[App_rpt-users] Distorted audio in app_rpt/Allstar

[George Csahanin]

Mine would do it  on local as well as remote and repeat. Heck, even radio tune txaudio tone had it, pl tone had it, etc.

G

From: Andreas Pleschutznig 
Sent: Wednesday, September 11, 2013 1:06 PM
To: Bryan D. Boyle 
Cc: George Csahanin ; Kevin Custer ; app_rpt-users at ohnosec.org 
Subject: Re: [App_rpt-users] Distorted audio in app_rpt/Allstar

George, Bryan, 

the problem *I* have is not limited to a repeat. it does happen when on simple time announcements. At the time when it happens the system is at less than 35% CPU, so I kind of doubt this is a problem in the CPU being too slow. 

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

On Sep 11, 2013, at 12:56 PM, Bryan D. Boyle <bdboyle at bdboyle.com> wrote:


  DSP takes a significant amount of horsepower.  Ya don't get something for nothing; reading a hardware status bit or two is a lot less intensive at the expense of additional wiring and configuration statements in the config files than decoding the stream, deriving the signals, etc.  any overhead in doing so is bound to have an effect on other streams going on at that time.

  and we humans don't process breaks in audio as we do with visual perceptions.

  -- 
  Bryan
  Sent from my iPhone 5...small
  keyboard, big fingers...please
  forgive misspellings...



  On Sep 11, 2013, at 13:44, "George Csahanin" <george at dyb.com> wrote:


    I have that exact problem if I use DSP, moved to COS and PTT on DB25 and it stops. Did this in every case I tried, though the only platform I used was a D945 or D201 Intel board.

    Ran 1GB of RAM and CPU is whatever a D945 is. 

    GeorgeC
    W2DB
    2360


    From: Kevin Custer 
    Sent: Wednesday, September 11, 2013 11:45 AM
    To: Andreas Pleschutznig 
    Cc: app_rpt-users at ohnosec.org 
    Subject: Re: [App_rpt-users] Distorted audio in app_rpt/Allstar

    On 9/11/2013 12:20 PM, Andreas Pleschutznig wrote:



      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. 


    Sounds to me like a computer with too little RAM or too little CPU horsepower.

    When you run the top command, is it using swap memory?  If so, that's bad...and you need more RAM.

    Kevin


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