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  1. Vern Dias

    Who Would LOVE White Christmas In 4K And Perspecta Sound For "Holly-days" 2022

    I am not sure that everyone here understands exactly how Perspectasound works. You start with one audio channel (mono), filter any content below 50 Hz (to avoid any interacttion with the keying frequencies), and mix it with 3 subaudible (only if the theatre strictly complies with academy curve)...
  2. Vern Dias

    Who Would LOVE White Christmas In 4K And Perspecta Sound For "Holly-days" 2022

    Actually, the description of how Perspecta was used on 80 Days is not totally accurate. It was actually used on the Cinestage 4 track Magnetic (not magoptical) prints to decode the mag mono surround channel to LCR surrounds. These prints also used a non-standard anamorphic squeeze that...
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