Tried googling a bit and it appears he worked on DirectX audio API.
Todor J. Fay (no relation to Todd Fay) drove the vision and design of DirectMusic at Microsoft and ultimately managed DirectX Audio API development. An industry expert, Todor is passionately dedicated to bridging the worlds of art and technology. After leaving Microsoft, Todor co-founded NewBlue Inc., an interactive technologies developer and consultancy.
DirectX Audio Exposed: Interactive Audio Development
