[App_rpt-users] Mini Computers

Sun Feb 4 22:35:09 UTC 2018

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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