DAB Digital Audio Broadcasting
DAB is the technology behind digital radio transmission, employed in numerous countries around the world since 1999 (DAB is also termed Eureka 147). DAB uses techniques such as OFDM and convolutional coding, in conjunction with the MPEG1 Audio Layer 2 codec (MP2), to provide a service that is reported to be less susceptible to interference. In 2006, DAB+ was introduced as a non backwards compatible upgrade to DAB. DAB+ utilizes the AAC for improved audio encoding.
