Archive for October 25th, 2006

One of the most popular household purchases made recently was a DAB radio which we use every day in our kitchen.    Not only do you get lots of extra channels, but there is a remote which changes radio stations TV style.   We listen to a lot of radio.

But I do have some reservations:    the sound quality is not always as good as FM – even on the main BBC stations received at full signal.    Strange, because I thought that digital was supposed to be pretty perfect soundwise.     Turns out it is to do with bandwidth, and there has been a whole debate on the  BBC Radio 3 website about this.   

Also, nobody has thought of a standard to synchronise the broadcasting of DAB radio.    At the moment, if you have FM radios turned on all over the house, they all play at the same time:   the pips all sound together.    If you have two DAB radios in the house, they both play at different rates – even receiving the same signal.    And of course Freeview broadcasts at a different rate again.    I don’t know about Sky.

Time was when you could put on Radio 3 for last night of the proms and it was in synch with the TV.   Not a chance now.   Terrestrial TV and freeview TV are also at very different rates.

Which begs the question …….. which set of time pips are the correct ones?    The National Maritime Museum has an interesting article on this.    Apparently the delay can be as much as 7 seconds between receivers.

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