DE3139088A1 - "hoergeraet" - Google Patents

"hoergeraet"

Info

Publication number
DE3139088A1
DE3139088A1 DE19813139088 DE3139088A DE3139088A1 DE 3139088 A1 DE3139088 A1 DE 3139088A1 DE 19813139088 DE19813139088 DE 19813139088 DE 3139088 A DE3139088 A DE 3139088A DE 3139088 A1 DE3139088 A1 DE 3139088A1
Authority
DE
Germany
Prior art keywords
hearing aid
transistor
astable multivibrator
capacitor
amplifier
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.)
Granted
Application number
DE19813139088
Other languages
German (de)
English (en)
Other versions
DE3139088C2 (cs
Inventor
Wolfgang 1000 Berlin Schmidt
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
Priority to DE19813139088 priority Critical patent/DE3139088A1/de
Publication of DE3139088A1 publication Critical patent/DE3139088A1/de
Application granted granted Critical
Publication of DE3139088C2 publication Critical patent/DE3139088C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
DE19813139088 1981-10-01 1981-10-01 "hoergeraet" Granted DE3139088A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813139088 DE3139088A1 (de) 1981-10-01 1981-10-01 "hoergeraet"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813139088 DE3139088A1 (de) 1981-10-01 1981-10-01 "hoergeraet"

Publications (2)

Publication Number Publication Date
DE3139088A1 true DE3139088A1 (de) 1983-04-14
DE3139088C2 DE3139088C2 (cs) 1989-04-27

Family

ID=6143173

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813139088 Granted DE3139088A1 (de) 1981-10-01 1981-10-01 "hoergeraet"

Country Status (1)

Country Link
DE (1) DE3139088A1 (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240798A1 (en) * 1986-03-31 1987-10-14 Siemens Aktiengesellschaft Hearing aid noise suppression system
EP0349835A1 (de) * 1988-07-04 1990-01-10 Siemens Audiologische Technik GmbH Hörgerät
US4918736A (en) * 1984-09-27 1990-04-17 U.S. Philips Corporation Remote control system for hearing aids

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LIMANN,Otto: Bedeutung, Schaltungstechnik und Auf-bau von Hörgeräten, In: Funkschau 1969, H.19, S.687-690 *
VÖLZ,Horst: Elektronik,2.Auflage,Berlin,Akademie- Verlag, 1979, S.514-516 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4918736A (en) * 1984-09-27 1990-04-17 U.S. Philips Corporation Remote control system for hearing aids
EP0240798A1 (en) * 1986-03-31 1987-10-14 Siemens Aktiengesellschaft Hearing aid noise suppression system
US4750207A (en) * 1986-03-31 1988-06-07 Siemens Hearing Instruments, Inc. Hearing aid noise suppression system
EP0349835A1 (de) * 1988-07-04 1990-01-10 Siemens Audiologische Technik GmbH Hörgerät

Also Published As

Publication number Publication date
DE3139088C2 (cs) 1989-04-27

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee