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ANSI/PIMA IT7.406:1997

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

AUDIOVISUAL SYSTEMS - SOUND SYSTEM EQUIPMENT - PART 7: HEADPHONES AND EARPHONES
Available format(s)

Hardcopy , PDF

Withdrawn date

23-07-2013

Language(s)

English

Foreword
1 GENERAL
1.1 Scope
1.2 Normative references
1.3 Definitions
1.4 Classification, designation and coding
1.5 Marking for terminals, controls and polarity
1.6 User instructions
2 CONDITIONS FOR SPECIFICATIONS AND MEASUREMENTS
2.1 Rated conditions
2.2 Standard conditions for measurement
2.3 Couplers and ear simulators
2.4 Loudness comparison conditions
2.5 Ear canal sound pressure level measurement conditions
3 CHARACTERISTICS TO BE SPECIFIED AND THEIR METHODS OF
  MEASUREMENT
3.1 Power supply
3.2 Electrical impedance
3.3 Input voltage
3.4 Input power
3.5 Sound pressure (level)
3.6 Frequency response
3.7 Amplitude non-linearity
3.8 Rated climatic conditions (these are rated conditions)
3.9 External magnetic field
3.10 Unwanted sound radiation
3.11 Sound attenuation
3.12 Crosstalk attenuation for multi-channel headphones
3.13 Application force (this is a rated condition)
3.14 Physical characteristics, cables and connectors
4 CLASSIFICATION OF CHARACTERISTICS
Annex A: Specification and conditions of use of a microphone
         for use inside the ear canal
Annex B: Practical details of free-field comparison
         conditions
Annex C: Practical details of diffuse-field comparison
         conditions
Annex D: Practical details of the subjective comparison and
         ear canal sound pressure level conditions
Annex E: Bibliography

Applying to headsets, headphones, earphones and earsets intended to be used on, or in, the human ear. Also applies to equipment such as passive networks, pre-amplifiers and power supplies which form an integral part of the headphone system. Specifies the characteristics which should be included by the manufacturer in specifications and relevant methods of measurement. Classification of different types of earphone. Does not deal with: Safety - see reference IEC65[1], characteristics of microphones of headsets - see reference IEC 268-4 [2], earphones and other devices for hearing aids - see reference IEC 118-0 [3], headphones for audiometry; headphones and other devices which form part of an active ear-defender system, although some of its provisions may be applicable.

DocumentType
Standard
Pages
38
PublisherName
American National Standards Institute
Status
Withdrawn

IEC 60038:2009 IEC standard voltages
IEC 60268-3:2013 Sound system equipment - Part 3: Amplifiers
IEC 60268-12:1987 Sound system equipment. Part 12: Application of connectors for broadcast and similar use
IEC 60914:1988 Conference systems - Electrical and audio requirements
IEC GUIDE 106:1996 Guide for specifying environmental conditions for equipmentperformance rating
ISO 4869-1:1990 Acoustics Hearing protectors Part 1: Subjective method for the measurement of sound attenuation
IEC 60711:1981 Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts
IEC 60050-801:1994 International Electrotechnical Vocabulary (IEV) - Part 801: Acoustics and electroacoustics
IEC 60263:1982 Scales and sizes for plotting frequency characteristics and polar diagrams
ISO/TR 4869-3:1989 Acoustics Hearing protectors Part 3: Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes
IEC 60268-15:1996 Sound system equipment - Part 15: Preferred matching values for the interconnection of sound system components.
IEC 60268-1:1985 Sound system equipment. Part 1: General
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
IEC TR 60959:1990 Provisional head and torso simulator for acoustic measurements on air conduction hearing aids
IEC 60268-11:1987 Sound system equipment. Part 11: Application of connectors for the interconnection of sound system components

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