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>ISO 389-2:1994 - Acoustics — Reference zero for the calibration of audiometric equipment — Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones
sklademVydáno: 1994-07-07
ISO 389-2:1994 - Acoustics — Reference zero for the calibration of audiometric equipment — Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones

ISO 389-2:1994

ISO 389-2:1994 - Acoustics — Reference zero for the calibration of audiometric equipment — Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones

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78.97 €
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Označení normy:ISO 389-2:1994
Vydání:1
Vydáno:1994-07-07
Počet stran (Anglicky):7
Počet stran (Francouzsky):7
DESCRIPTION

ISO 389-2:1994

Specifies levels supplementary to those specified in ISO 389:1991 (to be re-issued as ISO 389-1). Values given are applicable to insert earphones of type Etymotic Research ER-3A, coupled to the human ear by ear inserts of type ER-3-14.

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