[App_rpt-users] Mini Computers

Skyler F electricity440 at gmail.com
Mon Feb 5 03:25:16 UTC 2018 

For me, audio sputtering is very random, sometimes the telemetry will
sputter but the normal repeated audio is fine, sometimes opposite. It also
seems to be affected by system runtime. I have ran DIAL, and the W0JRL
image. The W0JRL image seems to be better but they both do sputter.

I just ran *904, and heard 10 "pops" within 30 seconds. These are sort of
hard to hear depending on how much they are (seems to depend on system
uptime or how good the pi feels that day!) , but they are there! I am
running usbradio. I cannot deal with the simpleusb delay.


Skyler

On Sun, Feb 4, 2018 at 8:20 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
>



-- 
Skyler Fennell
amsatnet.info
KDØWHB
electricity440 at gmail.com
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