BS 3383:1988
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for normal equal-loudness level contours for pure tones under free-field listening conditions
Hardcopy , PDF
03-09-2003
English
29-02-1988
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National foreword
Committees responsible
Specification
0 Introduction
1 Scope and field of application
2 References
3 Definitions
4 Specification
Annexes
A Graphical illustration of equal-loudness level
contours and minimum audible field (MAF) for pure
tones under free-field listening conditions
B Tables of the equal-loudness level functions for
pure tones under free-field listening conditions
C Equal-loudness level functions for narrow bands of
random noise in a diffuse field
Tables
1 Parameters of the equal-loudness level functions
2 Loudness level, in phons, against free-field sound
pressure level, in decibels, for pure tones of
frequencies ranging from 20 to 12 500 Hz
3 Sound pressure level, in decibels, against loudness
level, in phons, for frequencies ranging from 20 to
12 500 Hz
4 Parameters of the loudness level functions for
diffuse field
Figure
1 Normal equal-loudness level contours for pure tones
(binaural free-field listening, frontal incidence)
Bibliography
Specifies, for the condition of equal loudness and certain other stated conditions, relationships between sound pressure levels and frequencies of pure continuous tones. These are expressed by means of a bilinear equation for the preferred frequencies in the one-third octave series from 20 to 12500 Hz. A graphical illustration is included.
| Committee |
EH/1
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 226:2003 | Identical |
| ISO 266:1997 | Acoustics — Preferred frequencies |
| ISO 389:1991 | Acoustics Standard reference zero for the calibration of pure-tone air conduction audiometers |
| ISO 131:1979 | Acoustics — Expression of physical and subjective magnitudes of sound or noise in air |
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