ISO 226:2003
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Acoustics — Normal equal-loudness-level contours
Hardcopy , PDF
English, French
21-08-2003
09-04-2025
This International Standard specifies combinations of sound pressure levels and frequencies of pure continuous tones which are perceived as equally loud by human listeners. The specifications are based on the following conditions: the sound field in the absence of the listener consists of a free progressive plane wave; the source of sound is directly in front of the listener; the sound signals are pure tones; the sound pressure level is measured at the position where the centre of the listener's head would be, but in the absence of the listener; listening is binaural; the listeners are otologically normal persons in the age range from 18 years to 25 years inclusive.
| Committee |
ISO/TC 43
|
| DevelopmentNote |
Supersedes ISO/DIS 226 (08/2003)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| NF ISO 226 : 2004 | Identical |
| GOST R ISO 226 : 2009 | Identical |
| NEN ISO 226 : 2003 | Identical |
| BS ISO 226:2003 | Identical |
| NS 4802 : 1973 | Similar to |
| NBN ISO 226 : 1992 | Identical |
| BS 3383:1988 | Identical |
| NFS 30 003 : 1965 | Identical |
| UNE-ISO 226:2013 | Identical |
| UNE 74003:1992 | Similar to |
| DIN ISO 226:2006-04 | Identical |
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