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Database: 189759 (26 Oct 2025)
GB/T 11454-1989 English PDF
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GB/T 11454-1989
: Magnetic field strength in audio-frequency induction loops for hearing aid purposes
Status: Obsolete
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Standard Title (Description)
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GB/T 11454-1989
English
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Magnetic field strength in audio-frequency induction loops for hearing aid purposes
Obsolete
GB/T 11454-1989
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Basic data
Standard ID
GB/T 11454-1989 (GB/T11454-1989)
Description (Translated English)
Magnetic field strength in audio-frequency induction loops for hearing aid purposes
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
L31
Classification of International Standard
17.140
Word Count Estimation
4,422
Date of Issue
6/29/1989
Date of Implementation
4/1/1990
Regulation (derived from)
Announcement of Newly Approved National Standards 2010 No. 4 (No. 159 overall)
Issuing agency(ies)
State Bureau of Technical Supervision
Summary
This Standard specifies a hearing aid with audio induction loop system the magnetic field strength requirements, the purpose is to ensure the provision of appropriate signal to noise ratio in the case of a hearing aid, but contained. The standard also specifies the minimum acceptable frequency range required for clarity.
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