GB1541261A - Hearing aid with an audio frequency amplifier - Google Patents

Hearing aid with an audio frequency amplifier

Info

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
Application number
GB2948276A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1541261A publication Critical patent/GB1541261A/en
Expired legal-status Critical Current

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)
GB2948276A 1975-08-13 1976-07-15 Hearing aid with an audio frequency amplifier Expired GB1541261A (en)

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 (it)
CH (1) CH595035A5 (it)
DE (1) DE2536078B2 (it)
DK (1) DK144169C (it)
GB (1) GB1541261A (it)
NL (1) NL7608970A (it)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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 (it) * 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

Also Published As

Publication number Publication date
DE2536078A1 (de) 1977-02-17
CH595035A5 (it) 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