[App_rpt-users] USB fob choppy/stuttering audio

[Mike]

If you have put the same FOB in as many machines for a test as you say 
you have, with same results...

...'it's the FOB'.

Use one like it or one different.

...mike/kb8jnm

On 3/31/2019 12:18 PM, Rob Noll wrote:
>
> Unfortunately, I don’t have one.  I’d rather not start sinking money 
> into replacing things without knowing the root cause.
>
> *From:*App_rpt-users <app_rpt-users-bounces at lists.allstarlink.org> *On 
> Behalf Of *Mike
> *Sent:* Sunday, March 31, 2019 12:15
> *To:* app_rpt-users at lists.allstarlink.org
> *Subject:* Re: [App_rpt-users] USB fob choppy/stuttering audio
>
> Try other FOB with a cm108
>
> ...mike/kb8jnm
>
> On 3/31/2019 11:58 AM, Bob Pyke wrote:
>
>     I don’t know if this fits your situation, but the only time I’ve
>     had choppy audio is when something in asterisk or Linux is
>     unhappy; most likely asterisk. I’d check your USB related settings
>     (usbradio or simpleusb).
>
>     Thanks,
>
>     Bob
>
>     K6ECM
>
>     73
>
>
>     On Mar 31, 2019, at 7:26 AM, Rob Noll <rob at nollmail.com
>     <mailto:rob at nollmail.com>> wrote:
>
>         Good morning all,
>
>         I’m trying to set up an AllStar node using a USB fob based on
>         the CM119 chip.  I’m having issues with choppy/stuttering
>         audio, particularly on telemetry.  It’s bad enough that it
>         renders the CW ID meaningless.
>
>         My original thought was lack of CPU power, but I have tried it
>         on a Raspberry Pi 2, Pi 3, and several virtual machines on a
>         quad-core PC with identical results.  Also, the choppiness is
>         NOT as bad when using the full USB driver instead of
>         SimpleUSB, which I believe conclusively rules out CPU power.
>
>         I’ve also tried a powered USB hub, thinking that the USB
>         device was not receiving enough power, with no improvement.
>
>         I’ve used the Android mobile app to connect to the node, and
>         the telemetry does not seem to be choppy when listening to it
>         over the app.  While I need to do some more testing to say
>         this conclusively, I do believe at this point that my issue is
>         narrowed down to the USB fob itself and/or the specific audio
>         stream being sent to the device.
>
>         I’m currently searching for a way to alter the sample rate
>         that ASL is sending the audio to the device in.
>
>         Has anyone experienced this, and does anyone have any suggestions?
>
>         Thanks and 73,
>
>         Rob, WX1N
>
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