The Voder effect is a bank of programmable filters that loads into the built-in effects processor of an Ensoniq EPS-16 PLUS or an ASR-10. The filters are multi-band parametric equalizers (EQs) that can be modulated in interesting ways - most notably, they can make a sound talk or sing words!

Like a classic vocoder, the Voder imposes the moving resonance of speech onto any input sound. But while the conventional vocoder uses a live vocal input to derive the control information, the Voder uses the music keyboard or MIDI.