Date:         Thu, 25 Sep 2003 15:13:59 +0000
Reply-To:     Association for Recorded Sound Discussion List
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Sender:       Association for Recorded Sound Discussion List
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From:         Don Cox <[log in to unmask]>
Subject:      Re: Optical Groove Digitization
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On 24/09/03, James L Wolf wrote:
>  Just wondering. Once the processing and storage capabilities for 3-D
> modeling of a groove arrive (10+ years?), wouldn't it also be possible
> to model a "perfect" stylus for that groove and create a result from
> their ideal virtual interaction? Would this be the best way to extract
> info from a groove?

I think not, because the purpose of a stylus is only to describe the
shape of the groove. If you already know that from your scanning
microscope (optical or electron) then you don't need a stylus.



>   But 3-D is the only way to go. Jon Noring is absolutely right; 2-D
> is a waste of time. It only reads the edge(s) of the bottom of the
> grove, the results I've heard  (under relatively good listening
> conditions) were really poor, and vertical grooves are impossible, so
> there's no point in messing with it, except maybe for emergency
> preservation of broken laquers or something similar.

Regards
--
Don Cox
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