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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.
High-resolution audio (high-definition audio or HD audio) is a term for audio files with greater than 44.1 kHz sample rate or higher than 16-bit audio bit depth. It commonly refers to 96 or 192 kHz sample rates. However, 44.1 kHz/24-bit, 48 kHz/24-bit and 88.2 kHz/24-bit recordings also exist that are labeled HD audio.
In 2004, Intel released Intel High Definition Audio (HD Audio) which is a successor that is not backward compatible with AC'97. [2] HD Audio has the capability to define up to 15 output channels, but in practice most motherboards provide no more than 8 channels (7.1 surround sound).
Intel: Intel High Definition Audio (IHDA) 2004 8 32 192,000 IBM Personal Computer, IBM PC compatible computers [104] Konami: Konami K007232 1986 2 8 32,000 Konami Bubble System and Twin 16 arcade boards PCM Konami K053260 1990 4 12 32,000 Konami TMNT based arcade board KDSC Konami K054539 1991 8 16 32,000
Integrated Intel HD Graphics (Gen7) GPU; PCI Express 2.0 controller with four lanes and four root ports; Two SATA-300 ports; One USB 3.0 controller supporting one USB 3.0 port (can be multiplexed to support four USB 2.0 ports) One USB 2.0 controller supporting four ports; Integrated LPE and HD audio controllers
Audio: Intel HD Audio [7] Optical drive: 16x Dual Layer DVD reader/writer [7] USB ports: ten USB 2.0 ports [7] Operating System: Windows XP Professional [7] It was described by About.com as being "a very solid system for business users" and a "general purpose PC" for consumers. [7] However, both multimedia performance and storage space were ...
Three classes of audio devices are supported by default: USB, IEEE 1394 , and Intel High Definition Audio, which supports PCI and PCI Express. Starting with Windows Vista, Microsoft requires all computer and audio device manufacturers to support Universal Audio Architecture in order to pass Windows Logo certification.
However, these features were dropped when AC'97 was superseded by Intel's HD Audio standard, which was released in 2004, again specified the use of a codec chip, and slowly gained acceptance. As of 2011, most motherboards have returned to using a codec chip, albeit an HD Audio compatible one, and the requirement for Sound Blaster compatibility ...