BSI BS 2497-5:1988

Withdrawn Revision
Standard reference zero for the calibration of pure tone air conduction audiometers -- Specification for a standard reference zero using an acoustic coupler complying with BS 4668

Best Price Guarantee Feb 29, 1988 English 8 Pages

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A newer publication replaces it: BSI BS EN ISO 389


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BSI BS 2497-5:1988

Standard reference zero for the calibration of pure tone air conduction audiometers -- Specification for a standard reference zero using an acoustic coupler complying with BS 4668

PUBLISH DATE 1988
PAGES 8
BSI BS 2497-5:1988

Reference equivalent threshold sound pressure levels for two earphones:

  • Beyer DT 48 with flat cushion
  • Telephonics TDH 39 with MC 41/AR cushion

These levels are provided in a form suitable for calibration.

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