How do you pronounce вы, as in "вы говорите пo-русски?"

When I listen to my Pimsleur audio lessons, вы sounds like 'voo' to me, but I would think that from it's spelling it would be pronounced 'vegh' or 'vi' or something to that effect; (the ы sound is hard for me to transliterate, but I've definitely learned that it is not an 'oo' sound, as seems to be the case in the Pimsleur audio pronunciation.)