UNE-EN ISO 389-7:2021
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UNE-EN ISO 389-7:2021

Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019)
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Publisher Asociacion Espanola de Normalizacion y Certificacion (AENOR)
Publication Date 01/20/2021
Page Count 19
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Weight (in grams) ---

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