[arm-allstar] excessive audio delay problem

[Doug Crompton]

LaRoy,

   The problem you are seeing has been a problem in Allstar for years. It tends to be worse on a slower processor like the BBB or RPi2. We are currently working on a fix which will benefit all Allstar users. However for right now there is no cure. Setting rxaudiodelay to eliminate squelch tail in simpleusb.conf would make it worse as it would add to the delay. It is variable meaning at times it is almost lockstep and at other times several hundred miliseconds or more delay. Also depending on the receiving radios recovery time it may be better or worse. Using PL usually helps it as it slows down RX recovery time. Hang in there we will have a fix in the future. This is not a problem on a simplex node.
For those that have not experience this what you hear is a last syllable of your transmission when you release the mike. It can be annoying but is not a show stopper.

73 Doug
WA3DSP
http://www.crompton.com/hamradio


> Date: Mon, 20 Apr 2015 12:38:54 -0500
> From: lmccann at dtisp.com
> To: arm-allstar at hamvoip.org
> Subject: [arm-allstar] excessive audio delay problem
> 
> I have a Pi2 running on a GE Master Executive II repeater.
> 
> The problem I am seeing is that if I un-key my mobile too quickly, I 
> will hear the last several words that I just spoke being transmitted 
> back from the repeater.  Is this board just this slow or is there some 
> audio delay setting somewhere I am missing.
> 
> I have a bbb running on a GE Master II and it works fine.  I'm going to 
> try a Pi2 on the Master II to see if it is in the controller but wanted 
> to ask here to see if anyone has experienced the same issue.
> 
> LaRoy McCann, K5TW
> 
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