BS ISO 6926 : 99 AMD 13404

Superseded

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ACOUSTICS - REQUIREMENTS FOR THE PERFORMANCE AND CALIBRATION OF REFERENCE SOUND SOURCES FOR THE DETERMINATION OF SOUND POWER LEVELS

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Superseded date: 25-06-2002

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Published date: 23-11-2012

Publisher: British Standards Institution

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Table of Contents - (Show below) - (Hide below)

Foreword
      Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Measurement uncertainty
5 Performance requirements
      5.1 General
      5.2 Temporal steadiness and repeatability of sound
             power output
      5.3 Total broad-band sound power level
      5.4 Spectral characteristics
      5.5 Directivity index
      5.6 Recalibration
6 Installation and operation of the reference sound
      source during calibration
      6.1 General
      6.2 Position of the reference source
7 Calibration procedure in hemi-anechoic rooms
      7.1 Test environment
      7.2 Microphone
      7.3 Microphone positions
      7.4 Measurements
      7.5 Air absorption
      7.6 Calculations
8 Calibration procedure in reverberation rooms
      8.1 Test environment
      8.2 Microphone
      8.3 Microphone positions
      8.4 Measurements
      8.5 Calculations
9 Information to be recorded
10 Information to be reported
Bibliography

Abstract - (Show below) - (Hide below)

Defines the acoustical performance requirements for reference sound sources - temporal steadiness and repeatability of the sound power output, spectral characteristics and directivity index.

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Committee	EH/1
Development Note	Supersedes BS 4196-8(1991) (01/2000) Supersedes 95/521168 DC Renumbered and superseded by BS EN ISO 6926 (07/2002)
Document Type	Standard
ISBN
Pages
Published
Publisher	British Standards Institution
Status	Superseded
Superseded By	BS EN ISO 6926:2016
Supersedes	BS 4196-8:1991 95/521168 DC : DRAFT JUN 1995

International Equivalents – Equivalent Standard(s) & Relationship - (Show below) - (Hide below)

Equivalent Standard(s)	Relationship
ISO 6926:2016	Identical

Standards Referencing This Book - (Show below) - (Hide below)

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
IEC 61183:1994	Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters
ISO 3744:2010	Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
ISO 9613-1:1993	Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere
ISO 3741:2010	Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
ISO 3745:2012	Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms

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