Interesting to see to edit right into the 'lucy abby' bit compared to the needledrop. I presume the CD reflects what's on the the master tapes?
On LP this 15 KHz tone is not a recording at all, but was cut mechanically into the master disk after A Day in the Life. The dates shown are of the first disk cutting for Parlophone in the UK; it was recreated at unknown dates for other master disks, but was never cut into disks by Capitol for US release. For CD it was created electronically in 1987 and put into the master digital tape used for CD production. "
I suspect the CD's version is simply an audio recording of the LP's 15 kHz tone section, record noise and all, hence the reason they are comparable to your ear.
This whole conversation has me intrigued about the technical limitations of vinyl. For example, is there a minimum or maximum frequency that can be "encoded" in vinyl (akin to the ~20Hz and 44.1kHz cutoffs on digital CDs)? Does this differ for 33s, 45s, 78s? Is there a way (based on the needle tip and equipment setup) for a knowledgeable person to precalculate the bands that the most noise interference will likely be in, and thus minimize or remove it? Etc.It's particularly pertinent as I'm planning to attempt a vinyl-to-FLAC encoding soon.
... The information you have been given so far is mostly wrong. ...
Quote from: CherylJosie on 06 December, 2012, 02:09:32 AM... The information you have been given so far is mostly wrong. ...Regrettably, so is the information you have given, for the cutting part of the process at least. (The reproduction side info is OK.) Your explanation appears to assume that the cutting stylus has the same shape as a reproduction stylus, which is far from the case. Cutting is done with a "chisel" profile stylus....[snip]
... I think you may possibly be maligning CherylJosie. ...