Displaying 2 results from an estimated 2 matches for "4800bps".
2007 Oct 26
2
Implementation of a Speex based hardware VOCODER
...sion over phone
lines. One of our reserach goals is to implement a hardware vocoder, with low
bit rates, and a preferably free algorithm, to be used in this secure voice
system.
Actually, there is a functional system using a proprietary AMBE board
(also a very expensive one) with a bit rate of 4800bps. When I found this
project, I tought the vocoder hardware could be implemented based on the Speex
code, since it works with similar bitrates.
Is speex suitable for that? What are the main hindrances? I thought in
using some high speed uController (code would be implemented in C and ASM), or
a...
2010 Feb 05
6
Still on spandsp/app_fax and T.38
This message is pointed directly to Steve Underwood. I tought it would not be nice to directly email him with a question that interests a good part of the Asterisk community, so here it is. :)
Steve, remember a few days ago when we discussed about issues on Asterisk 1.6.1.13 and T.38 fax reception? Well I opened an issue on Mantis (https://issues.asterisk.org/view.php?id=16756) and turns out it