If its an Intel chipset, that it is more than likely a flavor of ADI SoundMax (1881, 1885, etc). Or it could also be an ESS chip as well. If you look on the motherboard, somewhere around the slots, if you see a smallish, square chip with a little triangle in a box, its ADI. If you see a fairly large chip, there will either be an ESS stamp or possible Creative Labs stamp on it. Most Via chipsets use a Via codec based solution (a similar small chip like the ADI).
Hope this helps! 🙂