CENELEC
Project
| Reference | HD 450.9 S1:1987 |
|---|---|
| Title | Hearing aids - Part 9: Methods of measurement of characteristics of hearing aids with bone vibrator output |
| Project Number | 418 |
| Abstract/Scope | 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. |
| Status |
Published
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Status
| Current Stage code | 6060 |
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| Current Stage code date | 1987-10-16 |
| Current Stage code deadline | 1988-06-30 |
| Deadline date for vote |
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Details
| IEC Technical Body | IEC/TC 29 |
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| Reference Document | IEC 60118-9:1985 (EQV) |
| ICS | |
| Keywords | Hearing aid; Bone vibrator output; Measurement |
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Environment
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Information
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History
Implementation Dates
| date of Ratification (DOR) (1) | 1987-06-15 |
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| date of Availability (DAV) (2) | 1987-10-16 |
| date of Announcement (DOA) (3) | 1987-12-31 |
| date of Publication (DOP) (4) | 1988-06-30 |
| date of Withdrawal (DOW) (5) | 1988-06-30 |
Relations
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| Normative reference (6) |
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
