Grundig Digital Radio Types of Receivers, Conceptual diagram of the outer coder and interleaver

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DIGITAL RADIO GUIDE

TERRESTRIAL TRANSMISSION SYSTEMS - DAB

Figure 4.3: Conceptual diagram of the outer coder and interleaver

For generic audio coding, a subset of the MPEG-4 High Efficiency Advanced Audio Coding v2 (HE AAC v2) toolbox - chosen to best suit the DAB system environment

-is used. Some additional tool specifications have been applied to optimise performance for the broadcast environment of DAB digital radio.

More details can be found on the WorldDAB websites at www.worldDAB.com.

4.2.7Types of Receivers

A selection of DAB digital radios has been on the market since 1999 in models for the home, the car and the PC. Handheld radios also entered the market in 2003 with competitively priced models for radio listeners on the move. Stations can also be accessed using a PC equipped with a suitable receiver/decoder card.

Availability of DAB digital radios varies from country to country where DAB is available. Department stores, independent retailers, supermarkets and multiples in most major cities in the UK carry a wide range of receivers representing a mature retailer market scenario. In the UK there are nearly 150 products in the market rising to around 200 products by the end of 2005. In Germany, Belgium, Nordic countries and Singapore, DAB is becoming available via specialist stores, independent retailers and some department stores in small quantities, and in Italy through manufacturers’ catalogues. In Spain and France, receivers can be ordered and delivered on demand.

Prices of digital radios were high at first, but as with most new technologies, over time, prices have fallen dramatically. Receiver prices vary from country to country, so it is impractical to present specific price points within this guide. However, DAB digital radios can now be found retailing from €60. A price guide is available from the WorldDAB Project Office, on request, on the WorldDAB website, www.worlddab.org/dabprod.aspx.

Models delivering additional features have also been developed, with rewind, pause, record functionality and Electronic Programme Guide (EPG) already integrated in some models.

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Contents Page Page Foreword Page Table of Contents Appendix C Glossary of Acronyms Introduction What is Digital Radio? Digital Radio Systems Terrestrial in service date Satellite Service dateDRM+ Why Digital Radio? DRM Digital Radio Mondiale Terrestrial Transmission SystemsOverall design Brief Description of the DRM SystemDistribution Interface DRM Source Encoding and Decoding Audio Source CodingDRM Source Decoding Channel coding and modulation Over the air Transmitter Considerations4 DRM+ System Description DAB EurekaSystem Development Principal Advantages and ChallengesChallenges Denmark DAB Development Worldwide asBelgium CanadaSingapore FranceGermany ItalySwitzerland South KoreaSpain SwedenUnited Kingdom Synergies with Other Systems Eureka 147 Main System FeaturesMain System Features Infrastructure RequirementsSynergies with Digital Radio Mondiale DRM Synergies with Digital Television Future Developments of DABDAB-Based Multimedia Broadcast Systems DMB T-DMB DAB-IP IP over Enhanced Packet ModeGerman DXB Project Enhanced Audio Codec, DAB+ DAB as carrier of multichannel audioDigital Radio Guide Terrestrial Transmission Systems DAB Types of Receivers Conceptual diagram of the outer coder and interleaverPC Receivers In-Home ReceiversIn-Car Receivers Handheld ReceiversJVC List of manufacturers and their DAB productsTeac Audio encoding system Japans Digital Radio Broadcasting ISDB-TSBOverview MethodsTransmission bandwidths Error correction systemMultiplexing System Transmission channel encoding system Modulation methodHierarchical transmission and partial reception Data Segment SpectraPage Parameter restrictions in connected transmission Example of connected transmission three TS’sInformation bit rates for the triple-segment transmission*5 Transmission capacitiesReceivers CharacteristicsMultiple voice broadcasting Overview of ServicesTrial receivers Receivers expectedOutlook for the Future Download service experimentBroadcasting of simplified moving images IBiquity HD Radio System HD Radio AM and FM Receivers HD Radio Standards ActivityTypical HD Radio Automobile Receivers HD Radio System Technical Design OverviewAdvanced Application Services AAS Core ServicesMain Program Service MPS Station Information Service SISHybrid Waveform Waveforms and SpectraFM Extended Hybrid Waveform FM All Digital Waveform 12 Hybrid AM HD Radio system spectrum allotment HD Radio Subsystems13 Functional Block Diagram of HD Radio System RF/Transmission System Receiver SystemsSound Quality Features Common to North American Digital Radio SystemsMultipath Resistance Audio Quality Ratings Frequency ResponseMpeg AAC Infrastructure Requirements Licensees Deployment StatusSpectrum Availability Issues related to Terrestrial SystemsCase Study Allocations in Region DAB DVB-T 18 RRC-06 planning area19 T-DAB coverages in Band Entries HD Radio Iboc Implications of SimulcastingDRM Digital Radio Mondiale CoverageDigital Radio Guide Terrestrial Transmission Systems Issues WorldSpace ITU-R System D Satellite TransmissionBroad Picture WorldSpace Coverage Map Transmission Footprints WorldSpace Up-link Coverage JVC Sirius Satellite Radio / XM Satellite Radio Sirius Overview Sirius Sdars Delivery System Raan Sirius ConstellationSirius Ground Track Repeaters Deployment StatusTT&C Continental US Satellites GroundMobile Broadcasting Corp. and TU Media Corp. ITU-R System E Introduction Internet Radio IRBringing Radio to the Internet Internet Radio peculiarities Internet Radio as a complement to established radio services Internet-only stations IR Portals and Music Portals Streaming technology for radio servicesDistribution networks Server-clientP2P networks WiMAX MulticastingPodcasting Internet Radio terminals and playback devicesInternet Radios relation with the traditional radio Measuring audience Digital Radio Guide Internet Radio 10.1 VRT Case studiesVirgin Radio Swedish Radio multichannel audio distribution Summary and ConclusionsLive Some Important Radio PortalsBeethoven Launch Music on Yahoo Launch.yahoo.comMTV Radio IM TuningRadio VH1 Last FMSHOUTcast Some Sources for the Digital Radio Guide Etsi Cenelec IEC Digital Radio Guide Sources Appendix a The Eureka 147 System System Description Major System FeaturesOverview Data Capacity Modes of OperationTable A.1 Eureka 147 Transmission Parameters IIINumber of audio services in a multiplex Data ServicesTable A.2 Example of possible number of programs Spectrum Issues Eureka 147 Channel PlansAudio Quality ITU DSB Handbook Planning ParametersVHF Band Propagation PropertiesBand 1452-1492 MHz Multimedia Object Transport MOT Recent system developmentsDynamic Label Slide Show Broadcast WebsiteElectronic Programme Guide EPG Etsi DAB Virtual Machine DAB JavaDAB Receiver Interfaces Conditional AccessFile caching in the receiver SBR LayerTopNews Tpeg transport in DAB IP datacasting in DABThird Edition Advanced demodulation technique for CofdmTable A.3 Etsi Standards relating to Eureka Number TitleGSM / Pstn / Isdn / Dect ITU Publications and Recommendations Receiver StandardsTable A.4 Receiver Standards for Eureka Reference TitleBBC DAB Appendix B Relevant World Wide WebsitesNasb 111 Glossary of Acronyms DRP DRBDrdb DRMITU IeeeIfpi ISDB-TSBPNG P2PPAD PDATmcc TDMTdma TMCDisclaimer

Digital Radio specifications

The Grundig Digital Radio represents a significant advancement in radio technology, combining aesthetics, functionality, and a user-friendly interface. As a pioneer in the audio and electronics industry, Grundig has successfully integrated modern digital capabilities into its traditional radio design, appealing to both nostalgic listeners and tech-savvy users.

One of the standout features of the Grundig Digital Radio is its versatility in reception. With DAB+ (Digital Audio Broadcasting) technology, users can enjoy a wide array of radio stations with superior sound quality, free from the hiss and interference commonly associated with analog broadcasts. The inclusion of FM and AM bands ensures that listeners are not limited, providing access to local stations that may not yet have transitioned to digital.

The Grundig Digital Radio is designed with ease of use in mind. Its intuitive interface, often featuring a clear LCD display, allows users to navigate through stations and settings effortlessly. Many models also include a built-in tuner that automatically scans and presets available stations, simplifying the setup process. For those who appreciate personalization, some variants come equipped with customizable presets, allowing users to save their favorite stations for quick access.

Portability is another key characteristic of the Grundig Digital Radio. Many models are lightweight and come with built-in handles, making them ideal for on-the-go listening, whether it's in the garden, on the beach, or during a picnic. Battery options, alongside mains power, ensure that users can take advantage of their radios wherever they choose.

In terms of sound quality, Grundig utilizes advanced audio technologies to deliver rich and clear sound. Enhanced bass responses and treble controls allow users to fine-tune their listening experience to match their preferences. Furthermore, many models feature additional inputs, such as AUX and USB ports, enabling users to connect their smartphones or other devices, expanding their audio options.

Other notable characteristics include built-in alarms and timers, which make the Grundig Digital Radio a versatile companion for daily routines. Some models even support Bluetooth connectivity, allowing for seamless streaming from a variety of devices.

In summary, the Grundig Digital Radio embodies the perfect blend of traditional radio appeal and modern digital technology, offering versatility, ease of use, superior sound quality, and portability to meet the diverse needs of today’s listeners. Its well-thought-out features and user-friendly design make it an excellent choice for anyone looking to enhance their audio experience.
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