Publicité
Listening to DAB broadcasts
Chapter 5:
Listening to DAB broadcasts
Ensemble
Service
Components
About DAB (Digital Audio
Broadcasting)
• Since the DAB system is broadcasted in
digital format, DAB system can supply
crystal-clear audio and stable reception
even in mobile objects. DAB is a new
generation radio which can provide data
service and supplementary multi-media
services.
• DAB broadcasts multiple services under
one ensemble called service components.
• Each component contains unique
programs: news, music, sports, and any
more.
• Each ensemble and service component
has its label, and users can recognize a
current broadcasting station and service
contents by using the label.
DAB Service Diagram
DAB Signal
National DAB
(Service 1)
(Service 2)
Alpha 1
Parliament
(Primary)
(Secondary)
Pop Music
News
(Service 3)
(Service 4)
Alpha 2
Alpha 3
Alpha 4
Sports
Classic
Educate
• The main service component is broadcast
as Primary while the others are broadcast
as Secondary.
• Rich character information is supported
through dynamic labels, including such
information as song title, artist composer
etc.
Ensemble Name
Station Name
Programme type
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