BS 6840-13:1987

National foreword
Committees responsible
1. General
1.1 Scope
1.2 Object
1.3 Explanation of terms
2. Physical conditions
2.1 Listening room
2.2 Loudspeaker position and orientation
2.3 Listener position
2.4 Programme materials
2.5 Level setting
2.6 Electrical requirements
3. Experimental procedure and evaluation
3.1 Listeners
3.2 Test duration
3.3 Rating scales
3.4 Choice of test procedure
3.5 Instruction and preliminary trials
3.6 Number of judgements
3.7 Statistical treatment of the data
3.8 Contents of test report
Appendix A - Instructions for listening tests
Appendix B - Comparison of test length
Appendix C - Statistical treatment of data from
               listening tests
Figure 1

Setting-up, performance and evaluation of listening tests on loudspeakers intended for household systems and environments. Although designed to cover separate sound system components these procedures with minor changes could apply to radio receivers and television sets etc.