[ProAudio] Dolby A with no tones (was 4-channel program distribution format(s))

Scott Dorsey kludge at panix.com
Wed Jan 25 13:16:07 PST 2023

Yes, but it's even more than that.  The tone isn't just level, the tone is
an absolute certain indication that it was recorded with Dolby A.  When you
hear that sound, you know what you're in for and how to play it back.  If
you don't hear it, you don't know to expect it.  When the box says one thing
and the tones say another thing, all you can do is use your ears....

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