[QuadList] OT: Seeking box (or boxes) to adjust audio levels within SDI s...

[Chill315 at aol.com]

Ted
 
What you have to do is de embed the AES stream.  Then modify it  and re 
embed it.  Grass Valley had some modules in the MAX series that did  this.  
They appear on EBay a lot.  The time delay will not be an issue  for this part 
of the process.  The time delay to be concerned about is the  level 
processing that you require.
 
Chris Hill
WA8IGN
 
 
In a message dated 9/21/2011 10:28:42 A.M. Eastern Daylight Time,  
ted at quadvideotapegroup.com writes:

Howdy from where it's just getting light in the US.



I'm trying to solve a problem involving an SD-SDI signal with embedded  
digital audio:  We need to be able to adjust the audio level within the  stream 
before it hits any other downstream devices.


The level adjustment can't cause any picture to sound sync issues or  
degrade the picture or sound quality.


Any idea whether there's such a product out there?


A small box solution would be ideal, rather than a rack-mounted device.  
Rack cards in an independent, single-card housing with inboard or wall-wart  
power supply is fine.


I'll be contacting Ensemble and Cobalt again to see if they've  introduced 
something in the last 12-18 months


If you are aware of something from either or other manufacturers,  please 
contact me off-list at _ted at flashscan8.us_ 
(mailto:ted at flashscan8.us?subject=SDI%20audio%20level%20adjustment%20box--) 


New thought: A combination of boxes could work:  IE: Dis-embed the  audio, 
allow for level control, re-embed the audio.



Much thanks!



 
Ted



 
 
Ted Langdell
Secretary










=

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