ANSI/PIMA IT7.406:1997
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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
Hardcopy , PDF
07-23-2013
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
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