Codec2 — an Open Source, Low-Bandwidth Voice Codec 179
Bruce Perens writes "Codec2 is an Open Source digital voice codec for low-bandwidth applications, in its first Alpha release. Currently it can encode 3.75 seconds of clear speech in 1050 bytes, and there are opportunities to code in additional compression that will further reduce its bandwidth. The main developer is David Rowe, who also worked on Speex. Originally designed for Amateur Radio, both via sound-card software modems on HF radio and as an alternative to the proprietary voice codec presently used in D-STAR, the codec is probably also useful for telephony at a fraction of current bandwidths. The algorithm is based on papers from the 1980s, and is intended to be unencumbered by valid unexpired patent claims. The license is LGPL2. The project is seeking developers for testing in applications, algorithmic improvement, conversion to fixed-point, and coding to be more suitable
for embedded systems."
Re:what about LATENCY? (Score:2, Insightful)
Well, the source is right there on the webpage. Why don't you download & compile it, and see for yourself? It's an alpha release so I'll guess that it's slower than it could be.
Re:Serindipidy. (Score:5, Insightful)
Congratulations on your new license!
The proprietary AMBE codec bothers me, too. I think that a closed, license-encumbered, proprietary codec is entirely inappropriate for ham radio use.
Re:Original Rationale (Score:3, Insightful)
Somebody goes to the trouble of designing a novel, patent unencumbered(ie. if you don't like the software licence, you are perfectly free to write your own implementation), codec that fits an otherwise rather underserved niche. They have the temerity to release it under a license requiring you to release your modifications to their code if you distribute in binary form and this is somehow analogous to a particularly virulent flavor of genocidal fascism?
You are really messing up the BSD crowd's reputation for being ideologically mellow compared to team GPL...
Re:Mumble integration ? (Score:5, Insightful)
These are the stories I used to enjoy. I don't realy understand them, but they make a good read.
Re:Mumble integration ? (Score:1, Insightful)
I know - dense on tech (to the point I don't understand 90% of it, but still enjoy it!), and low on FUD/hate/blah.