I test it on different computers. all of them are not Celeron processors
Sometime voice qulity makes noise a few seconds then it go back to normal.
Also remote party is good. I think there something wrong between SipXtapi SDK
audio device ( such as head side)
Thanks.
Martin
----- Original Message -----
From: Charlie Hedlin
To: [EMAIL PROTECTED]
Cc: [email protected]
Sent: Wednesday, April 25, 2007 4:06 PM
Subject: Re: [sipxtapi-dev] Voice Quality of of softphone developedwith
SipXTapi
I haven't narrowed it down, but Windows systems with Celeron processors seem
pretty sensitive to system load causing lots of call quality problems.
We also do a lot of call recording, and I suspect that the writes block and
kill the quality. I didn't figure this out in time to save our sipxtapi
project though. We are moving to a modified version of ekiga on Ubuntu linux.
I hope to be able to contribute to sipxtapi in my personal time, but that won't
be very often.
Charlie
[EMAIL PROTECTED] wrote:
Keith Kyzivat wrote:
This depends on your processor speed.
Slow processors seem to show issues with audio quality.
It's been witnessed to happen even when not using RTP, so this is a bug in
the framework, and not in the connection...
Alex Chemeris may be able to answer you a bit better.
If you search the list archives, you should be able to find some other
information on this issue.
On 4/25/07, Xiaoming wang <[EMAIL PROTECTED]> wrote:
I underclocked my processor to 900Mhz and set in task manager to use
only 1 cpu core for my wxCommunicator and there were no audio glitches
during a call. I also used netlimiter to limit in/out bandwidth to
10Kb/s and call quality was still ok. But I have low latency 100Mbit
connection.
When I tested my softphone on computers with slower connection, there
were some audio glitches so I guess it's more a problem in handling
jitter than slow cpu.
Please check out http://www.akmalabs.com/downloads_netsim.aspx , maybe
we can use it to improve jitter handling in sipxtapi.
Jaroslav Libak
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