[arm-allstar] Noise on the output rpi2 and uri.

[Andrew Gilbett]

Hi All,

I have just setup a RPi2 & URI combo and it work quite well. Except it has
quite a high noise level on the tx.

I noticed that this was also the case on the beagleboard xm and lox board
combo as well. I was hoping it was peculiar to that hardware but it is not
unfortunatly.

Basically it sounds like it is being encoded with gsm  and being compressed
with noise added to it.

If I connect via IAXRPT the signal is quite clear but not perfect so there
is a little bit of noise on the input but it is the output where it is
degraded again.

I am using Simoco SRM9005 radios using the rear io on the db15.

Could someone shed a little light on the audio path through asterisk and
where noise could be coming from there?

This is for an ultra portable repeater that is carried up hills for events
and I have found that apt_rpt and asterisk is awesome because it is a
complete voip switch. Keep up the good work.

Andrew
VK2XAG
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