0500-0759 UTC, 12055 KHz, 90 KW DRM power, HR 2/2/0.6, Azimuth 345 degree, 22.-26.02.2009

0800-0859 UTC, 12005 KHz, 90 KW DRM power, HR 2/2/0.6, Azimuth 345 degree (regular daily DW Transmission).

II-3

DRM : An Overview

Ms Vineeta DwivediProject Director, DRM

II-4

ABOUT THE SPEAKER

Vineeta Dwivedi is the Project Director of Digital Radio Mondiale – the international non-profit organisation working for adoption of the DRM gloabal standard. She is a media industry professional with experience in radio broadcasting and business development.

Vineeta was BBC World Service's Business Development Manager for India, and was responsible for distribution, marketing and developing BBC's radio and online business. In this role she worked on both commercial as well non-profit making models with focus on brand promotion and new business development and has worked on a variety of distribution platforms.

She worked with the BBC in London as a radio journalist and has been a broadcaster for many years. She has made several radio documentaries and has been a presenter of various World Service programmes.

Vineeta Dwivedi graduated in Science from the University of Lucknow and completed a Masters in English from Central Institute of English and Foreign Languages, Hyderabad. She did several management programmes during her stay in London; attended the Executive Leadership Programme from Henley Management College, UK and attended the Accelerated Management Programme from Indian School of Business, Hyderabad, India.

II-5

Abstract

Digital Radio Mondiale (DRM) has already established itself as a high quality radio broadcasting system for the bands below 30 MHz, bringing better sound quality and easy tuning. This presentation explores the development of the DRM system to include capability at higher radio frequencies, including the current FM bands.

DRM & DRM+

Mr Lindsay CornellBBC

II-6

ABOUT THE SPEAKER

Lindsay Cornell has worked for the BBC for 20 years. He has concentrated on radio since 1993. From 2001 to 2004 he was Head of Digital Radio, BBC Radio, responsible for the roll-out of BBC national DAB services and coverage.

He is currently Principal Systems Architect for the BBC's Future Media & Technology division. He consults in the area of digital radio systems.

Lindsay is chairman of both the World DMB and the Digital Radio Mondiale (DRM) Technical Committees and. is an authority on digital radio standardisation.

II-7

Abstract

Deutsche Welle is operating a DRM monitoring network in Europe since 2004. Purpose is the evaluation of coverage and availability of wanted target area in Central and Western Europe. The presentation gives an overview about DRM transmitter usage, monitoring network and results of multi and single frequency usage. Measurements furnished proof of high service availability.

Mr Thomas FeustelDeutsche Welle

DRM Coverage & Monitoring in Europe

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1 2

3 4

5 6

DRM Coverage & Monitoring in Europe

II-9

7 8

9 10

11 12

II-10

13 14

15 16

17 18

II-11

19 20

21

ABOUT THE SPEAKER

Thomas Feustel is working as engineer at Germany's international broadcaster Deutsche Welle. He started with software development and management of several projects. He is involved actively in migration of shortwave services to Digital Radio Mondiale (DRM) system for many years. At present he is head of terrestrial transmission and responsible for frequency and transmitter usage.

II-12

Abstract

Mass communication media continues to evolve with the widespread implementation of advanced digital technologies. Broadcasters and audiences have a wide choice of platforms, and can select their favourite at will. Digital AM, known under the brand name of DRM, is one of these exciting new digital platforms.

In fact, among all the mass communication media, Digital AM, or DRM, is the most cost-efficient, secure and reliable way to inform and entertain large numbers of people simultaneously. It is the only media platform which continues to work even when all other communication means break down during serious natural disasters like typhoons, earthquakes, hurricanes, snow and ice storms etc.

As a foremost DRM pioneer, Thomson is at the heart of all the newest DRM development and continuously invests manpower and resources in this technology to support broadcasters in meeting the challenges and demands of today and tomorrow.

The purpose of this presentation is to give an overview about some of the most exciting new DRM developments like DRM news service, DRM consumer receivers, DRM+ as well as a quick overview of the latest innovations from the house of Thomson.

Mr. Josef TroxlerManaging Director

Thomson Broadcast & Multimedia

What's New in AM Radio

II-13

What's New in AM Radio

highly attractive option. DRM has the ease of Introductionuse that comes from digital transmissions and

2008 was a special year in a variety of ways. We has the potential to bring to every radio set a vast

had worldwide a record high with respect to selection of content. Whether for local, regional

natural disasters like earthquakes, typhoons, or international coverage, DRM has proven

hurricanes, snow storms etc. The price of oil itself to be the easiest, cheapest and most

reached an all-time high. It was the year of the independent and reliable means of distribution

Olympic Games in Beijing and it was the year of and reception of information, music and

widespread introduction of mobile TV. As a entertainment.

matter of fact, the choice of affordable The DRM platform has the potential for serving electronic gadgets and devices, the choice of several 100 millions of listeners anywhere in the program content and the choice of media world with flexibly definable targeted coverage platform has never been as big as it is today.areas.

The real challenge for broadcasters today is to For broadcasters, no additional major meet the growing demands on increased investment in existing digital or even analog program diversification and quality and at the transmission infrastructure is necessary for the same provide for service continuity even in the implementation of attractive new services on face of large scale disasters. the DRM platform.

In this respect, AM broadcasting has lost none Broadcasters can use their networks as the of its appeal. On the contrary, digital AM offers platform for transformation as they deliver an numerous substantial advantages for listeners enhanced, expanded consumer experience.and broadcasters alike. With all the new

possibilities offered by the DRM platform, DRM has near-FM sound quality plus the ease-

digital AM has never been more attractive than of-use that comes from digital transmissions.

today. The improvement over AM is immediately

noticeable. DRM can be used for a range of DRM is the difference you can hear! DRM is audio content, and has the capacity to integrate the most cost-efficient, reliable and independent text and data. This additional content can be means to reach millions of listeners at home, on displayed on DRM receivers to enhance the the road, at work or travelling in distant listening experience.countries. Using multiple program structure

which allows the simultaneous transmission of DRM is the only economically applicable

up to four programs, DRM offers various modes digital system to cover large areas over long

to suit specific propagation conditions and distances. A whole continent can be covered

service requirements. with only a few transmitters and frequencies

with near FM audio and reception quality.

DRM can also be used like FM for local Fascinating World of DRM

coverage with very low power shortwave

In a world where mobile is the key, DRM is a transmission in the 11 m-band (26 MHz). This

II-14

found great interest worldwide as it can be used

instead of FM when all frequencies are already

occupied. Using adequate antennas with

reduced sky-wave propagation, local stations

can operate with high quality audio and data in

this band.

DRM+ is the name of the Consortium's project

to extend the DRM standard to higher

frequencies, allowing DRM to operate in the

broadcasting bands between 30 and up to 108

MHz; primarily Band I and Band II.

The interest in DRM is growing in leaps and

bounds. The ABU (Asian Broadcast-ing Union)

has been very active in con-ducting highly

professional tests and symposiums in various

countries.

In many developing countries, radio may still be

the only affordable medium of mass

communication with access to target

populations. It plays an important role in such

regions in binding individuals into a society by

the use of shared language, common interests

and objectives. Teeming with young Options like Multi-Frequency Network (MFN), populations and potential listeners, major Single Frequency Network (SFN) and Single transitions in life-style and media consumption Channel Simulcast (SCS) make very efficient are taking place in these areas.use of the existing spectrum.

Countries like India, Bhutan, Bangladesh, DRM uses the same frequency, spectrum and Russia, China, New Zealand and Mongolia are channeling as analog AM. aware of the importance of the radio

As the DRM system is developed for day- and communication platform and have openly

night-time coverage (ground and sky-wave), it is committed themselves to the DRM standard in

proved to work even under severe conditions like connection with the digitization of their

high man made noise in cities as well as difficult national networks.

propagation conditions.

Example of a possible SFN with use of DRM for National Coverage in England

II-15

Additional advantages include more efficient The new text-based Digital Radio information

use of the spectrum, more cost-efficient service Journaline® on the DRM platform

operation of transmission equipment, and reached spectacular results, demonstrating the

interesting options such as simulcast and single efficiency of short wave broadcast with the

frequency, multi-frequency and synchronized potential to cover all the Olympic Cities

multi-frequency network coverage options. simultaneously from a single transmission point.

Depending on frequency, transmitter power, The choice of coverage area depends only on

type of antenna, target area and time of day, a the configuration of the transmitter and

single transmitter using DRM can provide antenna themselves and is completely

hundreds of millions of listeners with independent of third party infra-structure and

simultaneous access to data. In comparison, interference like satellite, Internet, etc.

simultaneous access of the Internet by only 10% The service was integrated into special Audi of these listener numbers would block lines and VIP shuttle vehicles in Beijing for in-car cause server break downs. reception, including text-to-speech function.

Whether for local, regional or international Out-of-car reception was provided by the DRM

coverage, DRM has proven itself to be an ideal receiver from NewStar Electronics, the first

means of distributing and receiving consumer, chip-set based portable DRM radio

information, music and entertainment. receiver to integrate the multiple data services

including slides shows and Journaline®.

Thomson, partnering with Audi and World First for DRM at

Fraunhofer Institute, was instrumental in the Olympics 2008 implementation of the project, providing the

DRM program via the end-to-end Thomson The Olympic Games 2008 at Beijing was an DRM transmission chain.ideal showcase for the world-first demonstration

of the new Journaline® News Service on a Such a solution can be developed to cover a

multi-platform implementation including DAB country's specific needs and is also usable for

and DRM, demonstrating to the world the great financial, traffic, weather and program

technological solutions available today using information etc. This multi platform

digital radio systems.

The idea was to have all the latest sports results

as well as sports related news and background

articles immediately available in the

DAB/DMB/DRM receivers at all times. Users

can look up information or follow the self-

updating scores of interesting matches. The

international aspect of the Olympics event

could be easily demonstrated by providing the

same information in a variety of languages

simultaneously.

II-16

information service is only one example of the

substantial advantages made possible by digital

radio systems.

DRM Receiver News

To listen to DRM, you need a digital receiver.

The long term success of DRM depends on the

widespread availability of affordable, off-the-

shelf multi-functional consumer receivers. 2008

was a remarkable year with respect to important

breakthroughs for the receiver industry. In the

course of the year, highly attractive new digital

receiver sets from China, Russia and Germany

have been showcased at exhibitions around the

globe.

The newcomer UniWave industrializes the

first multi-media receiver based on the NewStar

chipset model. Packing all the digital

functionalities that listeners are looking for into

a neat, portable model, the attractive new DRM

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Radio Receiver was successfully demonstrated equipped with a whole range of attractive

in a symposium in Mexico earlier this year and features, like 768 station memories, multi-

showed excellent results during the Olympics language graphic User Interface, 3.5" TFT

with Journaline®. display and many more.

The Russ ian company Sarapulsky

Radiozavod has come up with the first DRM

car receiver for the market.

With dimensions of 125mm (H) x 65mm (W) x

232mm (L) the UniWave set is a very handy,

portable set, light and easy to carry. DRM

functions include station name, program

information, Journaline®, MOT slideshow and

listening time-shift of 10 minutes.

Reception is possible with DRM, FM-RDS

stereo on phones, SW/MW/LW. The set comes

The SRZ RP-229 DRM/FM car receiver

is based on the Blackfin module and delivers

near FM quality of digital transmissions in

stereo. The device enables receipt of DRM,

FM/RDS and LW/MW and SW. Reception of

DAB, DAB+ and T-DMB Audio are foreseen as

options. In addition, the set features a

MMC/SD card slot for playing and recording

mp3 music. The sets are expected to be on the

market in Q2 of 2009.

The portable set is a multi-platform receiver,

capable of DRM as well as DAB reception.

The German company TechniSat has

showcased a new model, “MultyRadio”, which

can receive most of all terrestrial radio

transmissions in all countries: DRM, DAB Band

III and L-Band, FM/UKW band as well as LW,

MW and SW. the set is equipped with a

MMC/SD card for recording DAB/DRM and

playback of mp3 and WMA and is equipped

with a 128x64 pixel display.

II-18

thOn September 29 , 2008, an international

meeting held in Kaiserslautern, Germany,

unveiled the first highly positive results from the

trial broadcast of the DRM+ digital radio

standard. Wherever FM could somehow be

heard outside the nominal coverage area,

DRM+ could be heard well – and even further –

with no problems whatsoever.

DRM+ provides clear added value for the

listener by offering not only an uninterrupted DRM+ for Local Coverage service for both portable and mobile reception,

but also excellent audio quality. It integrates DRM+ is the name of the DRM Consortium's

additional content like text and data which can project to extend the DRM standard to higher

be displayed on DRM receives to enhance the frequencies up to 120 MHz.

listening experience!Tests have shown that FM DRM+ shares the successful design philosophy and DRM+ can co-exist within the same of DRM, it is DRM but at higher frequencies. broadcast band without problems, whereby the DRM+ is implemented in the standard as reach of DRM+ well exceeds that of FM.robustness mode E. Its spectrum usage

parameters are determined from the

internationally agreed norms in the FM band Thomson Optimizes Broadcast

(88 to 108 MHz). DRM+ provides bit rates from Systems35 kbps to 185 kbps at SNRs from 2 dB to 14 dB

and, like DRM, permits up to four services. A high overall efficiency of the complete

transmission chain can save broadcasters It is therefore a flexible solution allowing single literally millions of dollars over the component or small numbers of audio services to be life cycle of 20 or more years.broadcast together, or even for video streams to

handheld devices. It is more cost-efficient in A transmitter with a 5% lower purchase price operation than FM and allows for a more today might end up costing you many times efficient use of spectrum and gives local and more over the years for energy and maintenance regional broadcasters a low-cost opportunity to if the system efficiency is not optimized. digitize their programs during a transition

Looking at the efficiency of the overall system, phase.

we see that it can range anywhere from 30% to Throughout March, April and May 2008, the 75%, depending on how much of the energy University of Applied Sciences Kaiserslautern taken from the mains will finally be transmitted Germany has broadcast its experimental radio to the specified target area.station across the southwest German city in

Responding to the growing need of digital on 87.6 MHz using DRM+ in order to

broadcasters to reduce energy consumption and test this extended version of the DRM digital

operating costs, Thomson makes important radio standard.

II-19

advances in newest energy-savings technology. equipment withstands the wear and tear of day-

Our teams are specialized in optimizing overall to-day, around-the-clock operation and pays off

broadcast system efficiency. in terms of low, long-term maintenance costs.

Thomson transmitters can operate in various Transmission systems from Thomson are

energy saving modes like DCC and AMC that designed with life-cycle costs and reliability in

reduce the transmitter energy consumption up mind. They provide operational savings and

to 50% as compared with the classical DSB allow for rapid adaptation to new requirements.

(Double Side Band) mode.

In digital mode (DRM), the savings potential is Summary

quite amazing. A Thomson DRM transmitter

Today, with the exciting new possibilities consumes only around a third of the power of

provided by DRM, there is no limit to what an analogue transmitter to cover the same area

radio broadcasting can do. in even better quality.

After more than a hundred years, it is still the The vast field experience gained over 70 years

only media to reach out around the globe and of broadcast engineering has convinced us that

inform and entertain people anywhere using a building equipment based on tolerance design is

single, independent infrastructure from the own always a wise decision.

home territory.Thanks to tolerance design, Thomson

II-20

ABOUT THE SPEAKER

Mr. Troxler has been active in the broadcasting business since 1987.

Beginning as a commissioning engineer of high power AM broadcast transmitters for Thomson Broadcast & Multimedia AG (former ABB; Thomcast, Thales) business unit in Switzerland, Troxler had since then various managing positions in the company.

Since May 2008 Troxler is the Managing Director of Thomson Broadcast & Multimedia AG and in charge of the product line Radio within Thomson Group.

Josef Troxler was born 1961 near Lucerne in Switzerland. He is married and has four children.

The teams at Thomson Broadcast & was officially inaugurated by the Chief

Multimedia are totally committed to the future Executive Officer of Prasar Bharati in January

of radio broadcasting. We work hard to provide 2009.

our customers with the best, most innovative Radio plays an important role in India as a and most cost-efficient equipment available communication medium in the nation's political anywhere today. and economic development. AIR maintains one

DRM transmission systems from Thomson are of the largest broadcast networks in the world,

in operation in more than 20 countries around its radio broadcast service covering roughly

the globe. More than 60 Thomson transmitters 99% of the Indian population and 91% of the

- with a total of more than 11'000 kW AM territory.

output power - are capable to work regularly in It is a pleasure and honour for Thomson to have DRM operation. been selected by All India Radio for the upgrade

One of these countries is India. Since October of its broadcast network to digital. We are proud

2008, All India Radio AIR is doing regular to work together with the teams at AIR to bring

DRM transmission in NVIS mode and external a bright future to the broadcast platforms in

services for UK and Europe. The DRM service India.

on the Thomson 250 kW short wave tranmitter

II-21

Abstract

DRM receivers based on programmable Digital Signal Processing chips not only offer competitive sound quality and data services, but also enable manufacturers to create multi-featured products along with additional audio post processing routines enhancing the listening pleasure. Suitable middleware adds more functionality to the receiver.

Mr T.V.B. SubramanyamAnalog Devices

DRM Receivers using Programmable DSP chips

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DRM Receivers using Programmable DSP chips

Introduction

There is a global trend towards the adoption of

digital technology in radio and commun-

ications. Digitalization offers many substantial

advantages. Digital Radio Mondiale (DRM) is

the only universal, non-proprietary digital AM

radio system with near-FM sound quality

available to the markets worldwide. Besides

providing near-FM quality audio, the DRM

system has the capacity to integrate data and

text. This additional content can be displayed in

the DRM receivers. Unlike some of the other

digital systems that require a new frequency

allocation, DRM signal is designed to fit in

within the existing broadcast bands.

Digital radio brings broadcasters increased

interactivity and connectivity for enjoying the

benefits of a wider choice of content with a

crisper signal quality, ease of tuning and extra

functionality which has the potential of

providing extra revenue streams for commercial

operators. For attaining mass markets and to

have a wider listen base, it is important to have

affordable digital radio receivers that can meet

the stringent requirements.

DRM Specifications

The properties of DRM signal are shown in

Table 1.

As shown here, the spectrum occupancy can be

4.5 or 5 or 9 or 10 or 18 or 20KHz. This

spectrum occupancy has significance in the

receiver design as will be shown later. It may be

worthwhile to note that the 20KHz bandwidth

as one of the possible bandwidths is asymmetric

with -5KHz and +15KHz from the center

frequency Fc as shown in Figure 1.

Parameter Details Frequency Range 150KHz to 30MHz (DRM+

extends this to 108MHz) Spectrum Occupancy 4.5KHz / 5KHz

9KHz / 10KHz18KHz / 20KHz

Robustness Modes A, B, C, D Access to DRM multiplex Fast Access Channel (FAC)

Service Description Channel (SDC)Main Service Channel (MSC)

DRM multiplex reconfiguration Service reconfigurationChannel reconfiguration

Table 1: Properties of DRM signals

Parameter Details MSC Modes 64-QAM 16-QAM

SDC Modes 16-QAM 4-QAM Interleaver Depths Short Interleaver: 400mS

Long Interleaver: 2 Seconds Services Up to 4 services Data entities and IDs Data available as part of

SDC Text messages and packet mode Data available as part of

SDC Alternative Frequency Signaling Enabling switching of

frequency for best reception quality

Table 2: Other relevant DRM specifications

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These have the functionality of a DSP as well as Receiver Implementationa micro-controller in one device. For control

In the last one decade, digital signal processing functions such as display, keypad, remote

(DSP) chips have improved immensely in control, etc., the microcontroller features are

performance and speeds. Performance useful and for decoding of the digitized signal

enhancements have come by using efficient and converting it to information or signal that

architectures and speeds have improved with can be fed to a speaker or a headphone, the DSP

small geometries in IC fabrication techniques functions are essential. This family of

and lower voltage & power processes. With processors offers a wide variety of interfaces

advancement in IC manufacturing process and making it easy for creating multi-featured

with growth in production volumes, the price of products in the consumer electronics domain.

these devices has also decreased. The enhanced Digital Radio Mondiale (DRM), has some very performance of these devices, it has been challenging requirements in terms of various possible to execute routines and algorithms as routines and algorithms that need to be embedded software that was not possible on a executed for decoding in DRM receivers. small device earlier. Blackfin family of DSP processors is well suited

Thus what was possible to be executed on a for these computational requirements.

Personal Computer (PC) earlier is now possible Figure 2 shows a simple block diagram of a to be executed on a DSP. It is important to see DRM receiver consisting of three fundamental what algorithms are actually required to be blocks. The first stage is a RF tuner, which executed on the processor for a specific provides an analog signal suitable to be used by function, identify unused horsepower, identify the second stage, baseband processing stage. what the markets or users may like to see in a The baseband signal processing stage then product and then implement them in such provides an audio output that is amplified and embedded platforms.sent to a speaker or a headphone stage.

Analog Devices has a family of power digital The RF tuner implemented by Analog Devices signal processing (DSP) chips called Blackfin.

Figure 2: Basic block diagram of a digital radio

Channel

Decoder User

I/O

ADC

Source

Decode

DAC

RF

To

IF

Baseband

DSP

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in their DRM radio reference design consists of to down convert the IF signal to a 7KHz low-IF

3 essential elements: signal.

1) Active antenna and front-end stage, licensed Once the RF tuner provides the low-IF at the

from Deutsche Welle, Germany. This circuit desired frequency of operation, the baseband

enables boosting of the RF signal, filtering off section digitizes this and sends the data to the

components of FM signals when in AM or processor for further computations in the digital

DRM band and also selects the appropriate domain. These computations are performed on

filter when tuned in the desired frequency the Blackfin processor.

range. Blackfin essentially performs the 3 functions

2) RF to IF conversion stage. Here the signal shown in Figure 3 and all these functions are

conditioned RF signal goes to a tuner that executed on a single processor without the need

converts this to an IF signal at 450KHz. to have an additional micro-controller on

board:3) IF to Low-IF conversion stage. The signal is

passed through a filter to limit the bandwidth to 1) Channel Decoding: The digitized RF signal is

10KHz or 20KHz depending on the converted to I&Q signal after an automatic gain

requirements. The center frequency of the filter control (AGC) and digital filtering stage.

is selected in a way to enable symmetric Synchronization, channel estimation, fast

frequency spread for the 10KHz bandwidth fourier transform (FFT) and de-multiplexing

and asymmetric frequency spread for the operations on this data provide the FSC, SDC

20KHz frequency. Then a local oscillator is used and MSC information. From this, data for the

Figure 3: Functions within Blackfin processor

Channel

Estimation,

Error

Correction,

HVXC + SBR

Audio

Frame

Creation

Channel Decoder

Source

Decoder

I2S Data

Headphone

Speaker

Label, Text Info

Program

Language

MMI

Information

CELP + SBR

AAC + SBR

II-21

‘data services’ and ‘audio services’ is extracted. Appropriate source decoder is selected for

Details of the micro-level functions are shown in decoding the channel decoded audio services

Figure 4. data which results in a digitized audio output.

This is then passed through a digital-to-analog 2) Source Decoding: The data extracted for converter and then an amplifier to be finally sent audio services is then analyzed if the audio is an to speakers or a headphone.encoded version of:

3) Man-machine interface; The data from the 1) HE-AACdata services component provides the text 2) CELPmessages, station information, program label, 3) HXCservice label, etc., to be used by the processor to

Figure 4: Block diagram of a baseband section (Source: Fraunhofer Institute)

Flash

AMS

SDRAM

SMS

LCD

Keypad

PPI

I/O

BF53x

DAC Amp

I2S

SPI

AM/FM/DRM

Tuner

Figure 5: DRM implementation using Blackfin

II-21

be used intelligently on the LCD display. In control purposes or may have independent pre-

addition, the processor also performs other set control functions and the volume control

man-machine or user interface functions such as function is executed by the Blackfin processor.

IR remote control, key pad, volume control, etc. In addition to the above, the Blackfin processor

Last stage of the radio receiver is the amplifier controls the tuner for various station selection

stage which “may” be connected to Blackfin for functions and other peripheral devices such as

Test Parameter Units MRR Requirements Results

156KHz dBuV/m <46 40

219KHz dBuV/m <46 37

549KHz dBuV/m <40 32

774KHz dBuV/m <40 30

1440KHz dBuV/m <40 29

1593KHz dBuV/m <40 28

2410KHz dBuV/m <32 32

3995KHz dBuV/m <32 29

5910KHz dBuV/m <32 30

9400KHz dBuV/m <28 28

15110KHz dBuV/m <28 28

21450KHz dBuV/m <28 28

25595KHz dBuV/m <28 28

Test

Table 4: Test results of the reference receiver Table 3: Test results of the reference receiver

Test Parameter Test Results Inter-modulation 5dB better than MRR Blocking > 57dB Dynamic Range 25dB more than MRR Adjacent Channel Suppression With offset of +/- 10 KHz: 5

dB better than MRR Adjacent Channel Suppression With Offset of +/- 20 KHz: 12

dB better than MRR Reception Frequency Offset 400 Hz better than MRR Operating Voltage of Power supply Nominal Supply Voltage: 9V

Receiver works between 6.5 to 12 volts

To

BF533

Flash SDRAM

EBIU

SD Card

Connector

WiFi

Module

SPI

Class D

Amp

ADAU1592

SPDIF TX

ADAV803

SPDIFSPORTs

DAB/DAB+/DMBA

Tuner

iPOD

CD /

DVD

Drive

Hard

disk

Drive

LCD / TFT

Keypad

IR Remote

PPI

UART

NAND

Flash

UART for

control

I2C for

control

AMS

UART

AMS

Ethernet

RTC 32.768 KHz

Oscillator

USB OTG

CODEC

ADAU1361

SPORTs

SPI

AM/FM/D

RM Tuner

Figure 6 : Example of a multi featured product

II-21

memory control, ADC and DAC control, etc. with minimal increment in cost are:

Figure 5 shows the block diagram of such an 1) SD Card interfaceimplementation.

2) USBThus, various control and signal processing

3) Ethernet based internet radiofunctions have been executed on one single

4) WiFi based internet radioprocessor providing a complete Digital Radio

based on DRM standards. 5) CD drive

A radio with such a design has been tested at 6) Hard disk driveDeutsche Welle and Table 3 and 4 provide the

7) iPod docktest results and a comparison with Minimum

Can also have optional interfaces to radios Receiver Requirements (MRR) stipulated by useful in other countries:the consortium.

• DAB radioIn addition to the DRM radio functionality, the

same processor can be used for multiple other • XM radiofunctions making it a truly multi-featured

• HD Radioproduct. Figure 6 shows a block diagram of such

Figure 7 shows picture of a developer’s kit for a multi-featured product. creating such a product. This kit has the ability

Some of the other features that can be added

Figure 7: Picture of a Desktop Audio Developer’s kit with DRM with some of the interfaces enabled

II-22

ABOUT THE SPEAKER

T.V.B. Subrahmanyam, did his Masters from IIT Delhi in 1983 and after 13 months of research activity at IITD, he has been working for Analog Devices (ADI) since 1984. The first 10 years of his association with ADI was in Sales, after which he assumed Global Marketing and Project Management responsibilities. As a Senior Program Manager, he has managed very successfully projects in the areas of Motor Control, Energy Meters and Power Line Communication. In the last few years, he has been responsible for Digital Desktop Audio programs and has enabled some very high valued customers with product designs from his team.

to function as a digital radio, internet radio and radio then becomes a feature and not a product

also as an audio player. by itself, thereby the cost of DRM is marginal.

Some of the additional software modules such Summaryas Middleware, Audio post processing and user

Blackfin based multi-featured desktop audio appealing graphical user interface, running on with Digital Radio Mondiale (DRM) as a the same processor make it a single processor feature is available for manufacturers to adopt based digital desktop audio system with features and use it for commercial products. shown in Figure 3.

The significance of the same processor being

used for all the above functions is that the DRM