Alan writes BillaBoop is a real-time audio driven drum controller. It was created by Amaury Hazan who is a PhD Student at the Music Technology Group and is specialized in Machine Learning and its applications in the Music Technology field –

BillaBoop is a real-time audio driven drum controller which allows the user to control up to 3 drum instruments. The user can control any drum synth with the voice (beat box), or any object or musical instrument.

Unlike other audio-driven systems wich require a lot of parameter tuning to be able to discriminate the sounds you are playing, BillaBoop incorporates an efficient Machine Learning component which enables the system to learn by demonstration. In a few seconds you show the system what are the sounds you aim to use and you can start using them.

BillaBoop – [via] Link.

*I don’t see any downloads/how-tos, etc – but it does look interesting.