6
DAB+
function
6.1
What is DAB+
DAB+ is a new digital format that allows you to hear crystal clear sound without
interference. Unlike traditional analogue radio stations, DAB+ broadcasts multiple
stations on the same frequency. This is called a multiplex. A multiplex consists of a
radio station and several service components or data services that are broadcast
individually by the radio stations. More information can be found at www.emitel.pl.
6.1.1
Data
compression
Digital radio uses the effects of the human ear. The human ear does not perceive
sounds that are below a certain minimum volume. Data that is below the so-called quiet
hearing threshold can therefore be filtered out. This is made possible by,
that the digital data stream also contains the relative volume of each unit of information.
Furthermore, in an audio signal, the quieter units are superimposed on the louder ones at
a certain threshold value. All sound information in a piece of music that is below the so-
called monitoring threshold can be
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