BS 1000-681.8..9(1972) : AMD 1170

Co-operating organizations
Foreword
Notes on auxiliary signs and subdivisions
Explanation of other symbols used in the schedule
Schedule
681.8 Technical acoustics. Musical instruments
Scope
Related subjects
Principal divisions
681.81 Musical instruments in general
681.816/.819 Individual instruments
681.82 Mechanical musical instruments
681.83 Teaching aids and other auxiliaries for
              music
681.84 Sound recording and reproduction
681.85 Production of recording media. Records
681.88 Acoustic detection devices
681.89 Other acoustic devices and instruments
681.9 Engraving and sculpting machines.
              Reproduction of relief figures
Scope
Related subjects
Principal divisions
681.92 Equipment for pyrography, chasing,
              engraving etc
681.93 Equipment for reproducing relief forms
681.94 Graving, engraving equipment
Alphabetical subject index
Survey of UDC editions

Provides classed musical instruments and sound recording and reproduction, apparatus and accessories. Does not include acoustical principles, which come under 534, nor the technique and performance of music on individual instruments, which come under 78. Sound recording and reproduction in cinematography come under 778.5, but the mechanisms involved are classed here.