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Re: AES-EBU Dropouts
To: CRTech <crtech@crtech.org>
Subject: Re: AES-EBU Dropouts
From: Tom Van Gorkom <tomvangorkom@gmail.com>
Date: Thu, 30 Mar 2017 14:23:31 -0500
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I'm not super experienced with digital but I know that if you overdrive the audio levels at the input it will drop out intermittently and those little peaks are hard to see. Make sure your input levels are allowing plenty of head room.

Tom Van Gorkom
Radio Esperanza Engineering, KRIO AM/FM, KOIR FM
Office: 956-380-8150  
Cell: 865-803-7427

Rio Grande Bible Institute
4300 S US Hwy 281
Edinburg, TX 78539

On Thu, Mar 30, 2017 at 1:16 PM, Matthew Chambers <mchambers@showmeham.info> wrote:

I'd do what Nathaniel deccribes, feed AES audio from the ENDEC along with a relay signal to Axia, and tell Axia on the relay closure to route ENDEC audio to both SpiritFM and Pulse Channel airchains.

Matthew Chambers, CBT, NR0Q

On Mar 30, 2017 1:11 PM, "Nathaniel Steele" <nathaniel.steele@icloud.com> wrote:

I’ve got mine on three stations, but we use our logitek AE-3s to do the switching. Sage relay and AES out go to the logitek, when the relay trips the logitek routes Sage AES in to the three stations outputs. You could do this with axia, wheatnet, other AOIP or with an AES distribution amp and some AES switchers…..for one station you wouldn’t need the Dist, just a switcher.


From: Chris Wygal [mailto:cmwygal@gmail.com]
Sent: Thursday, March 30, 2017 11:43 AM
To: CRTech <crtech@crtech.org>
Subject: Re: [CRTech] AES-EBU Dropouts


Floyd, how do you bypass the AES passthrough on the Sage? Will it still interrupt and output AES properly?

I've avoided  the in and out on it because of the same problem.


On Thu, Mar 30, 2017 at 1:33 PM, Floyd E Turner <fet3eng@gmail.com> wrote:

I had similar problems in an AES air chain, ended up being the Sage EAS AES pass-through. Bypassed it and the problems quit. 




Sent via the Samsung Galaxy Note® 4, an AT&T 4G LTE smartphone

-------- Original message --------
From: "Allard, Mark G" <MGAllard@unwsp.edu>
Date: 3/30/17 12:23 PM (GMT-06:00)
To: CRTech <crtech@crtech.org>
Subject: RE: [CRTech] AES-EBU Dropouts

Random thoughts:


*Cable length?  Could be too long.

*Check all connections for connectivity.

*Balanced AES is typically 5v p-p but you need a scope to see that.  Hand-held meters may not have high enough bandwidth.

*Impedance? 110 ohm runs.

*Sync?  I assume you are coming from an xNode?  When intermittent, is the ‘sync’ indicator on the xNode stable?

*Master/Slave sync.  Maybe make sure your Axia sync system is configured ‘normal’.

*Axia puts out 48KHz.  Make sure your destination is sync’d to the ‘house clock’ of Axia.

*Your processor most likely has SRC on its input but if the internal clock of the processor is not sync’d with Axia, the processor’s SRC buffer may have trouble keeping up and you would get holes in your audio.


Mark A


From: Jim McDermott [mailto:jim@spiritfm.org]
Sent: Thursday, March 30, 2017 11:15
To: CRTech <crtech@crtech.org>
Subject: [CRTech] AES-EBU Dropouts


I admit, I've never done much in the digital audio realm, but when I got a new processor and could link up through AES-EBU, I'd thought try it. Somewhere in the chain, however, I'm getting short dropouts, maybe 1/2 to 1 sec. They are very sporadic and unpredictable, but may happen only three times a day up to several times an hour. I had to make a cat 5 to xlr adapter to get from the Axia out to the Sage Endec in. When it works, it sounds fine.  Any thoughts?

Jim McDermott
President, Lake Area Educ Broadcasting
Spirit FM Radio & The Pulse Channel

Lake of the Ozarks, MO
www.spiritfm.org -- www.pulsechannel.org



Chris Wygal

Audio Concepts <------side gig

Audio Production,Mixing & Mastering

Radio Magazine <-----writing gig

The Journey <------full time gig
Operations Manager




References: RE: AES-EBU Dropouts
(Floyd E Turner <fet3eng@gmail.com>, 30 Mar 2017 17:33:41 -0000)
Re: AES-EBU Dropouts
(Chris Wygal <cmwygal@gmail.com>, 30 Mar 2017 17:43:20 -0000)
RE: AES-EBU Dropouts
(Nathaniel Steele <nathaniel.steele@icloud.com>, 30 Mar 2017 18:11:17 -0000)
RE: AES-EBU Dropouts
(Matthew Chambers <mchambers@showmeham.info>, 30 Mar 2017 18:17:01 -0000)
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