search for: doubletalk

Displaying 5 results from an estimated 5 matches for "doubletalk".

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2003 May 22
1
Macintosh OS 9.2 and SMB Networks
Some use Dave (http://www.thursby.com/products/dave.html) or DoubleTalk (http://www.connectix.com/products/dt.html). However, we use Netatalk (http://netatalk.sourceforge.net/) successfully to share the Unix/Samba file system with our Mac clients. Is there any reason you can't use Netatalk? Khanh Tran Network Operations Sarah Lawrence College -----Original Mes...
2003 Oct 10
0
Echo observations and some questions
...echo are never as well defined as they are at the point of origin of the echo (the hybrid). This is really too bad, since we don't get to do anything about the hybrid imbalance. 5) Only one of the echo cancellers in * identifies itself (Mark's original canceller is Simple LMS with Doubletalk detection#), and then, the ID is only obtained by reading the source code. While I suspect that I could decipher the algorithms used in the other cancellers if I were to spend several weeks studying the problem, the authors already know the answer to this and should clue us in, even if only wi...
2004 Oct 04
3
echo cancellation: the never-ending quest for truth
Asterisk apparently has five echo cancellation algorithms: STEVE, STEVE2, MARK, MARK2 and MARK3. The current default appears to be MARK2. My question is, has anyone had any experience with any of the others (other than MARK2), and is there some conventional wisdom as to when to use one over another? TIA Bruce Komito High Sierra Networks, Inc. www.servers-r-us.com (775) 236-5815
2005 Jul 07
4
Sipura SPA-841 Volume Oscillation Problem
Hi all, The problem is on the volume of the voice sent by the SPA-841. I think the echo cancel algorithm sets a limit to the microphone when detects sounds or noise from the earphone. This problem generates an oscillation on the voice volume sent by the phone and even turns it off completely for very little lapses of time making the communication very uncomfortable. I manage three different
2005 Oct 11
6
PRI echo issues: solvable?
Hello, After solving the other "low hanging fruit" audio issues in our Asterisk PBX, we are left with occasional cases of severe echo which we have not found a solution for yet. Our system: - Asterisk 1.2.0-beta1 - TE110P on a PRI - TDM04 and TDM40, but these are unrelated to current echo issues - Fedora core 3 - Echo canceller KB1 Most calls have minimal, acceptable echo levels. But