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  • ISO 226:2003

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Acoustics — Normal equal-loudness-level contours

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  29-03-2023

    Language(s):  English, French

    Published date:  21-08-2003

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee ISO/TC 43
    Development Note Supersedes ISO/DIS 226 (08/2003)
    Document Type Standard
    Publisher International Organization for Standardization
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    MIL-STD-1908 Base Document:1992 DEFINITION OF HUMAN FACTOR TERMS (METRIC)
    MIL-HDBK-1908 Revision B:1999 Definitions of Human Factors Terms
    EEMUA 140 : 2014 NOISE PROCEDURE SPECIFICATION
    BS ISO 532-1:2017 Acoustics. Methods for calculating loudness Zwicker method
    ISO 532-2:2017 Acoustics — Methods for calculating loudness — Part 2: Moore-Glasberg method
    ANSI S3.4 : 2007 : R2012 PROCEDURE FOR THE COMPUTATION OF LOUDNESS OF STEADY SOUNDS
    EN ISO 389-7:2005/A1:2016 ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 7: REFERENCE THRESHOLD OF HEARING UNDER FREE-FIELD AND DIFFUSE-FIELD LISTENING CONDITIONS (ISO 389-7:2005)
    ANSI S12-2 : 2008 CRITERIA FOR EVALUATING ROOM NOISE
    03/108242 DC : DRAFT JUNE 2003 BS ISO 1996 - ACOUSTICS - DESCRIPTION, ASSESSMENT AND MEASUREMENT OF ENVIRONMENTAL NOISE - PART 2: DETERMINATION OF ENVIRONMENTAL NOISE LEVELS
    BS ISO 28961:2012 Acoustics. Statistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions
    04/30095174 DC : DRAFT JUN 2004 ISO 389-7 - ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 7: REFERENCE THRESHOLD OF HEARING UNDER FREE-FIELD AND DIFFUSE-FIELD LISTENING CONDITIONS
    DEFSTAN 08-006(PT2)/3(2017) : 2017 COUNTER-SURVEILLANCE REQUIREMENTS - PART 2: ACOUSTIC ASPECTS
    BS 4054-1:1980 Methods of measuring and expressing the performance of radio receivers for sound broadcasting General conditions
    ISO 28961:2012 Acoustics — Statistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions
    ISO 18405:2017 Underwater acoustics — Terminology
    DIN EN ISO 389-7 E : 1998 ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 7: REFERENCE THRESHOLD OF HEARING UNDER FREE-FIELD AND DIFFUSE-FIELD LISTENING CONDITIONS
    I.S. EN ISO 8253-2:2009 ACOUSTICS - AUDIOMETRIC TEST METHODS - PART 2: SOUND FILED AUDIOMETRY WITH PURE-TONE AND NARROW-BAND TEST SIGNALS
    CEN ISO/TR 22411:2011 Ergonomics data and guidelines for the application of ISO/IEC Guide 71 to products and services to address the needs of older persons and persons with disabilities (ISO/TR 22411:2008)
    VDI 2038 Blatt 3:2013-11 Serviceability of structures under dynamic loads - Methods of analysis and evaluation in structural dynamics - Secondary airborne sound - prognosis, measurement, evaluation and reduction measures
    UNI ISO 28961 : 2012 ACOUSTICS - STATISTICAL DISTRIBUTION OF HEARING THRESHOLDS OF OTOLOGICALLY NORMAL PERSONS IN THE AGE RANGE FROM 18 YEARS TO 25 YEARS UNDER FREE-FIELD LISTENING CONDITIONS
    10/30214511 DC : 0 BS ISO 28961 - ACOUSTICS - STATISTICAL DISTRIBUTION OF NORMAL HEARING THRESHOLDS UNDER FREE-FIELD LISTENING CONDITIONS
    BS PD ISO/TR 22411 : 2008
    16/30275393 DC : 0 BS ISO 532-2 - ACOUSTICS - METHODS FOR CALCULATING LOUDNESS - PART 2: MOORE-GLASBERG METHOD
    I.S. EN 62760:2016 AUDIO REPRODUCTION METHOD FOR NORMALIZED LOUDNESS LEVEL
    ISO 8253-2:2009 Acoustics Audiometric test methods Part 2: Sound field audiometry with pure-tone and narrow-band test signals
    UNE-EN ISO 8253-2:2010 Acoustics - Audiometric test methods - Part 2: Sound field audiometry with pure-tone and narrow-band test signals (ISO 8253-2:2009)
    BS EN ISO 8253-2:2009 Acoustics. Audiometric test methods Sound field audiometry with pure-tone and narrow-band test signals
    CSA ISO 1996-1 : 2005 ACOUSTICS - DESCRIPTION, MEASUREMENT AND ASSESSMENT OF ENVIRONMENTAL NOISE - PART 1: BASIC QUANTITIES AND ASSESSMENT PROCEDURES
    BS 3045:1981 Method of expression of physical and subjective magnitudes of sound or noise in air
    UNI EN ISO 8253-2 : 2010 ACOUSTICS - AUDIOMETRIC TEST METHODS - PART 2: SOUND FIELD AUDIOMETRY WITH PURE-TONE AND NARROW-BAND TEST SIGNALS
    11/30216799 DC : 0 BS ISO 532-1 - ACOUSTICS - METHOD FOR CALCULATING LOUDNESS - PART 1: STATIONARY SOUNDS
    BS ISO 532-2:2017 Acoustics. Methods for calculating loudness Moore-Glasberg method
    PD CEN ISO/TR 22411:2011 Ergonomics data and guidelines for the application of ISO/IEC Guide 71 to products and services to address the needs of older persons and persons with disabilities
    16/30275390 DC : 0 BS ISO 532-1 - ACOUSTICS - METHODS FOR CALCULATING LOUDNESS - PART 1: ZWICKER METHOD
    ANSI/ASA S3.4 : 2007 PROCEDURE FOR THE COMPUTATION OF LOUDNESS OF STEADY SOUNDS
    BS EN 62760:2016 Audio reproduction method for normalized loudness level
    BS EN ISO 389-7 : 2005 ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 7: REFERENCE THRESHOLD OF HEARING UNDER FREE-FIELD AND DIFFUSE-FIELD LISTENING CONDITIONS (ISO 389-7:2005)
    ISO 1996-1:2016 Acoustics Description, measurement and assessment of environmental noise Part 1: Basic quantities and assessment procedures
    ISO/TR 22411:2008 Ergonomics data and guidelines for the application of ISO/IEC Guide 71 to products and services to address the needs of older persons and persons with disabilities
    EN ISO 8253-2:2009 Acoustics - Audiometric test methods - Part 2: Sound field audiometry with pure-tone and narrow-band test signals (ISO 8253-2:2009)
    CEA TR 11 : 2015 STUDY OF AUDIO LOUDNESS RANGE FOR CONSUMERS IN VARIOUS LISTENING MODES AND AMBIENT NOISE LEVELS
    ISO 532-1:2017 Acoustics — Methods for calculating loudness — Part 1: Zwicker method
    BS ISO 18405:2017 Underwater acoustics. Terminology
    13/30275203 DC : 0 BS ISO 1996-1 - ACOUSTICS - DESCRIPTION, MEASUREMENT AND ASSESSMENT OF ENVIRONMENTAL NOISE - PART 1: BASIC QUANTITIES AND ASSESSMENT PROCEDURES
    S.R. CEN ISO/TR 22411:2011 ERGONOMICS DATA AND GUIDELINES FOR THE APPLICATION OF ISO/IEC GUIDE 71 TO PRODUCTS AND SERVICES TO ADDRESS THE NEEDS OF OLDER PERSONS AND PERSONS WITH DISABILITIES
    ANSI/ASA S3.4 : 2007(R2017) PROCEDURE FOR THE COMPUTATION OF LOUDNESS OF STEADY SOUNDS
    I.S. EN ISO 389-7:2005 ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 7: REFERENCE THRESHOLD OF HEARING UNDER FREE-FIELD AND DIFFUSE-FIELD LISTENING CONDITIONS
    IEC 62760:2016 Audio reproduction method for normalized loudness level
    ISO 389-7:2005 Acoustics Reference zero for the calibration of audiometric equipment Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
    EN 62760:2016 Audio reproduction method for normalized loudness level
    DIN EN ISO 2342:2004-05 Slotted headless screws with shank (ISO 2342:2003)
    DIN EN ISO 389-7:1998-12 ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 7: REFERENCE THRESHOLD OF HEARING UNDER FREE-FIELD AND DIFFUSE-FIELD LISTENING CONDITIONS

    Standards Referencing This Book - (Show below) - (Hide below)

    AS/NZS ISO 8253.2:2019 Acoustics - Audiometric test methods Sound field audiometry with pure-tone and narrow-band test signals
    ISO 266:1997 Acoustics — Preferred frequencies
    AS ISO 532.2:2019 Acoustics - Methods for calculating loudness Moore-Glasberg method
    AS ISO 532.1:2019 Acoustics - Methods for calculating loudness Zwicker Method
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