BS 6259:1997
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Code of practice for the design, planning, installation, testing and maintenance of sound systems
Hardcopy , PDF
31-03-2015
English
15-04-1997
Committees responsible
Foreword
Code of practice
1 General
2 Application
3 Guidance for prospective purchasers
4 Planning and contract management of the system
5 Recommended design principles and procedures
6 Installing the system
7 Commissioning the system
8 Operation and maintenance of the system
9 Equipment
10 Special considerations for sound systems for
emergency purposes
Annexes
A (informative) Example of a plan of work for Project
Team operation suitable for large projects
B (informative) Project checklist
C (informative) Design checklist
D (informative) Basic concepts for electronics and
acoustics
E (informative) Consultants for sound systems
F (informative) Example of sound system operating
instructions for a Scottish court
G (informative) Basic list of characteristics which
should be included in loudspeaker specifications,
and references to the relevant methods of measure-
ment
H (informative) List of characteristics recommended
to be specified in contracts for headphones and
headsets, and the relevant methods of measurement
J (informative) Basic list of characteristics
recommended to be specified for amplifiers, and the
relevant methods of measurement
K (informative) Attenuators for microphones
L (informative) Bibliography
Tables
1 Basic recommendations for sound system applications
2 Expected sound levels
3 Maximum sound pressure levels for Dolby formats
A.1 Plan of work
A.2 Stage A: Inception
A.3 Stage B: Feasibility
A.4 Stage C: Outline proposals
A.5 Stage D: Scheme design
A.6 Stage E: Detail design
A.7 Stage F: Bills of quantity
A.8 Stage G; Project plan
A.9 Stage H: Operation on site
A.10 Stage I: Completion
B.1 Project checklist for sound system installation
Figures
1 Block diagram of an extensive sound system for a
large store
2 Block diagram of a sound system for a large church
3 Examples of sound system output levels
4 Empirical rule for estimating pairs of audio band
limit frequencies which give subjectively balanced
reproduction of programme signals
5 Sound from film maximum sound pressure levels,
types A, SR and SR.D
6 Diagram showing the floating-return technique for
disabling local loudspeaker attenuators in an
emergency
7 Horizontal directional response of an omnidirectional
microphone with its axis vertical: decibel scale
8 Directional response of a cardioid microphone:
decibel scale
9 Directional response of a hypercardioid microphone:
decibel scale
10 Directional response of a supercardioid microphone
decibel scale
11 Directional response of a highly directional shotgun
(rifle) microphone where f = 2.5 Hz and barrel
length is 275 mm
12 Directional response of a highly directional
shotgun (rifle) microphone where f = 10 kHz and
barrel length is 275 mm
13 Directional response of a highly directional shot-
gun (rifle) microphone where f = 10 kHz and barrel
length is 275 mm
14 Relative operating distances of microphones for equal
direct-reverberent signal ratios
15 Two methods for positioning microphones on a
conference table. The top view observes the 3 to 1
rule using cardioid microphones. The bottom view
shows alternative placement using two omni-
directional microphones
16 The 3-to-1 ratio for microphone positioning
17 A reduced distance ratio using angled microphones
18 Illustrations of 'good' and 'bad' microphone
placement
19 Optimization of the height of the microphone above
the table
D.1 Distortion characteristics of a typical amplifier
D.2 Reflection diagram for certain positions of sound
source and receiver in a rectangular room of 40m x
25m x 8m
D.3 Level recorder trace of sound decay in a room
D.4 Reverberation time measurement
K.1 Basic-L-type microphone attenuator
K.2 Attenuator configuration
Index
List of references
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