[QuadList] [Qualist] Sound in Sync

[David Dean]

Hi

As I remember it Sound in Syncs was used as a Distribution system and was not used for recording to Tape, there may have been some experiments with it, but think of doing an audio or video insert (no Preread or Frame Stores). The UK did have Stereo SIS which in effect created 4 Digital levels in the sync but this all goes back to early logic. They also used SIS on contribution circuits from OBs or the Regions. I seem to remeber BBC Reaserch Department licensed the system to Philips - Pye TVT.  A great way to get the sound a free ride with the picture keeping it in sync.

My 2 pennies

David Dean
Westpoint Television
Archiving Services 
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  ----- Original Message ----- 
  From: John 
  To: 'Quad List' 
  Sent: Thursday, June 28, 2012 12:26 AM
  Subject: Re: [QuadList] QuadList Digest, Vol 48, Issue 47


  Hi all,
  I remember the "Sound-in-sync" - many of the BBC progs we received had this, we didn't use it to my knowledge at ABC OZ

  John Miller
  Creations Unlimited
  Guyra NSW Aust.



------------------------------------------------------------------------------
  From: quadlist-bounces at quadvideotapegroup.com [mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf Of bill.spencer at northstarstudios.tv
  Sent: Wednesday, 27 June 2012 21:35
  To: quadlist at quadvideotapegroup.com
  Subject: Re: [QuadList] QuadList Digest, Vol 48, Issue 47


  Two methods I remember were the DATE system which encoded QPSK audio into the video and worked well on quad.  This was implemented by PBS to send four channels of audio.  Of course, outboard encoders and decoders were needed.

   

  The other was called 'Sound in Sync' and put a burst of digital data on the horizontal sync tip.  Some machines didn't like it too well and a variation was used where the data was put on the 'front porch' of the horizontal sync interval.  These were developed by the telephone company to get audio along with the video for no lip sync error, but subcarrier transmission beat them out for cost and simplicity.

   

  Bill Spencer

  NorthStar Studios, Inc.

  3201 Dickerson Pike

  Nashville, TN 37207

  (615) 650-6610

  CP (615) 445-5616

   



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