Speex dev - Nov 2005 - Question from XM Radio

Hello folks.  I understand this is the development email address, but I
don't have any others to use, maybe you can help.
 
I'm an engineer at XM Satellite Radio in Washington, DC.  I'm scouting
for other low bandwidth algorithms for some voice content.  Speex looks pretty
interesting.  My goal is to find a promising codec for 2Kbps.
 
I see the download links on the pages offer various software, but the one link
for a DECODER for COOLEDIT and WINDOWS media player is dead.
 
I have installed the DBpowerAMP converter and have some files converted, but I
cannot play the SPX files in Windows Media Player.
 
Any guidance?
 
A couple of other questions
===================- Has there been any successful satellite streaming projects
using Speex?
- Has there been any projects having a decoder embedded in an IC
- If none of the above, what type of processing power for real-time
Encoding/Decoding are we talking.  Does anyone have real-time encoding/decoding
software yet?
 
Thanks for any input
____________________________________________________________________________________________
Terry Carr
Manager, Broadcast Applications
XM SATELLITE RADIO
1500 Eckington Place, NE (Flr-2, Ops Mgt)
Washington, DC 20002
Phone: (202) 380-4081 - Fax: (202) 380-4768
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You can try the Ogg DirectShow filter to get Windows support for Speex:
http://www.illiminable.com/ogg/
> My goal is to find a promising codec for 2Kbps.
You should be aware that the 2 kbps mode has quite poor quality in
Speex, a bit similar to the LPC10 vocoder.
> - Has there been any successful satellite streaming projects using
> Speex?
Not that I know of.
> - Has there been any projects having a decoder embedded in an IC
Not that I know of.
> - If none of the above, what type of processing power for real-time
> Encoding/Decoding are we talking.  Does anyone have real-time
> encoding/decoding software yet?
The source code can be compiled as fixed-point and I would think the
complexity is somewhere in the 5-10 MIPS range for encode+decode
(decoding is cheaper than encoding). 

	Jean-Marc

On Sun, Nov 27, 2005 at 03:20:07AM -0500, Carr, Terrance wrote:
> I have installed the DBpowerAMP converter and have some files converted,
but I cannot play the SPX files in Windows Media Player.
You should be able to play .spx files in Windows Media Player after 
installing the directshow filters from http://www.illiminable.com/ogg/

Hope that helps,
 -r