Library of Congress >> MARC >> Bibliographic >> 00X  >> 007 >> 007 (Sound Recording)

007 - Sound Recording (R)


MARC 21 Bibliographic - concise
April 2014

Disc, tape, film, cylinder, or wire on which sound vibrations have been registered so that the sound may be reproduced; and paper rolls on which the notes of a music composition are represented by perforations in the paper and from which sound can be mechanically produced.

Character Positions

00 - Category of material
s - Sound recording
01 - Specific material designation

Special class of sound recording to which the item belongs (e.g., a cylinder).

d - Sound disc
e - Cylinder
g - Sound cartridge
i - Sound-track film
q - Roll
s - Sound cassette
t - Sound-tape reel
u - Unspecified
w - Wire recording
z - Other
| - No attempt to code
02 - Undefined

Contains blank (#) or a fill character (|).

03 - Speed

Playback speed of the sound recording.

a - 16 rpm (discs)
b - 33 1/3 rpm (discs)
c - 45 rpm (discs)
d - 78 rpm (discs)
e - 8 rpm (discs)
f - 1.4 m. per second (discs)
h - 120 rpm (cylinders)
i - 160 rpm (cylinders)
k - 15/16 ips (tapes)
l - 1 7/8 ips (tapes)
m - 3 3/4 ips (tapes)
o - 7 1/2 ips (tapes)
p - 15 ips (tapes)
r - 30 ips (tape)
u - Unknown
z - Other
| - No attempt to code
04 - Configuration of playback channels

Configuration of playback channels for a sound recording.

m - Monaural
q - Quadraphonic, multichannel, or surround
s - Stereophonic
u - Unknown
z - Other
| - No attempt to code
05 - Groove width/groove pitch

Width of the groove of the recording for discs or the pitch of the groove for cylinders.

m - Microgroove/fine
n - Not applicable
s - Coarse/standard
u - Unknown
z - Other
| - No attempt to code
06 - Dimensions

Diameter of an open reel or disc, or the dimensions of a cassette, cartridge, or cylinder.

a - 3 in. diameter
b - 5 in. diameter
c - 7 in. diameter
d - 10 in. diameter
e - 12 in. diameter
f - 16 in. diameter
g - 4 3/4 in. or 12 cm. diameter
j - 3 7/8 x 2 1/2 in.
n - Not applicable
o - 5 1/4 x 3 7/8 in.
s - 2 3/4 x 4 in.
u - Unknown
z - Other
| - No attempt to code
07 - Tape width

Width of the tape.

l - 1/8 in.
m - 1/4 in.
n - Not applicable
o - 1/2 in.
p - 1 in.
u - Unknown
z - Other
| - No attempt to code
08 - Tape Configuration

Number of tracks on a tape.

a - Full (1) track
b - Half (2) track
c - Quarter (4) track
d - Eight track
e - Twelve track
f - Sixteen track
n - Not applicable
u - Unknown
z - Other
| - No attempt to code
09 - Kind of disc, cylinder or tape
a - Master tape

Final tape production master that is used to make a disc master or a tape duplication master.

b - Tape duplication master

Sound tape produced from the master tape.

d - Disc master (negative)

Negative disc master that is used for the preparation of the mother from which more serviceable and longer lasting metal stampers can be made.

i - Instantaneous (recorded on the spot)
m - Mass-produced

Includes discs or tapes issued as limited pressing or limited issue for private distribution.

n - Not applicable
r - Mother (positive)

Exact copy of the original disc recording pressed from the disc master. From the metal mother a negative metal stamper is made to press discs for distribution.

s - Stamper (negative)

Negative metal part, produced from the mother in an electroplating procedure, from which 500 to 750 discs may be pressed.

t - Test pressing

Either one finished disc or one of a very limited pressing is made, designed to be examined aurally before a decision is made to proceed with a pressing.

u - Unknown

Type of disc, cylinder, or tape is not known.

z - Other
| - No attempt to code
10 - Kind of material

Kind of material used in the manufacture of sound recordings (both instantaneous and mass-produced).

a - Lacquer coating
b - Cellulose nitrate
c - Acetate tape with ferrous oxide
g - Glass with lacquer
i - Aluminum with lacquer
l - Metal
m - Plastic with metal
p - Plastic
r - Paper with lacquer or ferrous oxide
s - Shellac
w - Wax
u - Unknown
z - Other
| - No attempt to code
11 - Kind of cutting

Kind of cutting of the grooves used on a disc.

h - Hill-and-dale cutting

Vertical cutting, with no lateral information intended for reproduction.

l - Lateral or combined cutting
n - Not applicable

Compact audio discs are coded n as they are pitted rather than cut.

u - Unknown
| - No attempt to code
12 - Special playback characteristics

Playback characteristics for sound recordings, including special equipment or equalization necessary for proper playback. This code is not used to indicate special processes used during recording unless those processes must be applied during playback.

a - NAB standard

National Association of Broadcasters (NAB) standard was used for the transcription of the recording and NAB playback equalization is required.

b - CCIR standard

Comité consultatif de la radiodiffusion (CCIR) standard was used for the transcription of the recording and CCIR playback equalization is required.

c - Dolby-B encoded
d - dbx encoded
e - Digital recording
f - Dolby-A encoded
g - Dolby-C encoded
h - CX encoded
n - Not applicable
u - Unknown
z - Other
| - No attempt to code
13 - Capture and storage technique

How the sound was originally captured and stored. Re-releases of recordings should be coded for the original capture and storage technique, even though such re-releases may have been enhanced using another technique.

a - Acoustical capture, direct storage

Usually a disc or cylinder recording, captured using an acoustical horn and diaphragm and stored directly on a master surface. Most acoustical recordings date from before 1927/29 when electrical recording equipment became available.

b - Direct storage, not acoustical

Disc recordings captured using electrical equipment and stored directly on a master surface. All recordings made with microphones and other electrical equipment prior to the availability of magnetic recording techniques in the late 1940s used direct storage.

d - Digital storage

Sound recordings which were captured electrically and stored using digital techniques.

e - Analog electrical storage

Sound recordings which were captured using electrical techniques and stored as modulations and pulses on a magnetic surface. Most recordings made from the late 1940s until early 1980s are analog electrical recordings.

u - Unknown
z - Other
| - No attempt to code

Library of Congress >> MARC >> Bibliographic >> 00X  >> 007 >> 007 (Sound Recording)
(04/28/2014)
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