GB1541261A - Hearing aid with an audio frequency amplifier - Google Patents
Hearing aid with an audio frequency amplifierInfo
- Publication number
- GB1541261A GB1541261A GB2948276A GB2948276A GB1541261A GB 1541261 A GB1541261 A GB 1541261A GB 2948276 A GB2948276 A GB 2948276A GB 2948276 A GB2948276 A GB 2948276A GB 1541261 A GB1541261 A GB 1541261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- audio frequency
- hearing aid
- frequency amplifier
- amplifier
- hearing
- 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
- H03G5/12—Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752536078 DE2536078B2 (de) | 1975-08-13 | 1975-08-13 | Schwerhoerigengeraet mit einem tonfrequenzverstaerker |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1541261A true GB1541261A (en) | 1979-02-28 |
Family
ID=5953895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2948276A Expired GB1541261A (en) | 1975-08-13 | 1976-07-15 | Hearing aid with an audio frequency amplifier |
Country Status (6)
Country | Link |
---|---|
AT (1) | ATA454576A (pl) |
CH (1) | CH595035A5 (pl) |
DE (1) | DE2536078B2 (pl) |
DK (1) | DK144169C (pl) |
GB (1) | GB1541261A (pl) |
NL (1) | NL7608970A (pl) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2186195A (en) * | 1937-12-24 | 1940-01-09 | Radio Patents Corp | Inverse feedback circuits |
FR1225932A (fr) * | 1958-10-22 | 1960-07-06 | Procédé et appareillage pour examiner et pour compenser les déficiences auditiveset pour autres buts | |
NL261164A (nl) * | 1960-02-15 | 1964-05-11 | Etudes Et Brevets Mota | Toestel voor gehoor-stem-aanpassing |
FR1263511A (fr) * | 1960-07-04 | 1961-06-09 | Appareil de prothèse binauricualire pour déficients de l'ouïe, à ampli bi-canal | |
US3784750A (en) * | 1972-02-25 | 1974-01-08 | Shalako Resource Systems | Apparatus and prosthetic device for providing electronic correction of auditory deficiencies for aurally handicapped persons |
DE2231647C3 (de) * | 1972-06-23 | 1981-08-13 | Hans-Heinz Dipl.-Ing. 1000 Berlin Dorsch | Verstärkerschaltungsanordnung für Tonfrequenzen |
JPS5250646B2 (pl) * | 1972-10-16 | 1977-12-26 | ||
DE2316939B2 (de) * | 1973-04-04 | 1978-06-01 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Elektrische Hörhilfeschaltung |
US3894195A (en) * | 1974-06-12 | 1975-07-08 | Karl D Kryter | Method of and apparatus for aiding hearing and the like |
-
1975
- 1975-08-13 DE DE19752536078 patent/DE2536078B2/de not_active Withdrawn
-
1976
- 1976-06-22 AT AT454576A patent/ATA454576A/de not_active Application Discontinuation
- 1976-07-01 CH CH842776A patent/CH595035A5/xx not_active IP Right Cessation
- 1976-07-15 GB GB2948276A patent/GB1541261A/en not_active Expired
- 1976-08-10 DK DK360276A patent/DK144169C/da not_active IP Right Cessation
- 1976-08-12 NL NL7608970A patent/NL7608970A/xx not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE2536078A1 (de) | 1977-02-17 |
CH595035A5 (pl) | 1978-01-31 |
DK144169C (da) | 1982-06-07 |
DK144169B (da) | 1981-12-28 |
DE2536078B2 (de) | 1977-06-08 |
ATA454576A (de) | 1977-11-15 |
DK360276A (da) | 1977-02-14 |
NL7608970A (nl) | 1977-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |