344 - Sound Characteristics (R)

$a - Type of recording (R)

$b - Recording medium (R)

$c - Playing speed (R)

$d - Groove characteristic (R)

$e - Track configuration (R)

$f - Tape configuration (R)

$g - Configuration of playback channels (R)

$h - Special playback characteristics (R)

$0 - Authority record control number or standard number (R)

See description of this subfield in Appendix A: Control Subfields.

$2 - Source (NR)

$3 - Materials specified (NR)

$6 - Linkage (NR)

See description of this subfield in Appendix A: Control Subfields.

$8 - Field link and sequence number (R)

See description of this subfield in Appendix A: Control Subfields.