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Tech Head - The Technology Section
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CED - Another pioneering design
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<blockquote data-quote="spiney" data-source="post: 146338" data-attributes="member: 192438"><p>Interestingly, I can remember Studio Sound magazine reporting a demo of the Soundstream optical digital audio card player, about the time CD first came out. The journalist was impressed, and suggested it might compete with CD. But, nothing more was ever heard.</p><p></p><p>The (credit card sized) audio card was supposedly just photographic film, which could be mass-copied photographically, but there's some theoretical problems with this approach! Unlike CD pressing, quality control is problematical, and you can only copy photographically one-at-a-time (although, you could have a large film sheet with many cards on!). Also, film grain size is too large to allow the recording density needed. Never mind the problem of laser "tracking" at the card edges.</p><p></p><p>The Internet mentions the Soundstream company, and especially Thomas Stockham as a digital audio pioneer, but no mention at all of his digital optical card!</p><p></p><p>Years ago, when I saw this, I never checked the magazine date, so was this an April Fool joke, does anyone know?</p></blockquote><p></p>
[QUOTE="spiney, post: 146338, member: 192438"] Interestingly, I can remember Studio Sound magazine reporting a demo of the Soundstream optical digital audio card player, about the time CD first came out. The journalist was impressed, and suggested it might compete with CD. But, nothing more was ever heard. The (credit card sized) audio card was supposedly just photographic film, which could be mass-copied photographically, but there's some theoretical problems with this approach! Unlike CD pressing, quality control is problematical, and you can only copy photographically one-at-a-time (although, you could have a large film sheet with many cards on!). Also, film grain size is too large to allow the recording density needed. Never mind the problem of laser "tracking" at the card edges. The Internet mentions the Soundstream company, and especially Thomas Stockham as a digital audio pioneer, but no mention at all of his digital optical card! Years ago, when I saw this, I never checked the magazine date, so was this an April Fool joke, does anyone know? [/QUOTE]
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CED - Another pioneering design
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