BS 5877:1980

Foreword
Cooperating organizations
Guide
Introduction
0. Scope
1. Characteristics of the test room
2. Number of panellists
3. Qualification of panellists
4. Positioning of the test objects
5. Reference receiver
6. Signal input
7. Characteristics of the modulation signals
8. Procedure
9. Conditions of work and instruction of the panel
10. Supply voltage and stability conditions
11. Scoring and scales of subjective grading
Appendices
A. Hearing loss frequency characteristics of men and
    women of different age groups
B. Layout of the test room
Table
1. Detailed composition of a panel

Defines procedures for comparing the acoustical performance of household radio receivers by means of subjective listening tests against a reference receiver. A subjective evaluation may be presented as an average opinion with a standard deviation.

This British Standard gives guidance on the procedures for carrying out and evaluating the results of subjective listening tests for the comparison of the acoustic performance of various types of household or similar sound radio receivers in a controlled environment, to give reproducible results. This standard describes the requirements for the test room, the composition and qualifications of the judging panel, the setting up and test procedure and the method of scoring.

NOTE 1 The use of this standard for the assessment of high fidelity equipment should be regarded as provisional (see the footnote to the introduction).

NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.