ANSI/ASA S3.21-2004 (R2009)

Methods for Manual Pure-Tone Threshold Audiometry American National Standards of the Acoustical Society of America / 16-Apr-2009 / 13 pages

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This Standard provides a procedure for pure-tone audiometry that will serve the needs of persons conducting threshold measurements in industry, schools, medical settings, and other areas where valid audiometry threshold measurements are needed.

This product replaces:ANSI/ASA S3.21-1978(R1997) - American National Standard Method for Manual Pure-Tone Threshold Audiometry
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ANSI/ASA S3.21-2004 (R2009)
ANSI/ASA S3.21-1978(R1997)
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