HD audio


Also found in: Dictionary, Thesaurus, Medical.
Related to HD audio: HD Radio, HD music

HD audio

(1) See also HD Radio.

(2) (High Definition audio) Higher-quality digital music formats. See high-resolution audio.

(3) (High Definition audio) The latest digital surround sound formats supported by Blu-ray, such as Dolby Digital Plus, Dolby TrueHD and DTS-HD (see Dolby Digital and DTS).

(4) (High Definition Audio) A specification for audio and modem circuits on a PC motherboard. Introduced in 2004 by Intel and superseding AC'97, HD Audio provides eight channels (7.1) of 32-bit, 192 kHz audio for Dolby Digital and DTS surround sound. It allows the same port to be used for speaker or microphone (automatic jack retasking), and it supports multiple listening zones.

HD Audio Link
Like AC'97, HD Audio comprises a controller connected to analog/digital codecs by a 5-wire TDM interface called "HD Audio Link." The two subsystems separate the digital controller, which is built into the PC chipset, from the analog circuits, which can be in a chip on the motherboard or interchangeable riser card, the latter often used for international modem certification (homologation). See AC'97 and riser card.
References in periodicals archive ?
Voice and video conferencing is still one of the most common uses of HD audio today.
We expect HD Audio to become a commonplace in the contact center industry in next two to three years, when HD Audio is successfully adopted at all stages of a telecommunication channel between customers and contact centers.
Panasonic's 67HD Visual Communications System boasts Full HD video and 360-degree, full-duplex HD audio. Full HD images can be displayed on a wide range of HD monitors, from desktop LCDs all the way up to a 152-inch class HD Plasma display or even projected with an HD projector on a large screen at a conference or an educational institution.
CEVA's IP portfolio includes comprehensive technologies for cellular baseband (2G / 3G / 4G), multimedia, HD audio, voice over packet (VoP), Bluetooth, Serial Attached SCSI (SAS) and Serial ATA (SATA).
Many LEC softswitches already support these HD audio codecs, so you may already have the capability to begin offering HD Voice with call quality as high as 48 kHz.
The product supports up to 4 GB of DDR3 SDRAM, six GigaLAN ports, four SATA interfaces, eight USB 2.0 ports, and embedded HD audio. The device servers network servers running intrusion detection systems, unified threat management, anti-virus.
The Fit-PC 2.0, a small form factor computer intended for desktop usage, is powered by the Intel Atom processor and has 1GB DDR2 RAM, a 160GB hard drive, multiple USB ports, HD audio and video, Gigabyte LAN and optional Wi-Fi connectivity.
"HD Audio" is the new buzz phrase from the Consumer Electronics Association.
The compact, transportable 5-TB eSATA Platinum RAID Pro solution is built around a 64-bit Intel XScale processor matched with 128 MB of error-correcting cache, to handle intensive SMB RAID applications including digital video, HD audio, digital imaging and streaming backup.
InterVideo software serves as the enabler for Intel's HD Audio technology, delivering an in-depth PC listening experience that rivals home theater systems.
They have support for Qualcomm's aptX HD audio codec, which delivers high-definition audio at 576 kilobits per second.
The GXV3370 supports open SIP standards, offers HD audio, an intuitive user interface, advanced SDK/API for custom application development and is fully interoperable with nearly all major SIP voice and video platforms.