[App_rpt-users] Audio Delay During Duplex SimpleUSB

[Ed Wilhelm]

When I stop and think about it, have never heard myself while using iaxrpt.

It doesn't really bother me, but is seems to bug some people a lot, so 
was looking for a fix.

I'll give the USB Radio a try. Got to admit it may  be awhile. Too lazy 
to drag service monitor to repeater and re-diddle levels LOL.

Ed W8VT

On 11/18/2018 9:13 PM, Mike wrote:
>
> 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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