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ASA S3.22-2024

Specification of Hearing Aid Characteristics
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ASA S3.22-2024

Specification of Hearing Aid Characteristics

PUBLISH DATE 2024
ASA S3.22-2024
This standard describes measurement methods for air-conduction hearing aids suitable for specification and quality testing purposes. Test methods described include output sound pressure level with a 90 dB input level, full-on gain, frequency response, harmonic distortion, equivalent input noise, current drain, and induction-coil sensitivity. Tolerance limits in relation to values specified by the manufacturer are also provided for these parameters. A normative annex describes calibration of the sound source. Informative annexes provide information about magnetic field generation, characteristics of battery simulators, additional tests to evaluate the electroacoustic performance of hearing aids, and information about measurement uncertainty for quality assurance. 
SDO ASA: Acoustical Society of America
Document Number S3.22
Publication Date Oct. 1, 2024
Language en - English
Page Count 65
Revision Level
Supercedes
Committee
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