This is Like Hotel California, you can never leave....
On 07/12/2011 05:58 PM, Jay Horenstein wrote:
Could whomever is in charge of this Phono L thing, please take me off the
email list? Thank you, Jay
On Tue, Jul 12, 2011 at 3:22 PM, Robert Wright<esrobe...@hotmail.com>wrote:
It would indeed, Glenn! Rich's last comment helped me understand this --
one of the original questions was regarding playback rpm, so I've been
thinking in terms of concert pitch, which wouldn't be affected by shrinkage,
instead of lateral pitch, i.e., the lines per inch, which certainly would.
Since Edison's team used to refer to lines per inch as 'pitch', i.e. "2
minute pitch" or "a pitch of 100 lines per inch", etc., it's easy to get
confused. It totally makes sense now. Musical pitch would indeed remain
constant. Thanks to you both for the clarification!
I guess we should be thankful that the amount of lateral shrinkage could
never exceed the amount of play in most reproducers -- more foresight from
our benevolent meisterinventor, or happy accident, who knows? :-) (Is it
ironic that they cut at 97tpi for manufactured playback at 100tpi, and 100
yrs later it's probably closer to 97tpi?)
Best, Robert
Date: Tue, 12 Jul 2011 14:30:21 -0700
From: majesticrec...@snet.net
To: phono-l@oldcrank.org
Subject: Re: [Phono-L] shrinking cylinder speed?
This follows Robert's thoughts as well (I think). This is all about
in-plane
shrinkage. So the original cylinder is longer to accommodate this
shrinkage and
the speed at which the cutter would move laterally across the cylinder
would
have to be slightly faster. However, wouldn't the recording speed still
be
160rpm?
Glenn
From: rich-m...@octoxol.com>> To: phono-l@oldcrank.org>> Subject: Re:
[Phono-L] shrinking cylinder speed?>>>> The pitch of the lead screw was
adjusted for shrink for linear shrink.
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