Analog Optical Recording

Discussion in 'The Cutting Edge' started by OldADC, Feb 5, 2018.

  1. OldADC

    OldADC Member

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    I did see where BestBuy and other retailers were no longer going to stock CDs. I guess ever dog has its day but doesn't this also mean that there are essentially no physical media formats that are being full range commercially supported? Thus music has become digital only...and you are quite correct that it is only a small percentage of consumers who actually care about fidelity as a major criteria. Serious swimming upstream for any physical media, new or well established, it would seem.
     
  2. OldADC

    OldADC Member

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    Interesting. The moderators moved this to "The Cutting Edge" and everyone appears to have lost track of it, or suddenly lost interest. Hmmm
     
  3. Pio1980

    Pio1980 AK Member Subscriber

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    I'm still here on board.
     
  4. j_loop

    j_loop AK Subscriber Subscriber

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    I'm subscribed so not matter where this thread goes I'll be there.
    I have mused about this a bit the past few days and all I have to show for is as follows:

    What are the virtues and/or desires of the optical analogue system for archival purposes? I mean this namely for analogue source material. Would it be considered "truer" to the source and thereby desirable to record companies or the Library of Congress types or do you think they feel just fine with digital storage? If it would pose a 1:1, or close to, clone of a tape master it may have interest since they would no longer have to keep reusing the same master tape every time they want to reissue something and risk degrading the master source. If they would express interest this could be a huge market for the technology and/or service.

    re: The aformentioned new suspension system for cartridges: If this would end up as a high compliance and low tracking force system it would be a great addition to the market. The market seems mostly populated with 1.7-2.5g and medium-ish compliance carts. A new 1g, high compliance cart would be a breath of fresh air in my opinion.
     
  5. Pio1980

    Pio1980 AK Member Subscriber

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    Re archive use. How robust is the result of the process? Tho' imperfect, engraved recordings are as robust as the base material.
     
  6. kickitagain

    kickitagain New Member

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    Dear oldadc,
    I would encourage the use of magnetic fluids in a cartridge because it makes sense to me.There have been so many applications of that technology (shock absorbers),that are fascinating.I would think something amazing could be created using new materials and imagination. Please, please ,please , make something different!
    I can not relate at all to optical as analog. Hit me with a sledgehammer, I'm not gonna get it! Practically speaking, ain't nobody buy'n that stuff your sell'n. However , I would hope that someone, somewhere,would invest in your technology, just 'cause!
    The old build it and they will come (maybe). I always liked the freak show at the county fair too!
     
  7. OldADC

    OldADC Member

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    Good to see you're still with us, Pio!! The materials involved are exceptionally robust.....as in space craft robust. Which leads to my answer to j_loop....
     
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  8. OldADC

    OldADC Member

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    Location:
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    Excellent input and much appreciated. The materials involved indeed could set an archival benchmark. I hadn't really thought about that one. It would be a faithful, purely analog recording of the music played and could well serve as an input stream to be digitized again and again as sampling techniques changed or got better. And it could be recorded in lieu of a master tape....play the role of the master tape....call it the master burn.

    Thanks a bunch.
     
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  9. OldADC

    OldADC Member

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    Ferrofluids were just coming on the market as a new material when I was at ADC and we did use them early on in the motor gap of some speaker drivers. One of the earliest to do so when Roy Cizek was there. Those who remember Paragon and Mark Deneen will also remember the B100 preamp that he did at ADC. Much later he opened Juicy Audio for a while with hand built custom tube preamps and the like. Ahh, those were the days.

    Generally, the viscous fluids used to host the magnetic particles in ferrofluids are pretty high in viscosity and unsuitable for cartridges. I would have to look and see what the range of fluid viscosity offered these days might be. To high a viscosity simply appears as a high impedance (drag if you will) to free stylus motion while the magnetic effects are difficult to maintain linearity. But those lessons were learned too long ago to assert that they still hold true. Worth another look....

    Thanks so much for your input. Much appreciated.
     
  10. dmckean

    dmckean AK Subscriber Subscriber

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    This thread is very interesting I would be on board for this. I think it would be a very niche product though, with a level of interest similar to something like The Tape Project.

    http://tapeproject.com/
     
  11. OldADC

    OldADC Member

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    Very similar! Thanks. Very interesting. This would be taking those same master tapes and recording analog optical from them just as this project is making reel-to-reel from them.
     
  12. soundmig

    soundmig AK Subscriber Subscriber

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    Finally found this thread again - very interesting!!!
     

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