Re: What is "sigma tel high definition audio codec" and how to use it???
Sigma Tel HD audio codec is the audio chip on the motherboard. The term "codec" often refers to some software, but in this case it refers to the type of hardware that Intel requires to work with the Intel high definition protocol. That means that whatever company makes the audio hardware has to build it to meet Intel's specifications in order to work properly.
Any hardware device in the computer also has a software driver that allows the hardware to interface with the computer, so you have a Sigmatel driver. When you open the audio properties and see controls, what you are seeing is the user interface as determined by the Sigmatel driver. If the driver is not installed then the computer will open Intel's generic HD driver that is built into Vista.
Jim Coates -- 15 years on the Dell Laptop Audio boards -- since 2/6/04