BS 7827:2011

Foreword
Section 1: General
0 Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Standards and guidance with performance
   requirements
Section 2: Planning and assessment
5 Procurement
6 Need for emergency sound systems at sports venues
7 Exchange of information and responsibilities
8 Planning considerations
9 When a system is PA but not PAVA
10 Variations from the recommendations of this standard
11 The importance of a performance specification
Section 3: Engineering
12 Location and environment of emergency microphones
13 Electro-acoustic modelling
14 Audio source priorities
15 Loudspeaker zones
16 Loudspeakers
17 Power amplifiers
18 Headroom
19 Sound pressure levels, frequency response and
   intelligibility
20 Networked systems
21 Electricity supplies
22 Cabling - Integrity of circuits
23 Structural integrity of mounting hardware
24 Integrity and fault monitoring
25 Maintainability
26 Engineering for a sustainable environment
Section 4: Commissioning and handover
27 Noise impact during alignment and testing
28 Test and alignment signals
29 Commissioning
30 Acceptance
31 Measurements for verification of compliance
32 Documentation
Section 5: User responsibilities
33 Restriction of access to system controls
34 Personnel
35 Pre-event checks
36 Announcements and announcer training
Annexes
Annex A (informative) - Design target matrices
Annex B (informative) - Testing and commissioning method
         statement
Annex C (informative) - Assessments for acceptability and
        verification
Annex D (informative) - Electro-acoustics - Concepts and
        clarification of scope
Annex E (informative) - Speech intelligibility
Annex F (informative) - Intelligibility - The integrity of
        the signal being measured
Annex G (normative) - Speech intelligibility objective
        measurement
Annex H (informative) - Listening tests
Annex I (informative) - Measurement definitions associated
        with sound
Annex J (informative) - Speech-spectrum shaped noise signal
Bibliography

Provides recommendations and guidance for the design, specification, maintenance and operation of permanently installed sound systems used for emergency purposes at sports venues.

This British Standard gives recommendations and guidance for the design, specification, maintenance and operation of permanently installed sound systems used for emergency purposes at sports venues.

It aims to ensure that, in an emergency, voiced messages are intelligible in all parts of the sports venue to which the public have access, no matter what type of event is taking place, as well as those areas outside the sports venue that the system is intended to serve.

This standard applies irrespective of whether or not a special sound system is installed for an event.