Tag Archives: worlddmb

Home / Posts tagged "worlddmb"

Digital Britain has arrived (or is at least en-route)

Digital Britain Logo

So here’s my brief contribution to the flurry of analysis of Lord Carter’s Digital Britain report.

The biggest news is that we get a target date for switchoff (sorry, “Digital Upgrade”). 2015 is the year we should be flipping the OFF switch on (almost all) analogue radio, and offering universal coverage of DAB. That date can now be plugged into business plans, and financial projections, and hopefully provide the necessary laxative effect to the recently sluggish developments around DAB in the UK.

So, rather than dissect all of the Radio section of the report, which others will do better than I, here are the bits I particularly noted:

It’s a full switch-off (“upgrade”)

Some summaries have suggested that the 2015 deadline only applies to national radio. It doesn’t – it applies to all services being carried on both national and local multiplexes (3b.10). The only thing left on FM post 2015 will be very small scale services; either commercial or community. There is not going to be a dual-speed changeover, which leaves local radio dragging along for years with a foot on each platform. That’s good.

Support for WorldDMB Profile 1

There it is, snuck away in 3b.20 – receivers sold in the UK should be at least WorldDMB Profile 1 compliant. The box on the following page is a little more explicit in saying that we are giving ourselves a migration path to DAB+, which is the smart thing to do. Nobody seriously considers DMB-A (the Frankenstein bodge invented to make an ill-informed decision seem at least slightly less ridiculous) for radio, so let’s ignore that. Some commentators have, incorrectly, said that Profile 1 includes DRM. It doesn’t, and DRM needs to mature a great deal more before it can earn a guaranteed place alongside DAB and DAB+.

Improving Signal Quality

It’s no secret that I don’t believe DAB should be crippled by being forced into universally super-serving a small fragment of the audience that expects ultra-high-quality audio from every radio station. The market can and will decide what audio quality is right for which stations and bearers.

But I do believe that we need to offer robust indoor and handheld coverage to everyone who currently enjoys that from FM now, and by crikey, it’s not rocket science to do it. Australia’s got the right idea – power. And more of it.

There’s some more crypticness in the report. It talks a lot about achieving equivalent coverage prior to 2015, but only in 3b.23 does it explicitly recognise that indoor coverage must be more effective. It also recognises that there’s some cost in achieving network upgrades, but notes that there is opportunity for negotiation between the BBC, multiplex operators and transmission providers. That’s timely, as many of the initial multiplex transmission contracts come up for renewal soon, and knowing with certainty that it’s worth spending money on the infrastructure is very valuable.

Replanning the network

This wasn’t as explict as I had hoped for. There is reference in 3b.26 to giving OFCOM the powers to re-plan and amlgamate multiplex areas, but I would really would like to have seen a more definite commitment to re-plan at a spectrum level to get a step-change in coverage (up) and costs (down). At least there’s a statement that sorting out coverage shouldn’t be as expensive as some people might have made out it could be.

And now – drum roll – the best bit…

In fact, it’s so good, it’s the only bit I’m going to quote verbatim from 3b.31:

Functionality and interactivity must become central to the DAB experience.
EPGs, slideshows, downloading music, as well as pause and rewinding live radio
must be developed and brought to market on a large scale. Broadcasters and
manufacturers must seek to develop and implement digitally delivered in-car
content, such as traffic and travel information.

Well, we waited a decade, and now it’s a formal part of the plan to digitisation. Digital Radio must prove its worth by doing something… digital. If we don’t use the platform and spectrum we’ve been given (and will continue to get for free for a while – 3b. 27) to evolve radio, what’s the point of doing it? Same value, different platform?

If the other parts of Digital Britain are designed to create confidence in building transmission infrastructure, and writing long-term financial plans that support transitionary investment to achieve that, then this is the statement that should create the confidence in investing in a new kind of digital radio, and it’s about a content led experience that’s enabled by a universal, free-to-air technology. If the rest of the report stabilises the ship, and gives it a shove in the right direction, this is the bit that signals the start of true innovation and digital change for radio.

Standardising the standards – why DAB Digital Radio profiles became essential

DAB Digital Radio Receivers Lineup (C) DRDB 2008

The Eureka 147 project, from which DAB Digital Radio was born, bequeathed us a very feature rich, powerful and flexible multi-media broadcasting platform, neatly optimised for small, mobile, battery powered receivers. In fact, as a piece of technology, the core EN 300 401 spec and its associated standards (EN 302 077 etc.) are often imitated and are hard to beat. For mass-market radio broadcasting, I believe it is an unbeatable technology.

The core standards were written as a pan-European project to create a digitisation path for radio; an early example of Agree on Technology, Compete on Content. Whilst there are daft things in there (over 10 categorisations of speech programming, only 2 categorisations of “Pop” and “Rock” music), the core has been on-air since 1995, and remains virtually unchanged.

Being fine technologists, the original specification writers left lots of hooks and places to extend the specification. That’s why DAB has so easily incorporated DAB+ and DMB (Mobile TV), and spawned a myriad of interesting data applications – Slideshow, Broadcast Website, EPG, TPEG, IP over DAB (to name but a few). Whatever problem you have to solve, EN 300 401 provides a pretty good starting point. Without over-simplifying things, if you can write packet-orientated IP applications, you can probably write applns for DAB too.

But somewhere along the way, the community lost track of the real reason to Agree on Technology – and it’s receivers. It’s all very well writing the coolest ever DAB application, but what if nothing can receive it? E P I C F A I L…..

I’ve grumbled enough about the individual nations of Europe (and elsewhere) tinkering around without thinking about the implications of their actions. Nuff said.

The outcome was that too many manufacturers, particularly the automotive manufacturers, just found it too confusing and risky to build receivers. Last time I looked, there were three different audio transmission systems, three different ways of visualising radio, two ways of adding browseable content, two ways of transmitting text information, two ways of downloading Java apps to the receiver, and nobody seems to have agreed completely yet how to transmit traffic and travel information. Not only were receiver manufacturers confused about what to support in their devices, broadcasters and regulators couldn’t decide what to do either.

In an attempt to get some direction back into the matter, WorldDMB have produced (after due consultation with the relevant stakeholders) a set of standard receiver profiles, which attempt to balance functionality, complexity and cost, whilst retaining a goal of European-wide interoperability.

  • The Profile 1 receiver is pretty simple – audio (all three types), simple text display. The Profile 1 receiver is the market entry receiver that demonstrates that DAB Digital Radio is a mass market technology anyone can afford. I would hope to see €15,- receivers available Europe-wide within 5 years.
  • The Profile 2 receiver is, in my opinion, where it’s at – or more precisely, where the money is at for the broadcasters. Profile 2 requires a colour screen and supports simple visualisation (amongst other things). If Profile 1 is analogue radio made digital, Profile 2 is proper digital radio. Profile 2 ought to be attainable by all “radio” manufacturers, and Profile 2 (automotive) has to be a slam dunk when you see what people like Audi have in store for our cars.
  • The Profile 3 receiver will probably never get built. Seriously. Profile 3 is the all-singing-all-dancing-it-does-everything-the-licensing-costs-will-be-horrendous profile. What I expect will happen is that a device that already includes pretty much all the relevant technology (and nasty licensing fees) will use Profile 3 to integrate DAB into the device. Think Nokia N-Series, Apple iPhone, Google Android (because I certainly am).

Hopefully by creating some more definite “standard receivers” from the standards, it will enable to confident decision making and commitments. Without it, the market would have stalled in hesitation and uncertainty.

So the ball is back in the court of the broadcasters to broadcast services that consumers will want to buy new radios from manufacturers to receive. That’s natural order of these things. And hopefully, in the future, my colleagues from across Europe will be talking together about how to evolve radio, so that we avoid another clearing-up session in 5 years time.

(Photo – (C) DRDB – Digital Radio Development Bureau)