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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for normal equal-loudness level contours for pure tones under free-field listening conditions
Hardcopy , PDF
09-03-2003
English
02-29-1988
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
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