Re: [ARSCLIST] Mass Digitization/ 78's

[Mike Richter <mrichter@xxxxxxx>]

Andes, Donald wrote:
> As some of you may have already guessed, I'm open to crazy ideas, so I'll pursue the logic of creating 78's as an archival medium, since they have been hanging around in vaults for a good long time.
>
> But I have the following questions in regards to 78's:
>
> What is the maximum uninterrupted record time?
> What is the maximum fidelity expectation?
> Could the format possibly handle multi-channel recordings?
> If there any way to embed a video track (if you will) to address audio that is required to sync with a video source?
> Could you possible embed a data track to handle metadata since Physical labels have limited space, can fall off, or become obscured?
> In today's world of chemical regulations, is it still legal to make a 78 record, or does include some gaseous by-product, or radioactive waste?
>
> Without viable real world answers to ALL the questions above, I believe I for one would take the idea of using 78's as non-viable.
>
> Any takers?

I'll give you a cut based on conventional analogue recordings.

Maximum time: 4.5 minutes per side

Modest - optimisitically, 50-12000 Hz (db tolerance unspecified)

Multichannel would be practical only with diagonal recording - for which 
recording hardware would need to be devised.

No possibility of a video track, but one could perhaps devise a timing 
reference which could be synced with video - again, requiring new hardware.

Any or all of the storage could be digital, but to what advantage given 
the need for new hardware is hard to guess.

"78-rpm" records are still being made, though they are pressed in vinyl 
rather than in 'shellac'. In principle, virtually any medium could be 
used, so surely an ecologically acceptable one is available.

Mike
--
mrichter@xxxxxxx
http://www.mrichter.com/