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@steve-m.de> À : Benjamin Hagemann <benny@benny.de> Cc : osmocom-sdr@lists.osmocom.org Envoyé le : Mardi 16 avril 2013 22h14 Objet : Re: DAB+ free/open encoder: fdk-aac-dabplus -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJRbbEDAAoJEDTskicYOO0G/uoH+gIG9iTGahAcI73zZomDsV7r UX5UShMiWg6qfxB6uA+uTVO3XtHdKoBmqpg6eHeWuAOL/zAHzgAoCk5RW1bLVaD8 sec5yr0TLz962Pr3nE9uSH9jcxtloajA9dW0DYVeLOO+UB+jNiOdqxC8wFywr6xW LQnc80DWi/fN0LcZ+8oGof9YQcDVpyB4vIzOoCNpEfmfbNo8PjRPotYDjTd0v/BW 2j8gIbiy+3bTeDax5ZcUF9HBQg+T9kufQwe/X63jW6yShD+ZLYoqH05fMpFqogtu ulwnu+PR91GjmgLMVPNyqsTJvQLaJhl4Cd8zVtAiFD5BL/CsqejOQVbEhJzX8DM= =IIXs -----END PGP SIGNATURE-----