My Recent Digital vs Analog Experience

Is this your page ,

characteristics of the echo signal are described as a functioin of modulation level,

AES
slipping ... :)
Groove Echo in Lacquer Masters
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The audio signal which is transferred from modulated grooves to adjacent unmodulated grooves in a disc record is called the -echo.- The measured characteristics of the echo signal are described as a functioin of modulation level, modulation frequency, groove width, and cutting pitch (grooves per inch). It is shown that echo during the mastering process is produced by the modulation of the left (inner) groove walls and is transferred to the succeeding inner grooves.


Authors: Gravereaux, Daniel W.; Bauer, Benjamin B.
Affiliation: CBS Laboratories, Starnford, CT
CBS labs thought it was an issue Mr spelling Babylon. :D
Pretty sure they were in Stamford too
 
I have actually heard "Groove Echo" (as defined in the article) on several of my LPs. I always wondered why it happened and I had no idea that it had a name. Thanks!

doubt its groove echo you are hearing most likey tape print thru , or a serious azimuth issue
 
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