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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>I just came across the discussion about digital audio on Quad.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>In Australia it was necessary to have Stereo audio on ACR25 machines for commercial replay to air.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>This was accomplished by using a unit called “VIMCAS” made by IRT electronics in Sydney and put a digital audio track in vertical blanking.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>The unit gave a stereo pair and was common in the networks here.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>