All posts by Briantist
Below are all of Briantist's postings, with the most recent are at the bottom of the page.
PJH: Why not use lossless FLAC - Wikipedia, the free encyclopedia encoding? 100% identical to having a WAV.
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michael: Seems a fair summary.
When the DAB network is complete, 99% of homes will have indoor reception and 99% of the road network will have mobile reception.
The frequencies won't change, but the increase in the number of transmitters will convert "outdoor" coverage areas to "indoor".
Your second point is correct. However, the "market" has spoken: the public like choice over audio quality.
To be fair, the music rights holders are also happy to have non-perfect output of their material to "fight piracy".
The AAC codec in most markets where DAB+ has been implemented has been used to increase the number of stations, not the bit rates.
DAB does "waver", but so does any transmission system. Digital transmissions systems deal with the imperfections of the real world with forward-error correction.
The DAB network has still to be finished, but outdoor locations should have excellent coverage when complete. The VHF signals are excellent at outdoor coverage.
It's true that running a CPU uses slightly more power than 1930s FM technology. However the vast majority of radio listening is done where a power supply is available (either in-home or car-battery).
The failure of chemistry to keep up with Moore's Law is constant drag on the development of mobile technologies. However, rechargeable batteries are a few pounds - and much more green.
The final network plan should not require anyone to need a rooftop aerial for DAB. The coverage planning is all for "indoor at ground level".
The local radio DAB network is DESIGNED to provide local radio stations to their licensed area only. You can listen online, however.
It's not really "low lying" areas that will have few DAB services, it is more likely to be the unpopulated hills and valleys of Wales, Scotland and the hilly areas of England (Peak District, Dartmoor, Exmoor, Cumbria and so forth).
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PJH: I had forgotten about having to have a "head demagnetizer". I had one that looked for all the world like a "magic wand".
You've not recalled the whole awfulness of "dubbing", which was to make a copy of a cassette which would sound like a muffled version of the source. Or a very muffled version if you used "high speed dubbing".
Whatever the failing of "lossy" encoded digital audio, at least it never gets any worse, even if you copy it a billion times.
(Sorry, I should be staying on-topic!)
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Nick Anderson: yes see Digital Region Overlap | Freeview Interference | ukfree.tv - 11 years of independent, free digital TV advice please
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Tony: To be honest, you would be much batter off using a box which can deal with generic satellites.
Sky boxes can work, but you are limited to adding 20 "other channels" and they can easily be deleted by accident.
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Trevor Harris: A strange conflation of the market with Ofcom.
"The market does X" means that, when put on sales the public buys X.
An "Ofcom consultations on Y" is a moot point, and consultations have to guard against capture from interests groups.
Ofcom's duty is to serve the public as a whole.
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George Buchanan: Not even on the Map of all DAB transmitters | ukfree.tv - 11 years of independent, free digital TV advice page?
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Merliin: It's a possibility, but one that UKTV and others have discounted in the past.
I have heard from two Freeview channels that they plan to go on Freesat.
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Trevor Harris: Freesat will benefit if there are more FTA channels.
Just like "Freeview" would benefit from more DTT capacity.
Neither owns the content. It's just the name by which the services are promoted.
This is much in the way that Sky also doesn't own a single satellite, it just "rents" them too.
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Wednesday 18 September 2013 4:30PM
Stuart Owens: DAB transmissions are vertically polarised only.