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BS EN 61183:1995

Current
Current

The latest, up-to-date edition.

Electroacoustics. Random-incidence and diffuse-field calibration of sound level meters
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

11-15-1995

1 Scope
2 Normative references
3 Definitions
4 Calibration method based on free-field measurements
5 Calibration method based on diffuse-field
    measurements
Annexes
A (Informative) Practical calibration method based on
    free-field measurements
B (Informative) Pra?ctical calibration method based on
    diffuse-field measurements
ZA (Normative) Other international publications quoted
    in this standard with the references of the relevant
    European publications
Tables
A.1 Adjustment factors K(0) for calculation of random-
    incidence sensitivity level
B.1 Characteristics of a type LS2aP/LS2F microphone
Figures
1 Reference coordinate system for random-incidence
    sensitivity level calibration based on free-field
    measurements
2 Reference coordinate system for the purpose of
    practical measurement of random-incidence sensitivity
    level based on free-field measurements
A.1 A sound level meter located with its microphone at
    the centre of a sphere and a reference direction for
    sound incidence aligned with the X-axis
A.2 A sound level meter under test mounted on a turntable
    to obtain incidence of sound from different directions
    in the X-y plane
A.3 Method of simulating rotation in the X-Z plane by 90
    degrees rotation of the sound level meter under test
    around an axis coincident with the reference
    direction, and then rotation around a circle in the
    X-Y plane as in figure A.2

Describes a free-field calibration method for determining random-incidence sensitivity and a diffuse-field method for diffuse-field sensitivity.

Committee
EPL/29
DevelopmentNote
Also numbered as IEC 61183 Supersedes 90/22425 DC (11/2005)
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Current

Standards Relationship
NF EN 61183 : 1994 Identical
I.S. EN 61183:1995 Identical
NBN EN 61183 : 1996 Identical
DIN EN 61183:1994-12 Identical
SN EN 61183 : 1994 Identical
UNE-EN 61183:1996 Identical
EN 61183 : 1994 Identical

95/213406 DC : DRAFT OCT 1995
14/30268407 DC : 0 BS 4142 - METHODS FOR RATING AND ASSESSING INDUSTRIAL AND COMMERCIAL SOUND

BS EN 60651:1994 Specification for sound level meters
ISO 266:1997 Acoustics — Preferred frequencies
BS EN 60804:2001 Integrating-averaging sound level meters
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
IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
BS EN 61094-1:2001 Specification for measurement microphones Specifications for laboratory standard microphones

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