User manual

Data compression

DAB makes use of eects of human hearing for data compression.

The human ear does not perceive sounds below a minimum volume. Data below this silence thresh-

old can therefore be ﬁltered out.

Thisispossiblebecauseeverydigitaldataowsavestheassociatedrelativevolumeincomparison

to other units for every information unit as well. In a sound signal, the louder shares also overlay the

softer shares at a certain threshold. All sound information in a piece of music that falls below the

listening threshold can be ﬁltered out of the signal to be transmitted.

This reduces the data ow to be transmitted without any perceptible sound dierence for the

listener.

Audio Stream

Audio streams are continuous data streams at DAB that contain MPEG 1 audio layer 2 frames and

thus represent acoustic information. Common radio programmes can be transmitted this way and

listened to by the receiver.

DABnotonlyprovidesradioatexcellentsoundquality,butalsoadditionalinformation.Thismayrefer

to the current programme (DLS e.g. title, interpreter) or be independent of this (e.g. news, weather,

trac, advice).

c) Operation in DAB-Mode

The device will automatically start station scanning when it is switched o for the ﬁrst time. If no

stationisreceived,"Notavailable"isdisplayed.Thismeansthateithernoreceptionispossible,or

reception is very weak. In this case, you need to change location.

• Theautomatic"Fullscan"scansallDABchannelsandthuswillndallstationsthatarebroadcast

in the reception area.

• PushtheMENU(5)buttonandselect"Fullscan"withtheTUNING(12)buttons.

• PushthebuttonENTER(11)toconrm.

• Thescanstartsandthedisplay(13)showsaprogressbar.

• Aftercompletionofthestationscan,therststationinalphanumericorderisplayedback.

 Ifno station isfound, check thealignmentof thetelescopicaerial (18) andif required,

change the site of setup of your device.

Check if DAB stations are broadcast in your area.