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[¦ī¦bē¦ō′sē or ′ī‚bäk]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

HD Radio

(1) See also HD audio.

(2) (Hybrid Digital RADIO) Digital audio broadcasting (DAB) from iBiquity Digital Corporation, Columbia, MD (www.ibiquity.com). HD Radio provides the digital technology for AM/FM stations in the U.S, while Europe uses the Eureka DAB system for AM/FM (www.worlddab.org) as well as Digital Radio Mondiale for AM (www.drm.org). Digital radio provides an improvement in sound quality over traditional analog radio.

HD Radio simultaneously transmits a digital version of the analog broadcast and also provides a second digital channel, which can be used for alternate radio programming or data services such as song information, weather reports and car navigation updates.

In-Band On-Channel (IBOC)
HD Radio transmits the digital signals in unused portions of the same channel as the analog AM and FM signals (in-band on-channel). As a result, radios are more easily designed to pick up both signals, which is why the HD in HD Radio stands for "hybrid digital," not "high definition." HD Radios tune into the station's analog signal first and then look for a digital signal.

The European DRM system shares channels similar to HD Radio, but the European DAB system uses different frequencies for its digital transmission.

iBiquity was formed in 2000 as a merger of Lucent spin-off Lucent Digital Radio and USA Digital Radio. Lucent's progress with radio receivers was combined with USA Digital's advancements at the transmitter side, making an excellent marriage of technologies and a way to avoid a dual standard war. The original iDAB brand was changed to HD Radio in 2001, and on November 11, 2002, Detroit's WDMK was the first radio station to broadcast HD Radio. See iTunes tagging.

Real-Time Traffic Updates
Transmitting updates to a car navigation system is one type of data service that HD Radio can provide.

Real-Time Traffic Updates
Transmitting updates to a car navigation system is one type of data service that HD Radio can provide.
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References in periodicals archive ?
The experimental demonstration is being conducted in partnership with PILOT, NAB's technology coalition; and Xperi , which is providing two independent IBOC sidebands on each side of KKLZ's regularly programmed analog FM carrier.
Por su parte, el sistema estadounidense IBOC, no requiere otorgar nuevas frecuencias, permite la transicion gradual a lo digital, pero solo es valido para las emisiones terrestres y encuentra dificultades para la recepcion por equipos moviles y en el interior de los edificios.
The IBOC technology will convert current AM and FM stations from analog to digital.
It was recognized that if IBOC was to become a reality in a reasonable timeframe, there had to be some form of a grand alliance.
If the IBOC saddle-bag system is established, existing stations will be given, in effect, three times the bandwidth for which they paid, while the consuming public, which has not indicated its desires or needs, will have a technology foisted on it--especially if, as it is being currently tested in the Washington, DC, area, it will be simply another means for existing stations to replicate their analog signals.
International Bancshares Corporation (IBC) (NASDAQ: IBOC)), a multi-bank financial holding company, has said that its board of directors has declared a quarterly cash dividend of USD0.42 per share on its common stock.
The biggest takeaway is that, in addition to HD Radio growth after years of lost opportunities to Sirius XM, Pandora, Spotify, TIDAL, Apple Music and personal audio and video choices, it may finally be gaining momentum -- although some may argue that the "in-band, on-channel" (IBOC) deployment of HD Radio by scared broadcast owners some 15 years ago was a mistake, given the rise of DAB+ in the United Kingdom and some European nations.
International Bancshares Corporation (IBC) (NASDAQ: IBOC) has said that its board of directors has approved the extension of its stock repurchase program.
That's where HD Radio and the latest in broadcast technology got their close-up, with Tessera-owned DTS promoting the strengths of its in-band, on-channel minimal-interference signals — and no subscription fees, a swipe not only at Sirius XM but also at the multitude of streaming media platforms including Spotify, Apple Music and now iHeartMedia that have emerged since IBOC first came to light nearly two decades ago.