DAB- Digital Audio Broadcasting is the next generation of radio. DAB was developed in Europe by a consortium of broadcasters and manufacturers. DAB uses digital compression techniques to transform the source material, i.e. music and speech, into digital computer code before it is transmitted. The computer code consists of electronic ‘ones and zeros’ called binary digits or bits. The binary code is then multiplexed or grouped together to create a superior signal, when compared with the older analogue system, with the following key benefits:
• Near CD quality sound
Because DAB is binary coded, the receiving equipment is only expecting to receive a series of ones and zeros, so any other interference is ignored, resulting in very high quality audio.
• Interference free reception
Analogue systems suffer from an effect called ‘multipath distortion’. This is caused because radio waves do not behave in an orderly fashion, but bounce and reflect off buildings and mountains etc. DAB sees this as an advantage and uses the direct and reflected signals to actually reinforce the end result.
• No need to re-tune
A single DAB frequency can be used to cover the whole of the UK, so solving many of the problems experienced with the earlier analogue system.
• Scrolling Text DLS (Dynamic Label Segment)
Broadcasters can transmit text to your radio. This way you can read the name of the DJ, artist, song title or any other information that is broadcast.
• DAB coverage