Noise Compensation (If equipped)
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
A microphone mounted in the vehicle passenger compartment monitors background noise (such as wind noise from a window being open). The audio system uses this signal and digitally modifies volume and equalization settings to ensure optimal sound and performance.