| Publication CODE |
Title |
| HD 450.9 S1:1987 |
HEARING AIDS
PART 9: METHODS OF MEASUREMENT OF CHARACTERISTICS OF HEARING AIDS WITH BONE VIBRATOR OUTPUT |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
25.00 €
|
1 P. |
Description
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.
|
| Class |
C74
(EQUIPMENT USING ELECTRICAL POWER RADIOLOGY AND SIMILAR ELECTRICAL APPLIANCES AND THEIR ACCESSORIES)
|
Available files
|
EN version
|
FR version
|
DE version
|
|
| Status |
Harmonization Document |
| Situation |
Currently active
|
|
| Registration |
95495 |
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
1987-06-15 |
| Date of availability (d.a.v.) |
1987-10-16 |
| Date of announcement (d.o.a.) |
1987-12-31 |
| Date of publication (d.o.p.) |
1988-06-30 |
| Date of withdrawal former edition (d.o.w.) |
1988-06-30 |
|
