1237c2f18b13
tech



Hello Phil - 

PM>  Charles Angelich wrote: ---------exploding CDs 

>> As a sidenote I watched a documentary once of a Japanese
>> company that manufactured 100 year (guaranteed) paper for
>> writing contracts etc. on. I think they said they were
>> working on 200 year paper? They sold special ink for this
>> too btw. :-) I hadn't thought of that before but around here
>> I have 15-20 year old printouts that almost crumble if you
>> try to unfold them. :-\ 

PM> Yah. Standard bleached paper, I guess that would be. The
PM> Japanese btw are paper freaks, most of their art being on
PM> paper, as compared to canvas for us. They're also into inks
PM> and pens -- which is I suppose why they have a monopoly of
PM> the better marker market: Pilot, Pentel, etc. 

The inner walls of their homes are paper too, I think? 

PM> Talking of documentaries, I very vaguely recall one on this
PM> very subject quite awhile back - preserving historical
PM> stuff: paper, music, etc. Something to do with archives and
PM> the Smithsonian [?]. But I wasn't really paying attention
PM> so I may have some of this wrong. I think there was
PM> something about commercial-type run-of-the-mill CDs having
PM> -less- range on the sound spectrum than the old vinyl
PM> records, but as I say I may be mistaken. I think also
PM> mentioned was a superior type of CD that had greater range,
PM> that was coming or was already out on the market. 

With CDs using zeros and ones the range limitations are imposed
by the software writer/reader. I just read the uppper/lower
limitations for MP3 the other day and can't remember them right
now but a test program I wrote many years ago indicated that
even children usually can't hear above 18k and I know MP3 goes
to 20k possibly higher. 

>
>        ,                          ,
>      o/      Charles.Angelich      \o       ,
>       __o/
>     / >          USA, MI           < \   __\__
 

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