Changes between Version 1 and Version 2 of sound-problems

Timestamp:

Dec 5, 2006 10:11:15 AM (17 years ago)

Author:

bennylp

Comment:

--

sound-problems

@@ -3 +3 @@
 Troubleshooting problems in the audio quality is one of the most difficult task to do with PJMEDIA, because mostly it is system specific. This page will try to provide a step-by-step troubleshooting guide to assist solving such problems.
 
+== Understanding Media Flow ==
+
+To better understand how audio media flows between media components in a call, lets use the following diagram:
+
+http://www.pjsip.org/images/media-flow.jpg
+
+
+
 == Types of Problems ==
 
-There are tooo many audio quality problems than probably those mentioned below, but anyway lets try to enumerate them and present with some kind of troubleshooting guide:
+There are tooo many audio quality problems than those mentioned below, but anyway lets try to enumerate them and present with some kind of troubleshooting guide:
 
- 1 No audio is heard on local speaker
- 1 No audio is heard by remote party
- 1 Audio is very noisy
+=== No audio is heard on local speaker during the call ===
 
+
+
+=== No Audio is Heard by Remote Party ===
+
+=== Loud Static Noise ===
+
+=== Brief Drop-Outs in Audio ===
+
+One mailing list member reported this problem in this thread:
+ http://www.pjsip.org/pipermail/pjsip/2006-November/001111.html
+
+Quoting his email:
+> Does anyone else experience brief dropouts in audio? I can easily recreate this by playing a wave file to a channel that sends it to a local SIP server that just echos the result back. It's almost impossible to go more than a few seconds without extensive glitching and pops as the sound cuts out only to come back.
+
+[[BR]]
+
+The solution that worked for him is to run the application in Release mode. Quoting his email again:
+> Seems one shouldn't use pjsip compiled in debug mode. (-g.) Going  back to optimized cleared things up.
+
+=== I'm sending tone in .WAV file from pjsua but got "stutters" on the remote side ===
+
+One mailing list member tried to stream a .WAV file containing tone to X-Lite and SJPhone and observed audio "stutters" in the receiving side. But this didn't happen when the receiving side is another pjsua.
+
+Solution: don't send tone file to these user agents, as it's suspected that they try to do something with the in-band tone. Use .WAV file containing usual speech and it should be okay.
+
+
+
+=== High jitter value observed by remote party ===
+
+
+