Astra Digital Radio {Digital Radio} over satellite, compatible with analog television transmissions. Alternatively the normal TV subcarriers can be modulated by a {MPEG-1 Layer-2} 48 kHz 192 kbps signal. Quality is better than analog carriers and only needs half the {bandwidth} (analog stereo = 2 carrier, digital stereo = 1 carrier). Quality is limited and the data rate can't be increased. (2001-12-13)
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