based digital harmonium simulator that replicates the sound and feel of a traditional Indian harmonium. No download required — open and play instantly.

Features

Browser-based : Works directly in your browser, no installation needed

MIDI Keyboard Support : Connect your MIDI keyboard and play with realistic key-by-key interaction

Volume Control : Adjustable master volume

Reverb Effect : Built-in reverb for rich, ambient sound

Transpose : Transpose keys to any musical key (C, D, E, etc.)

Octave Adjustment : Control the octave range from -3 to +3

Additional Reeds : Layer multiple reed sounds for a fuller tone

Keyboard Playable : Play using your computer keyboard as an alternative to mouse clicks

Use Cases

Music practice and learning

Composing Indian classical or devotional music

Performing live without carrying a physical instrument

Music teachers demonstrating harmonium techniques

Casual music exploration in the browser

Technical Details

Built with the Web Audio API for real-time audio synthesis. Fully responsive and works on desktop browsers. Free forever — no account needed.