Sigillography, n. ~ The study of seals. Rt: seal signature

sound recording (also audio recording), n. ~ Any medium capable of capturing and
reproducing an audible signal.
Syn: phonorecord
NT: phonograph record
Notes: ‘Sound recording’ is a generic term used to encompass a wide range of
formats, including phonograph records, magnetic tape, compact discs, and com-
BT: Broader Term • NT: Narrower Term • RT: Related Term • DF: Distinguish From
365 special sign
puter files. The term does not include multimedia recordings that include sound,
such as the soundtrack on a motion picture.
†281 (USC, 17 USC 101): Copyright · Works that result from the fixation of a
series of musical, spoken, or other sounds, but not including the sounds accompanying
a motion picture or other audiovisual work, regardless of the nature of the
material objects, such as disks, tapes, or other phonorecords, in which they are
embodied.
Soundex, n. ~ A technique to create a phonetic index, making it possible to look up a
name or word using a coded form of its sound rather than spelling.
RT: phonetic index
Notes: The Soundex system was initially patented by Robert C. Russell in April
1918 (US patent 1,261,167). Soundex is sometimes used generically to mean any
phonetic index.
soundtrack, n. ~ 1. Moving images · The portion of a film or moving image recording
that is reserved for the audio signal. – 2. Moving images · A commercial
recording of the music from a motion picture.
Notes: In motion pictures on film, the soundtrack1 is a physically separate area
in which the audio signal is recorded. The soundtrack is commonly an analog signal
recorded as patterns of light and dark running parallel to the frames that make
up the picture. The signal may also be recorded on a magnetized strip that is
coated along the length of the film. In digital and magnetic recordings, the soundtrack
is usually a separate channel from the visual signal. – A soundtrack2 is not a
complete transcription of the audio portion of a film. It excludes most or all dialog
and includes only the music.
source document, n. ~ 1. Reprographics · The original from which a copy is made.
– 2. Computing · A document containing information entered into a computer
during data entry; an input record.