The knees of the dinos bend at the right places and the head and neck movements are just, wait let me pull out my thesaurus, astonishing Like the graphics, the sound in Trespasser is very good. As I first found myself on the island I started to walk around and heard my footsteps 'swishing' in the water and almost silent on the beach. The sounds are almost as dynamic as the textures, in that they change in almost every area you visit, however, unlike the textures which are recreated via the CPU every time, there is a limit to how many there are. I played the game with my SoundBlaster AWE64 and found the sounds to be quite realistic and the quality was perfect as well. This means that even truly non-audio users such as myself can experience Direct Sound 3D, at least, which is not that bad at all.
Trespasser takes full advantage of the features and extensions of both cards.
The people who I have talked to say that the support is very effective. The famous beach that I have described earlier sounds very real from the back speakers. Footsteps through various areas are carried through the front speakers. As you move your head down, the audio is truly positional, the sound increases in the front speakers because your ears are closer to the ground. Shooting the gun gives a very loud echo almost as if it actually went off in your room and your ears are ringing.