HD audio

(redirected from Intel High Definition Audio)
Also found in: Wikipedia.

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 ?
0 Rate Matching Hub, along with Intel High Definition Audio for premium digital sound.
The Intel[R] System Controller Hub is a ground-up, highly integrated low-power solution that features advanced low-power 3-D graphics features, hardware accelerated 720p and 1080i HD video decode capabilities, Intel High Definition Audio, and a combination of PC and handheld I/O capabilities such as PCI Express*, USB Host and Client, and SDIO.
The Intel High Definition Audio CODEC supports 2 channel, 24-bit audio with auto-sensing jack sockets.
Additionally, the new PCs support next generation hard drives and utilize Intel High Definition Audio, which delivers high fidelity sound quality for a true home theater experience.
Compliant with Intel high definition audio specification rev.
Further contributing to the entertainment experience, the 7200 series utilizes Intel High Definition Audio for high-fidelity 7.
The PhonePort family provides the most effective VoIP-enabled PC implementation by populating voice interface ICs directly on the motherboard using an Intel High Definition Audio (HD Audio) digital interface or on a PCI card for supplemental sales offerings.
1-channel output, individual channel metering and analysis, multi-channel patch bay, a DSP transport and management system (SmartSream(TM)), as well as other features optimized to support the Intel High Definition Audio specification.
C-Media, Realtek, and SigmaTel are providing Intel High Definition Audio codecs to enable PC and motherboard manufacturers with the Dolby audio capabilities to bring entertainment to life from stereo or multichannel audio sources or virtually any playback environment.
1-channel output, individual channel metering and analysis, multi-channel patch bay, DSP transport system, and other features optimized to support the Intel High Definition Audio specification.
The Dolby PC Entertainment Experience features a licensing and quality assurance program that enables systems and motherboard manufacturers to combine the power of the PC with Dolby audio technologies and expertise and an Intel Express Chipset and Intel High Definition Audio implementation to deliver solutions with richer, more engaging audio quality and surround sound capabilities.