Talk:Double-system recording

External links modified
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I have just modified 1 one external link on Double-system recording. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive https://web.archive.org/web/20120210223529/http://www.nagraaudio.com/pro/pages/informationHistory.php to http://www.nagraaudio.com/pro/pages/informationHistory.php

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Cheers.— InternetArchiveBot  (Report bug) 02:54, 16 December 2016 (UTC)

Removed "sound camera"
I removed a link to sound camera which does not seem at all what was intended. In my searches for what systems were in practical use before magnetic recording, the only two I can find are the single-system sound-on-film processes, which wouldn't belong in this article, and the double-system sound-on-disc processes, which cut wax discs. If anyone has more info on what kind of "sound camera" was intended, please add it back, but make it more specific. Lee Choquette (talk) 03:08, 5 September 2022 (UTC)