Bitspeek is a pitch-excited linear prediction codec effect. It takes audio input, breaks it down into synthesizer parameters and reproduces the sound using an oscillator, noise and a formant filter.
Despite having only a few simple controls, this box can produce a broad range of sounds from cheap speaking toys to high-end vocoder and talkbox effects.
Bitspeek ships with a selection of Combinator patches that demonstrates the possibilities with the extra inputs and outputs.