DAB+ free/open encoder: fdk-aac-dabplus

Mathias Coinchon coinchon at yahoo.com
Tue Apr 16 21:14:25 UTC 2013



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 at steve-m.de>
À : Benjamin Hagemann <benny at benny.de> 
Cc : osmocom-sdr at 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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