Some hearing milestones your child should reach in the first year of life: 1  Most newborn infants startle or jump to sudden loud noises. 2  By 3 months, a baby usually recognizes a parent's voice. 3  By 6 months, a baby can usually turn his or her eyes or head toward a sound.
(December 2008). Direct digital control (DDC) is the automated control of a condition or process by a digital device (computer). DDC is considered by many to be a more modern, granular and responsive update to older HVAC control systems based upon PLC technologies.
HDMI CEC. (HDMI Consumer Electronics Control) A control function that lets one A/V component control another if they are connected via HDMI cables. For example, inserting a disc into the DVD player would turn on the TV automatically or the A/V receiver, if part of the system. Using proprietary brand names, HDMI CEC initially worked only when components were from the same vendor. Increasingly, HDMI CEC works across vendors' products. See HDMI.