[QuadList] Two Inch Quad Stereo Recording--NBC Burbank--PCM Audio at NBC-NY

[David Crosthwait]

Burbank's NEC router first went to Moscow (from the factory I think) for the Olympics. Then it was taken apart and shipped to Burbank and installed. It had four audio channels (?) for each video channel. At the time it was the world's largest router, only to be later beaten out by NASA's IIRC. 

David






On Aug 21, 2014, at 4:46 PM, Ted Langdell via QuadList wrote:

> 
> 
> From: Ted Langdell <ted at quadvideotapegroup.com>
> Subject: Re: [QuadList] Two Inch Quad Stereo Recording--NBC Burbank--PCM Audio at NBC-NY
> Date: August 21, 2014 4:45:12 PM PDT
> To: David Crosthwait <david at dcvideo.com>, Quad List <quadlist at quadvideotapegroup.com>
> Cc: Ted Langdell <ted at quadvideotapegroup.com>
> 
> 
> On Aug 21, 2014, at 11:01 AM, David Crosthwait via QuadList wrote:
> 
>> When NBC Burbank went stereo throughout the plant via the new Master Grid NEC router, stereo was handled via L+R and L-R per New York directive. It was determined to be a mess and was abandoned around 1983.
>> 
>> David
> 
> 
> A picture of NEC's router and mention of the use in Burbank is mentioned on the inside front cover of this Broadcast Engineering issue:
> http://www.americanradiohistory.com/Archive-Broadcast-Engineering/BE/70s/BE-1979-05.pdf
> 
> 
> David, 
> 
> Were tapes recorded with this "sum/difference" audio?  I would imagine that would make for a fun time when one of these is encountered in an archive.
> 
> The April/May 1976 issue of RCA Engineer has a comprehensive package of articles on NBC NY's facilities for switching, transmission and machine control:
> http://www.americanradiohistory.com/Archive-RCA-Engineer/1976-04-05.pdf
> 
> On Page 42, there's an article about how Pulse Code Modulation was used to put four audio channels into the video for routing within the NY facilities. What happens at VTRs is described.  There were 44 VTRs and cart machines in NY at the time.
> 
> See next post about what else is in the BE issue.
> 
> Cheers,
> 
> Ted
> 
> Ted Langdell
> Secretary
> Quad Videotape Group
> e-mail:	ted at quadvideotapegroup.com
> 
> 
> 
> 
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