A voice speaks "Up Left Front" through to "Down Right Back".
A test piece for periphonic rigs, functional but apologies for the recording quality (noise and some volume variation). The simple software that created the file is published, so you should easily be able to change the quality, the voice, the language ... (For the software see http://mchapman.com/amb/soft/positions/.)
To answer the criticism of 'autosuggestion' a version with "A is for Ambisonics" through to "Z is for ..." is in production.
(For the adventurous and/or supernatural user, there is a four dimensional version at http://mchapman.com/amb/hyper/.)
Grateful acknowledgements to Aaron Heller's original "Eight-Directions" (2007-05-29.7251031563).