[App_rpt-users] Audio Delay During Duplex SimpleUSB

[Mike]

Well,

I never hear myself 'after I unkey' if using iaxrpt on a dahdi node. 
Including on a Pi3

But using  one of the radio nodes (with a radio) that use simpleusb on 
the same server does create that effect.

Perhaps it is not a proper observation for compare since a direct iax 
stream is not exactly the same handling/buffering.

...mike/kb8jnm

On 11/18/2018 8:00 PM, Tim Sawyer wrote:
> Mike,
>
> The variable audio delay happens with RTCM's too.
>
> Are you running full duplex DAHDI to a device some how? I don't 
> understand how you know that this never happens with the DAHDI driver.
>
> On Sun, Nov 18, 2018 at 8:30 AM Mike <mm at midnighteng.com 
> <mailto:mm at midnighteng.com>> wrote:
>
>     Ed, ya know I have had the same issue and never had time to fully
>     investigate it. Was never a major issue for me, just a annoyance.
>
>     It seems to vary in it's delay and I was looking for other
>     processes in memory slowing it down and found nothing and always
>     has plenty of cpu and ram.
>
>     Nodes with dahdi driver are never a issue on the same server.
>
>     Could be some interference with cpu time-slice etc ?
>
>     But,
>
>     It seems to correspond to me when I did switch to simpleusb this
>     year so I would say try it with usbradio if you have the
>     additional headroom.
>
>     Perhaps I will switch back as well. It's worth noting and trying.
>
>     ...mike/kb8jnm
>
>     On 11/18/2018 11:11 AM, Ed Wilhelm wrote:
>>     Been running SimleUSB on my repeater for sometime. All works well
>>     except for the variable audio delay, sometimes will hear the end
>>     of my own transmission. Know this issue has been around for
>>     awile. Someone said try USBRadio, but would think that would use
>>     even more processing and agrevate the situation.
>>     This is running latest version of ASL on a Raspberry Pi2.
>>     Any input appreciated.
>>
>>     Ed W8VT
>>
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> -- 
> Tim WD6AWP
>
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