ARLA/CLUSTER: Entrevista com VK5DGR sobre um Codec Livre para o Radioamadorismo.

[João Gonçalves Costa]

[http://cdn.idg.com.au/gim/id/11305/res/18]

Free Telephony Project founder David Rowe, VK5DGR

Interview with Codec developer VK5DGR

One of the limitings factors in Amateur Radio experimen-tation with Digital Voice has been the lack of suitable Open Source Codecs.

David Rowe VK5DGR hopes to change that.

A Codec converts audio into a digital data stream and at the receiving end converts that data back to audio.

Amateur Radio is in need of two Codecs. One for high quality voice on VHF/UHF maybe using 5 kHz channels, the other a lower data rate version for HF that could be carried in a bandwidth of less than 1.5 kHz.

Recent experiments by Radio Amateurs with digital voice on HF have been very successful but they relied on the use of a proprietary software Codec and were at variance with copyright restrictions. For HF digital voice to progress an Open Source Codec is needed.

Read the Open Source Identity interview with Free Telephony Project founder David Rowe VK5DGR at
http://www.cio.com.au/article/264806/open_source_identity_free_telephony_project_founder_david_rowe/

David Rowe VK5DGR Codec2 Blog
http://www.rowetel.com/blog/?p=128

The Codec2 Project
http://codec2.org/

Open source DSTAR voice - Codec2
http://www.southgatearc.org/news/june2010/dstar_codec2.htm
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