Subfield
Attribute
Variations
a
Category of material
s =sound recording
b
Specific material designation
d =sound disc
d
Speed
f =1.4 m per second
e
Configuration of play back
s =stereo, m = mono, q =quad, u =unknown
f
Grove width
n =not applicable
g
Dimensions
g =4 3/4 inches
h
Tape width
n =not applicable
i
Tape configuration
n =not applicable
j
Kind of disc, cylinder, or tape
n =not applicable
k
Kind of material
m =metal and plastic
m
Special playback characteristics
e =compact disc player needed
n
Capture and storage technique
d =digital, e=analog (for digital recordings derived from pre-1980 materials), u =unknown