ISO 389-4:1994 ✓ Most Recent

37350

Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise

standard by International Organization for Standardization , 10/01/1994

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Full Description

Specifies reference levels for narrow-band masking noise presented by air conduction from an earphone in pure-tone audiometry. The data are given in terms of levels to be added to the reference equivalent threshold sound pressure levels for the corresponding pure-tone frequencies. Data are given for noise bandwidths of one-third and one-half octaves.

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Product Details

Published:

10/01/1994

Number of Pages:

4

File Size:

1 file

Same As:

BS EN ISO 389-4:1999

Note:

This product is restricted and cannot be purchased in the following countries Ukraine, Russia, Belarus