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Intel High Definition Audio (IHDA) (also called HD Audio or development codename Azalia) is a specification for the audio sub-system of personal computers. It was released by Intel in 2004 as the successor to their AC'97 PC audio standard.
Computer motherboards often provide a connector to bring microphone and headphone signals to the computer's front panel with standard color jack. Intel provides a specification for that header; the signal assignments are different for AC'97 and Intel High Definition Audio headers. [8
In 1999, Intel published a specification for mobile audio/modem daughter cards. The document defines a standard connector (AMP* 3-179397-0), mechanical elements including several form factors, and electrical interface. The 30-pin connector carries power, several audio channels and AC-Link serial data.
Intel is proposing that companies use expanded USB-C audio support to "eliminate" 3.5mm audio on mobile devices. It's not just about removing the bulk of a narrow-purpose port, either.
Professional audio interfaces often have industry-standard inputs in addition to analogue audio, in this case ADAT, TDIF, and S/PDIF. Professional sound cards are usually described as audio interfaces, and sometimes have the form of external rack-mountable units using USB, FireWire, or an optical interface, to offer sufficient data rates. The ...
AC'97 and its 2004 successor Intel High Definition Audio have been widely adopted specifications that, while not mandating physical sockets, do provide specifications for a front panel connector with pin assignments for two ports with jack detection. Front panels commonly have a stereo output socket for headphones and (slightly less commonly) a ...
The PC System Design Guide (also known as the PC-97, PC-98, PC-99, or PC 2001 specification) is a series of hardware design requirements and recommendations for IBM PC compatible personal computers, compiled by Microsoft and Intel Corporation during 1997–2001.
The Intel 8th generation processors used in this version meet the requirements for upgrading to Windows 11. [44] Dell has dropped the barrel-style connector, previously used to charge the device, as well as USB-A ports. The 9370 now includes two Thunderbolt 3, a microSD card reader, one USB-C port and one headphone jack.