High Quality Content by WIKIPEDIA articles! Digital Audio Broadcasting (DAB), is a digital radio technology for broadcasting radio stations, used in several countries, particularly in Europe. As of 2006, approximately 1,000 stations worldwide broadcast in the DAB format. The DAB standard was initiated as a European research project in the 1980s, and the BBC launched the first DAB digital radio in 1995. DAB receivers have been available in many countries since the end of the nineties. DAB may offer more radio programmes over a specific spectrum than analogue FM radio. DAB is more robust with regard to noise and multipath fading for mobile listening, but DAB reception quality degrades rapidly when the signal strength isn't strong, whereas FM reception quality degrades slowly. An "informal listening test" by Professor Sverre Holm has shown that for stationary listening the audio quality on DAB is lower than FM stereo, due to most stations using a bit rate of 128 kbit/s or less, with the MP2 audio codec, which requires 160 kbit/s to achieve perceived FM quality.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.