Syng2 is a voice synthesizer which uses four band-pass filters to produce formants in any spectrally rich input signal, or using an internal oscillator. The phoneme can be selected on a second MIDI channel for precise timing of speech, or preset words can be triggered on a third MIDI channel.

Syng2 was designed as an intelligible, low-CPU voice engine for Breathcube 2. The articulation is intended to be more natural than other 'robot voices' using this method, with plosives slightly emphasised to be heard with music.