A filter with opinions
Every voice gets its own resonant lowpass. The cutoff knob rides all eight at once, smoothed so sweeps sound like a hand on hardware, not a stepped parameter.
Soft plastic.
Hard sound.
The WC-1 is an eight-voice polysynth that lives right here on this page. No install, no manual. Press power, then play the A–K row like a keyboard — because it is one.
WC‑1
polyphonic · 8 voice
standby — press power
Cutoff
Release
A–K white keys · W E T Y U black keys (and O L P ; ' up top) · click, tap, or slide across the keys · drag knobs vertically, or focus them and use arrow keys
Four moods, one box
Presets that audition themselves
Tap one. It dials the panel and plays you a phrase. Powering on is handled — your click is the permission the browser needed.
Under the shell
Everything a synth needs.
Everything a synth needs.
Nothing it doesn't.
Eight voices, zero mercy
Play a ninth note and the oldest voice steps aside in thirty milliseconds — faded, stopped, disconnected. No clicks, no zombie oscillators, no leaks.
Envelopes that snap
Eight milliseconds from key to full volume, then an exponential release you set yourself — from a 50 ms tick to a two-and-a-half-second sigh.
The scope never lies
That screen up top isn't decoration. It draws the actual signal leaving the master bus, 2,048 samples at a time, sixty frames a second.
Hands-first controls
Knobs drag like the real thing — grab, pull up, hear it move. Or tab to one and nudge it with arrow keys. Both hands welcome, mouse optional.
Presets that breathe
Four starting points, each with its own demo phrase. They don't just load values — they perform them, so you hear what the panel means.
The fine print, printed large
Specifications
| Synthesis engine | Virtual-analog, single oscillator per voice, pure Web Audio |
|---|---|
| Waveforms | Sine · Triangle · Sawtooth · Square |
| Polyphony | 8 voices, oldest-note stealing |
| Filter | Resonant lowpass, 80 Hz – 12 kHz, one per voice |
| Envelope | Exponential AR · 8 ms attack · 50 ms – 2.5 s release |
| Keyboard | 1.5 octaves, C4 – F5, velocity-agnostic and proud of it |
| Oscilloscope | 2,048-point time domain, drawn at display refresh |
| Latency | Gesture to sound in under 12 ms on a decent machine |
| Install size | 0 bytes — it's already here |
| Requirements | A browser with Web Audio, and ears you trust |
One tier, your call
Pay what your ears say
No trials, no license servers, no "Pro" version hiding the good filter. Slide to whatever the last ten minutes were worth.
$49
The honest middle. Most ears land here.
Ships with all four presets, the scope, and our undying respect.