[App_rpt-users] Mini Computers

Tim Sawyer tisawyer at gmail.com
Mon Feb 5 03:59:03 UTC 2018 

My experience with the 1khz tone test Skyler mentions is that it sounds
crappy on all flavors of hardware running DIAL/ACID/Limey. Only Hamvoip
makes a clean 1khz tone. But, has been said on here many times, it's not
open source.

On Sun, Feb 4, 2018 at 7:20 PM, Skyler F <electricity440 at gmail.com> wrote:

> Please realize, I am being fairly picky! Also, please don't mention the
> HamVoip image, I know they have a precision timer, but it is not open
> source!
>
> Here is a way to tell for all you out there on a pi,
>
> Hit DTMF *904, and listen to the 1kHz tone. Count how many times it "POPS"
> or does something other than a pure 1kHz tone over a 30 second period.
> Report the channel driver you are using.
>
> Skyler
>
> On Sun, Feb 4, 2018 at 8:12 PM, JJC <cummingsj at gmail.com> wrote:
>
>> And uptime/load info during an active net tonight on the same system:
>>
>> $ uptime
>>  20:10:43 up 64 days,  5:18,  1 user,  load average: 0.18, 0.18, 0.21
>>
>> On Sun, Feb 4, 2018 at 4:54 PM, JJC <cummingsj at gmail.com> wrote:
>>
>>> I am using USBRadio on one of the nodes (the first that I checked)and
>>> here is my usb info:
>>>
>>>> *Bus 001 Device 004: ID 0d8c:013a C-Media Electronics, Inc.*
>>>
>>>
>>> JJC
>>> N0PKT
>>>
>>> On Sun, Feb 4, 2018 at 3:35 PM, Andrew Sylthe <asylthe at kc9ona.com>
>>> wrote:
>>>
>>>> I've only ever experienced strange audio issues with usbradio, and have
>>>> never had an issue running simpleusb on the Pi 3.
>>>>
>>>> On Feb 4, 2018 3:51 PM, "Tim Sawyer" <tisawyer at gmail.com> wrote:
>>>>
>>>>> I believe stuttering audio only happens on Pi nodes running USBradio.
>>>>> My understanding is the Rasperry Pi does not have enough horsepower for
>>>>> USBradio.      SimpleUSB should not a problem but if anyone knows different
>>>>> please speak up.
>>>>>
>>>>> On Sun, Feb 4, 2018 at 11:53 AM, Dave Maciorowski <wa1jhk at macski.us>
>>>>> wrote:
>>>>>
>>>>>> Hi All,
>>>>>>
>>>>>> I'd like to know more about your setups, Jay's that are working and
>>>>>> Jon and Skyler's that have issues.  Do you use simpleusb or usbradio?  What
>>>>>> USB-to-audio interface are you using including the line returned by the
>>>>>> lsusb command.  Here's mine:
>>>>>>
>>>>>> Bus 001 Device 004: ID 0d8c:000e C-Media Electronics, Inc. Audio
>>>>>> Adapter (Planet UP-100, Genius G-Talk)
>>>>>>
>>>>>> I ask because I'm chasing an interface issue that might be related.
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>>>   Dave
>>>>>>   WA1JHK
>>>>>>
>>>>>> On 2/4/2018 9:47 AM, JJC wrote:
>>>>>>
>>>>>> I wish that I had a magic formula for you.  All that I can say is
>>>>>> that we run minimal setups (least possible number of running processes and
>>>>>> installed packages) on the Pis and we are sure to use the correct audio COR
>>>>>> interfaces etc... We also are meticulous in setting up levels using service
>>>>>> monitors of all of the radios themselves.  I help to maintain a large
>>>>>> system (That Skyler has used frequently in the past) which is primarily run
>>>>>> on PIs and we have not had any of the issues that you guys are
>>>>>> experiencing.  Wish I could be of more help, but I truly do not believe
>>>>>> that it's an issue caused by the Pi.
>>>>>>
>>>>>> JJC
>>>>>> N0PKT
>>>>>>
>>>>>> On Sun, Feb 4, 2018 at 8:57 AM, REDBUTTON_CTRL <jrorke at cogeco.ca>
>>>>>> wrote:
>>>>>>
>>>>>>> I too have had the sputtering audio issues. Mostly it starts to
>>>>>>> degrade over a few days. I have run dial on Pi2 s and HP thin clients. and
>>>>>>> so far all of them need periodic reboots or asterisk restarts to clean up
>>>>>>> the audio.
>>>>>>>
>>>>>>> I am using DIAL Full DSP with tone encode and decode. Some units
>>>>>>> have 2 or 3 or nodes. Even a single node pi does it.
>>>>>>> So if you have a magic set up that fixes this I would like to hear
>>>>>>> about it.
>>>>>>>
>>>>>>> In one case I had to put back a full desk top pc to keep from having
>>>>>>> to re set on a daily basis.
>>>>>>> Pcs dont seem to suffer from the motor boating issue.
>>>>>>>
>>>>>>> Jon VA3RQ
>>>>>>>
>>>>>>>
>>>>>>> On 2/3/2018 9:26 PM, JJC wrote:
>>>>>>>
>>>>>>>> Skyler,
>>>>>>>>
>>>>>>>> I’ll have to disagree with your statements completely.  I have not
>>>>>>>> only personally load-tested but I have and know of many high traffic
>>>>>>>> systems that are running with zero “sputter” or issue.l on a Pi.  Several
>>>>>>>> have been on the air and running for well over a year.
>>>>>>>>
>>>>>>>> I am also running one system in conjunction with DMRLink and
>>>>>>>> transcoding audio (read a much heavier demand on System resources) from
>>>>>>>> DMR<->  Analog with no “sputter”.  Granted the transcoding is offloaded to
>>>>>>>> a separate chip but nonetheless.  On all of these systems running on a Pi 2
>>>>>>>> or 3 the system load from asterisk, DMRLink etc all combined never exceeds
>>>>>>>> 15% and the audio is always clean ( not withstanding network craziness ).
>>>>>>>>
>>>>>>>> So having said all of this I would look elsewhere for what may be
>>>>>>>> causing your audio ailments.  I can’t really point you in a specific
>>>>>>>> direction other than to review overall system load and performance inline
>>>>>>>> with general system administration best practices.  And of course standard
>>>>>>>> troubleshooting methods of hardware swapping/testing and validation.
>>>>>>>>
>>>>>>>> JJC
>>>>>>>> N0PKT
>>>>>>>>
>>>>>>>> Sent from the iRoad, so please ignore any typos or awesome
>>>>>>>> autocorrects
>>>>>>>>
>>>>>>>> On Feb 3, 2018, at 18:19, Skyler F<electricity440 at gmail.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>> At this point, I don't think the raspberry pi audio is as good as
>>>>>>>>> it could be on the raspberry pi. Even with a pi 3 on the best settings in
>>>>>>>>> usbradio, it will sputter every once and a while I realize Doug has
>>>>>>>>> implemented a precision timer, however, his image is not open source, and I
>>>>>>>>> cannot modify, therefore not an option for me.
>>>>>>>>>
>>>>>>>>> What is the best mini computer hardware available for reasonable
>>>>>>>>> prices nowadays that I could use in place of the pi? The raspberry pi arm
>>>>>>>>> architecture just does not seem to cut the current versions of AllStar and
>>>>>>>>> DAHDI. I realize how picky I am being, but I am sort of going crazy by some
>>>>>>>>> raspberry pi nodes i've put together with crazy sputtering issues. And the
>>>>>>>>> telemetry sometimes sounds like it is played at 1/2 speed. U
>>>>>>>>>
>>>>>>>>> Usbradio and simpleusb have their different problems, but neither
>>>>>>>>> seem to work ok. I would actually argue usbradio works better on the pi
>>>>>>>>> because it does not have an unreliable duplex audio delay.
>>>>>>>>>
>>>>>>>>> Do ATOM processers work well? Best suggestions here for something
>>>>>>>>> lightweight and non power-hungry?
>>>>>>>>>
>>>>>>>>> Thank You!
>>>>>>>>> Skyler KDØWHB
>>>>>>>>>
>>>>>>>>>
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>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Tim WD6AWP
>>>>>
>>>>> _______________________________________________
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>
>
>
> --
> Skyler Fennell
> amsatnet.info
> KDØWHB
> electricity440 at gmail.com
>
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-- 
Tim WD6AWP
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