BS EN 61183:1995
Current
The latest, up-to-date edition.
Electroacoustics. Random-incidence and diffuse-field calibration of sound level meters
Hardcopy , PDF
English
15-11-1995
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 |
| EN 61183:1994 | Identical |
| UNE-EN 61183:1996 | 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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