[App_rpt-users] Distorted audio in app_rpt/Allstar

Marshall Oldham ke6pcv at cal-net.org
Wed Sep 11 19:41:34 EDT 2013


I had sound related problems with a AMD processor as well many years ago. Finally gave up and used an Intel based and all the sound
problems went away.
 
Marshall - ke6pcv 



  _____  

From: app_rpt-users-bounces at ohnosec.org [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Corey Dean
Sent: Wednesday, September 11, 2013 4:03 PM
To: Andreas Pleschutznig
Cc: app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] Distorted audio in app_rpt/Allstar


I have nothing but problems with an amd processor that I was using as my first node.  A lot of it was audio related as well.  I
can't remember if it was Steve or Jim that ask me the very same question.  I ended up trying an intel CPU on a pretty Low end
machine and all my problems went away.  I have built many nodes since for both myself and others and have never had that problem
show up again.

Corey n3fe
Sent from my iPhone

On Sep 11, 2013, at 6:39 PM, "Andreas Pleschutznig" <andy at ple.org> wrote:



Huh? Now you see me stumped. I can see some badly designed math library having a problem with that, but what does that have to do
with the processor. I am not discounting the statement, just trying to gather information, and the statement does not just come
through the filter I have in my brain as to makes sense. 

As far as the CPU goes, yes I do have an AMD chip:

[root at s02 proc]# cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 20
model : 1
model name : AMD E-350 Processor
stepping : 0
cpu MHz : 1597.148
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
fxsr_opt pdpe1gb rdtscp lm constant_tsc nonstop_tsc pni ssse3 cx16 popcnt lahf_lm cmp_legacy svm extapic cr8legacy abm sse4a
misalignsse 3dnowprefetch ibs skinit wdt ts ttp tm stc 100mhzsteps hwpstate [8]
bogomips : 3194.29

processor : 1
vendor_id : AuthenticAMD
cpu family : 20
model : 1
model name : AMD E-350 Processor
stepping : 0
cpu MHz : 1597.148
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
fxsr_opt pdpe1gb rdtscp lm constant_tsc nonstop_tsc pni ssse3 cx16 popcnt lahf_lm cmp_legacy svm extapic cr8legacy abm sse4a
misalignsse 3dnowprefetch ibs skinit wdt ts ttp tm stc 100mhzsteps hwpstate [8]
bogomips : 3194.88

[root at s02 proc]# 

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

On Sep 11, 2013, at 4:01 PM, Corey Dean <n3fe at repeater.net> wrote:


Any chance you are using an AMD processor?  If you tx tone and your voice are more than 999 combined, that could also be the
problem.

 

Corey N3FE

 

From: app_rpt-users-bounces at ohnosec.org [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Kevin Custer
Sent: Wednesday, September 11, 2013 12:45 PM
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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