• There are no items in your cart

HD 450.9 S1:1987

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Hearing aids - Part 9: Methods of measurement of characteristics of hearing aids with bone vibrator output

Withdrawn date

30-06-1988

Published date

16-10-1987

Sorry this product is not available in your region.

Defines a method of expressing the input/output ratio as an acousto-mechanical sensitivity level measured on a mechanical coupler according to the second edition of HD 590. Provides a suitable basis for the exchange of information or for direct comparison of the electroacoustic characteristics of hearing aids using bone vibrator outputs. The methods chosen are practical and reproducible and are based on selected fixed parameters.

Committee
CLC/SR 29
DocumentType
Standard
PublisherName
European Committee for Standards - Electrical
Status
Withdrawn

Standards Relationship
UNE 20603-9:1995 Identical

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.