|First Indicator||Second Indicator|
# - Undefined
# - Undefined
Technical specifications relating to the encoding of sound in a resource.
$a - Type of recording
The method used to encode audio content for playback (e.g., analog, digital).
|344||##$aanalog$c33 1/3 rpm$gstereo|
$b - Recording medium
The type of medium used to record sound on an audio carrier (e.g., magnetic, optical).
|344||##$adigital$boptical$gsurround$hDolby Digital 5.1$2rda|
$c - Playing speed
The speed at which an audio carrier must be operated to produce the sound intended.
$d - Groove characteristic
The groove width of an analog disc or the groove pitch of an analog cylinder.
$e - Track configuration
The configuration of the audio track on a sound-track film.
$f - Tape configuration
The number of tracks on an audiotape.
$g - Configuration of playback channels
The number of sound channels used to make a recording (e.g., one channel for a monophonic recording, two channels for a stereophonic recording).
$h - Special playback characteristics
An equalization system, noise reduction system, etc., used in making an audio recording.
$0 - Authority record control number or standard number
$2 - Source
Identification of the source of terms when they are from a controlled list.
$3 - Materials specified
Part of the described materials to which the field applies.
$6 - Linkage
$8 - Field link and sequence number