Digital radio

• Satellitradio
  • DSat (Eureka 147 DAB System-baseret)
• Digitalt kabel
• Internetradio f.eks.:
  • Quicktime Player.
  • Microsoft Media Player.
  • Real Player.
• Digital Radio Mondiale (DRM) på:
  • Langbølgebåndet.
  • Mellembølgebåndet.
  • Kortbølgebåndet.
• Digital Audio Broadcast (DAB)
  • DAB-T (T=Terrestrial, terrestrisk, DK). Jordbaseret- maste-sendenet (i modsætning til DAB-S(atellite). Forkortet DAB-T, T-DAB eller i daglig tale blot DAB. Europæisk standard, dvs. Eureka 147 DAB Systemet, er ikke kompatibelt med iDAB, (USA-standard):
    • VHF, TV bånd III, kanal 12C, 217,5 - 230,0 MHz (Danmarks Radio).
    • UHF, L-bånd, 1.452 - 1.492 MHz (dette frekvensbånd er ikke taget i brug - 2003).
  • iDAB. iBiquity Digital Corp: In-Band On-Channel DAB, IBOC DAB = HD Radio. FM bagud kompatibelt til sending på FM-båndet. iDAB er USA-standard og er ikke kompatibel med DAB-T (juni 2004) - tjek det før du køber DAB-radio i USA til brug i EU.
  • DVB-T (V=Video) (også kaldet DTT) - kan sammen med tv-kanalerne også indeholde en eller flere radiokanaler. Radio sendt på DVB er ikke kompatibel med DAB (juni 2004). En simpel DVB-decoder/modtager alene kan altså ikke modtage DAB. Men 24. maj 2004 kom den første DVB/DAB-decoder samlet i en enkelt chip, så der er måske lys forude. DVB-T er i Danmark planlagt til at gå i luften på hovedstationerne i 2005.

Table of contents

1 Se også 2 Eksterne henvisninger 2.1 Eureka 147 DAB System 2.2 iBiquity Digital Corp: IBOC DAB, HD Radio 2.3 Blandet DAB

Se også

• Radiofoni, radio, radiomodtager, fjernsynsmodtager, forforstærker, Digital Radio Mondiale.

Eureka 147 DAB System

• Nyheder:
  • Google News: "Eureka 147"
  • Google News: DAB radio
  • Google News: "Digital Audio Broadcast"
• Norden, DR:
  • Nordini: Nordic Radio Digital Initiative
  • DR Digital radio, Hvad er digital radio
• Blandet:
  • BBC: Digital Radio -- The Eureka 147 DAB System
  • DAB and Digital Satellite Radio Links
  • RadioWorks DAB Guide - How Does Digital Audio Broadcasting Work?
  • ePanorama: Digital Audio Broadcast (DAB)
  • oneradiodab.com
• Evalueringer:
  • 12 November 2002, BBC Admit DAB Sounds Worse Than FM (from What Hi-Fi magazine) Citat: "...However, she admitted that the BBC has been altering bit-rates. Some Radio 3 transmissions have been reduced to 160Kbps from the usual rate of 192Kbps, while Radio 4 broadcasts have been cut to 128Kbps, and even 80Kbps mono at times. ?We did change the bit-rate of transmissions to accommodate five new services this year,? said Fox. ?We have to strike a balance between improved programming choice and sound quality.?..."
  • Article about DAB's Audio Quality by Dr David Robinson (PDF)
  • The World DAB Forum Web Site
• Anvendelser:
  • Nordini: Digitale radioapparater
  • DAB Receivers
  • Receivers for DAB. Last Update: March 30th, 2003 - med billeder
  • Pertel DR201 DAB Digital Radio with MP3 Player
  • World DAB: DAB Receiver oversigt (aktuel)

• Nyheder:
  • Google News: "HD Radio"
  • Google News: "IBOC"
• Blandet:
  • 01.14.03, Digital Radio Debuts Citat: "...HD Radio (The HD apparently stands for high definition, as in HDTV), used to be known as IBOC, and is the brainchild of Ibiquity..."
  • April 25, 2003, Now hear this: Radio turns on digital signals Citat: "... From their brand-new transmitter atop the John Hancock Center, the two stations switched on IBOC, the In-Band On-Channel Digital Audio Broadcasting technology, developed by iBiquity Digital Corp.... The catch is that the digital signals require use of receivers that aren't expected to come on the market until July...."
• Evalueringer:
  • The National Radio Systems Committee (NRSC)
  • NRSC: AM IBOC Evaluation Report
  • Toledoblade.com: May 30, 2003, High-Definition radio, Digital demonstration receives poor reviews, could delay transition
  • 28-May-2003, America's radio revolution stalls Citat: "...Amherst says eight years of broadcasts and booming sales of digital radios in the UK have proven Eureka's sound quality to be good, largely free of interference and "superior" to IBOC...."
• Anvendelser:
  • 05.05.03, A Radio That Records Digitally

• ZDNet Australia, 6 May 2003 Digital radio moves forward with federal study group Citat: "...The Study Group is to report by 28 November 2003..."
  • Digital Radio Study Group Consulative Forum, Rapporter: Digital Radio Technology Update (pdf), Stocktake of implementation strategies for digital radio (pdf)
  • Australian Broadcasting Authority

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