DAB+ (and DRM) uses AAC 960 transform (FAAC implements only 1024 transform which is
effectively the most commonly used)
DAB+ uses a special framing (gathering AAC AUs in a 120ms superframe), adding a RS code
and Firecode.
So yes, it's only the encoder but it's the first time someone has implemented
these special features in open source. Free open tools for multiplexing and modulation
already exist with CRC mmbtools.
However, nobody has implemented a full and open DAB+ SDR receiver yet. There's a
partial receiver
https://github.com/andrmuel/gr-dab?source=cr but it doesn't implement
audio decoding yet.
Regards
Mathias
________________________________
De : Steve Markgraf <steve(a)steve-m.de>
À : Benjamin Hagemann <benny(a)benny.de>
Cc : osmocom-sdr(a)lists.osmocom.org
Envoyé le : Mardi 16 avril 2013 22h14
Objet : Re: DAB+ free/open encoder: fdk-aac-dabplus
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Hi,
On 16.04.2013 21:02, Benjamin Hagemann wrote:
"A new DAB+ free/open encoder is born !
Well, that's just the audio codec, but there's the well established
FAAC already... So nothing too exciting.
Regards,
Steve
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