Changes between Version 95 and Version 96 of FAQ

Timestamp:

Aug 4, 2010 6:18:21 AM (14 years ago)

Author:

bennylp

Comment:

--

FAQ

@@ -269 +269 @@
 On typical PC, normally it's the sound device and jitter buffer that contribute the most latency, so this article will try to present how to optimize these settings. Codec latency is determined by the codec algorithm and its {{{ptime}}}, but normally it shouldn't add too much latency; maybe around 20 to 30 ms. The default resampling algorithm in PJMEDIA adds about 5 ms latency. I have no idea about AEC latency. Network latency, well, we can't do anything about it.
 
+==== Use Audio Switchboard ====
+
+If you don't need conferencing, you may want to consider replacing the conference bridge with the [wiki:Nokia_APS_VAS_Direct#switchboard audio switchboard] which does very minimum buffering to the audio. You will loose conferencing feature, but as a bonus this will lower CPU usage too. 
+
+To use the audio switchboard, declare this in your {{{config_site.h}}}:
+
+{{{
+ #define PJMEDIA_CONF_USE_SWITCH_BOARD 1
+}}}
+
 ==== Choosing lower audio frame length ====
 
@@ -318 +328 @@
  The jitter buffer implementation has been modified and it should reduce latency significantly. 
 
-
-==== Use Audio Switchboard ====
-
-If you don't need conferencing, you may want to consider replacing the conference bridge with the [wiki:Nokia_APS_VAS_Direct#switchboard audio switchboard] which does very minimum buffering to the audio. You will loose conferencing feature, but as a bonus this will lower CPU usage too. 
-
-To use the audio switchboard, declare this in your {{{config_site.h}}}:
-
-{{{
- #define PJMEDIA_CONF_USE_SWITCH_BOARD 1
-}}}
 
 === How to run PJSUA without sound device? === #no-snd-dev