GB/T 6657-1986 English PDF

US$719.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 6657-1986: Measurement of electroacoustical characteristics of hearing aids
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6657-1986	719	Add to Cart	5 days	Measurement of electroacoustical characteristics of hearing aids	Obsolete

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Basic data

Standard ID: GB/T 6657-1986 (GB/T6657-1986)
Description (Translated English): Measurement of electroacoustical characteristics of hearing aids
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M72
Classification of International Standard: 33.160.10
Word Count Estimation: 18,150
Date of Issue: 7/31/1986
Date of Implementation: 8/1/1987
Adopted Standard: IEC 60118-0, NEQ
Regulation (derived from): Announcement of Newly Approved National Standards 2010 No. 4 (No. 159 overall)
Issuing agency(ies): National Bureau of Standards
Summary: This Standard specifies the use of free-field technology and air conduction hearing aids physical performance characteristics of the method for measuring the ear simulator for measuring air conduction hearing aids electro-acoustic characteristics;

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