[App_rpt-users] Distorted audio in app_rpt/Allstar

[Andreas Pleschutznig]

Hi Jon

I do not believe this is distorted audio because it is too low or too high. The audio has been measured in with the help of a service monitor and I just checked it. Both channels are set to values around 100. Also distorted because it is set too high or too low sounds different than what I am seeing here. 

Best I can describe the effect is that the audio is time sliced in 20ms packets and every other packet is missing, left out. and it does not happen when audio is especially loud or quiet. Sometimes it happens on the time announcements, which are absolutely perfect 99% of the time. 

 
--
Andreas Pleschutznig, Cell: (832) 633-7817, Sent: MacBook
 KA5PLE, Allstar: 29841, Echolonk: 884823

On Sep 11, 2013, at 6:51 AM, Jon Rorke <jrorke at cogeco.ca> wrote:

> I have seen this before. 
> What is the TX voice setting on y our node? If its any where near 900 then it may be trying to drive your TX but is running out of room.
> Do you have TX boost turned on in USBradio.conf? 
> 
>> hdwtype=0    
>> rxboost=0
>> txboost=1
> 
> If not turn it on then retune the TX voice. If you can TX voice near 500 (Mid scale) then you have a better chance of not having the audio distort on some peaks.
> The same would be true if your TX voice setting is near 100 to 200 and you are over driving the TX a little. In this case then turn off TX boost in USBradio and retune. 
> 
> Give this a try ans see if this helps.
> 
> Jon VA3RQ
> 
> On 9/10/2013 7:38 PM, Andreas Pleschutznig wrote:
>> Good
>> 
>> sometimes, i get distorted audio locally on the repeat and also on simple announcements like the time announcement. If and when I get that distorted audio it kind of sounds as if the audio stream is sampled i 20ms increments and every other piece is left out. This happens only every now and then, while most of the time the audio is absolutely perfect. 
>> 
>> As hardware is a nondescript 2GHz dual core, (all-star uses about 15-25% CPU), so it should not be a speed problem. Two URI’s are connected to this PC, one for the public all-star link, the other to a private GMRS node, 
>> 
>> Tried two different radios, so it should not be the radio either, unless two unrelated GM300s have exactly the same problem (For the time being I’ll go under the assumption its not the radio) I don’t know yet if that ever happens on the TCP end, but I doubt it. 
>> 
>> Does anyone have *ANY* idea what that could be?
>> --
>> Andreas Pleschutznig, Cell: (832) 633-7817, Sent: MacBook
>>  KA5PLE, Allstar: 29841, Echolonk: 884823
>> 
>> 
>> 
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> 
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