[78-L] BACKGROUND ARTIFACTS (WAS Hal Kemp record question)

[Steven C. Barr]

Note that supposed "background artifacts" on 1921 or earlier Pathe records 
are
NOT such...their mastering process (on an oversize vertically-cut cylinder, 
which
was in turn copied to vertical, lateral or wotever "masters") produced a 
VAST
number of low-frequency bumps, thumps and such which were inaudible on
players of that era...!

...stevenc