[App_rpt-users] Distorted audio in app_rpt/Allstar

Corey Dean n3fe at repeater.net
Wed Sep 11 22:03:05 EDT 2013


I only mentioned it because it was mentioned to me from one of the people that helped work on the code.  I wasn't try to start a war against the two giants.  With that said, I will sit back and watch the thread...

Corey n3fe 

-----Original Message-----
From: app_rpt-users-bounces at ohnosec.org [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of David McGough
Sent: Wednesday, September 11, 2013 7:07 PM
To: Andreas Pleschutznig
Cc: app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] Distorted audio in app_rpt/Allstar


It never fails to amaze me how AMD CPU's get blamed for various issues--and the actual CPU's are almost never at fault! And, yes, AMD and Intel have both had an occasional "oops" impacting a specific CPU series.

In my experience, most of these "blame" issues arise from really poorly designed/buggy motherboards. Unfortunately, in practice, more of these bad boards seem to be found in low-end AMD boxes, where system builders are cutting every cost corner.

With a good quality MB, AMD and Intel CPU's both work great and exhibit similar reliability/stability....And, in case you're wondering, I run a Co-Lo center and have a few racks full of AMD boards! I measure up-times in years.

73, David KB4FXC


On Wed, 11 Sep 2013, Andreas Pleschutznig 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
> > 
> > 
> > --
> > This message was scanned and is believed to be clean. 
> > Click here to report this message as spam.
> 
> 

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