[App_rpt-users] Mini Computers

JJC cummingsj at gmail.com
Sun Feb 4 23:54:08 UTC 2018 

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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