Speex Joins Xiph To Bring Free VOIP To The Masses

xercist writes "Xiph.org has added a new project to their plate of goodies- Speex. Speex is an audio codec specifically for, you guessed it, voice. It has integration with Xiph's OGG container, but is mainly being used right now for VOIP. There is currently an XMMS plugin available, and is also supported by LinPhone, OpenH323, and GnomeMeeting. Asterisk PBX is working on adding support. This is not a new project -- Jean-Marc Valin has been hard at work writing the codec for quite a while now. However, Jean-Marc is now a full-fledged member or the Xiph.org team, and in celebration, Speex beta one is being released. Xiph.org has brought you (or is currently working on bringing you) Vorbis, Tremor, Theora, Tarkin, Icecast2, cdparanoia, now Speex, and, of course, the Moaning Goat Meter. This is a LOT to do, so please donate to show your support."

Comments

Speex sounds nice

[deathcubek]

I've been playing around with speex when i was working on an audio conferencing. It's a simple api, and the audio quality comes out okay for voice too. (unless you try sending music through, then it really just craps out)

If only I could get the windows side of the cross-platform audio caputre stuff so nice.

Re:Speex sounds nice

[jmv]

Probably something you've done. For normal use, it's between 5% and 30% on my PIII/1GHz, depending on the sampling rate (8kHz or 16 kHz, only mono supported) and the bit-rate. The encoder also has a "complexity" option similar to the -1 to -9 options in gzip.

Re:But...

[lpontiac]

Why does everyone insist we need to do absoultely everything over TCP/IP?

Voice over IP doesn't send voice data over TCP, it uses UDP. UDP isn't complicated at all - it just gives you a way to uniquely identify a machine and say "send this data to it." It doesn't even guarantee delivery of the data. It's probably the best, most accepted way of sending addressed, digital data over wires.

Now, imagine you're a company that's just put an office up. Would you rather install two sets of wires to each desk (ethernet and phone network), one of which requires you to get a licensed contractor in if you need work done on it? Or a single set of wires which can be maintained by the people who run your computers?

Speex and TAPR

[wowbagger]

I love the fact that a good, Free Software voice codec is out there, and here are my reasons:

1) Ham Radio. The Tucson Amateur Packet Radio organization is working on experimental digitized voice over amateur radio applications, and a couple of venders (mostly Kenwood) are offering radios that have this ability. Right now, TAPR are looking at using DVSI's IMBE vocoder, which is QUITE expensive and VERY not-Free. The availability of a Free codec would greatly improve the availabilty of this protocol.
2) Currently, The Association of Public-Safety Officials (APCO) (the folks who define the specs for the radios used by police, fire, and government) have defined the current digital trunked radio standard, APCO Project 25 as using DVSI's IMBE vocoder. While this is licensed under a Reasonable And Non-Discrimitory license, if you want to license the IMBE vocoder for a P-25 project, you will cough up US$100,000.00 for the privilege (I know firsthand, as the company I work for has done this). Uniden, Radio Shack, and other scanner companies are looking into putting this into their scanners, so they have had to cough it up as well. A Free vocoder would allow anybody to build a product with this capability in it - you could even use a scanner and your sound card to decode the Phase 1 C4FM format signals.

Like so many other things, a Free Software tool to do these things would greatly accelerate the industry. I hope Xiph does well.

Re:"To the masses"?

[jmv]

(I am the Speex author) There are already at least two Windows front-ends: here and here. There may be others I'm not aware of. Note that I haven't developed of tested any of these since I don't use Windows.