GB2157917B - Active tone controls for hearing aids - Google Patents
Active tone controls for hearing aidsInfo
- Publication number
- GB2157917B GB2157917B GB08509750A GB8509750A GB2157917B GB 2157917 B GB2157917 B GB 2157917B GB 08509750 A GB08509750 A GB 08509750A GB 8509750 A GB8509750 A GB 8509750A GB 2157917 B GB2157917 B GB 2157917B
- Authority
- GB
- United Kingdom
- Prior art keywords
- hearing aids
- tone controls
- active tone
- active
- controls
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/04—Manually-operated control in untuned amplifiers
- H03G5/10—Manually-operated control in untuned amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
- H04R25/502—Customised settings for obtaining desired overall acoustical characteristics using analog signal processing
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT127084A AT379724B (en) | 1984-04-16 | 1984-04-16 | ACTIVE SOUND PANEL FOR HOERAGE DEVICES |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8509750D0 GB8509750D0 (en) | 1985-05-22 |
GB2157917A GB2157917A (en) | 1985-10-30 |
GB2157917B true GB2157917B (en) | 1987-05-07 |
Family
ID=3510245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08509750A Expired GB2157917B (en) | 1984-04-16 | 1985-04-16 | Active tone controls for hearing aids |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS60233917A (en) |
AT (1) | AT379724B (en) |
CH (1) | CH668153A5 (en) |
DE (1) | DE3513197A1 (en) |
DK (1) | DK164345C (en) |
GB (1) | GB2157917B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4689819B1 (en) * | 1983-12-08 | 1996-08-13 | Knowles Electronics Inc | Class D hearing aid amplifier |
EP0349835B1 (en) * | 1988-07-04 | 1993-11-10 | Siemens Audiologische Technik GmbH | Hearing aid |
EP1016318A1 (en) * | 1998-07-02 | 2000-07-05 | Beltone Netherlands B.V. | Hearing instrument |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5344908Y2 (en) * | 1973-10-26 | 1978-10-27 | ||
DE2360779C3 (en) * | 1973-12-06 | 1979-12-13 | Braun Ag, 6000 Frankfurt | Active tone control |
DE2931482A1 (en) * | 1979-08-03 | 1981-02-19 | Bosch Gmbh Robert | TUNABLE ACTIVE HIGH-PASS FILTER FOR HOUR DEVICES |
DE3113666A1 (en) * | 1981-04-04 | 1982-10-21 | Robert Bosch Gmbh, 7000 Stuttgart | Hearing aid with a high-gain, multistage transistor amplifier |
-
1984
- 1984-04-16 AT AT127084A patent/AT379724B/en not_active IP Right Cessation
-
1985
- 1985-03-14 CH CH115585A patent/CH668153A5/en not_active IP Right Cessation
- 1985-04-12 DE DE19853513197 patent/DE3513197A1/en active Granted
- 1985-04-16 GB GB08509750A patent/GB2157917B/en not_active Expired
- 1985-04-16 DK DK171785A patent/DK164345C/en not_active IP Right Cessation
- 1985-04-16 JP JP60081209A patent/JPS60233917A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE3513197C2 (en) | 1992-05-14 |
JPS60233917A (en) | 1985-11-20 |
DK171785A (en) | 1985-10-17 |
ATA127084A (en) | 1985-06-15 |
DE3513197A1 (en) | 1985-11-07 |
DK164345B (en) | 1992-06-09 |
DK171785D0 (en) | 1985-04-16 |
DK164345C (en) | 1992-11-02 |
AT379724B (en) | 1986-02-25 |
GB2157917A (en) | 1985-10-30 |
GB8509750D0 (en) | 1985-05-22 |
CH668153A5 (en) | 1988-11-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980416 |