DE3608964C2 - - Google Patents

Info

Publication number
DE3608964C2
DE3608964C2 DE19863608964 DE3608964A DE3608964C2 DE 3608964 C2 DE3608964 C2 DE 3608964C2 DE 19863608964 DE19863608964 DE 19863608964 DE 3608964 A DE3608964 A DE 3608964A DE 3608964 C2 DE3608964 C2 DE 3608964C2
Authority
DE
Germany
Prior art keywords
amplifier
hearing aid
input
preamplifier
transistor
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
DE19863608964
Other languages
German (de)
English (en)
Other versions
DE3608964A1 (de
Inventor
Albert Ing.(Grad.) Eggert
Juergen Dipl.-Ing. Grahn
Dieter 1000 Berlin De Rust
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 DE19863608964 priority Critical patent/DE3608964A1/de
Publication of DE3608964A1 publication Critical patent/DE3608964A1/de
Application granted granted Critical
Publication of DE3608964C2 publication Critical patent/DE3608964C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/12—Combinations of two or more types of control, e.g. gain control and tone 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
    • H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • 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

  • 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)
DE19863608964 1986-03-18 1986-03-18 Hoergeraeteverstaerker Granted DE3608964A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863608964 DE3608964A1 (de) 1986-03-18 1986-03-18 Hoergeraeteverstaerker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863608964 DE3608964A1 (de) 1986-03-18 1986-03-18 Hoergeraeteverstaerker

Publications (2)

Publication Number Publication Date
DE3608964A1 DE3608964A1 (de) 1987-09-24
DE3608964C2 true DE3608964C2 (enrdf_load_stackoverflow) 1988-12-22

Family

ID=6296624

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863608964 Granted DE3608964A1 (de) 1986-03-18 1986-03-18 Hoergeraeteverstaerker

Country Status (1)

Country Link
DE (1) DE3608964A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125378C1 (en) * 1991-07-31 1992-10-08 Siemens Ag, 8000 Muenchen, De Hearing aid device with improved speech discrimination characteristics - has amplification setting control fitted between preamplifier and amplifier
DE4125377C1 (en) * 1991-07-31 1993-04-29 Siemens Audiologische Technik Gmbh, 8520 Erlangen, De Hearing aid with preamplifier and post amplifier - has signal path for upper frequency range with limiter circuit and signal path for lower frequency range with circuit for automatic amplification regulation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2641675A1 (de) * 1976-09-16 1978-03-23 Bosch Gmbh Robert Schwerhoerigengeraet mit einem tonfrequenzverstaerker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125378C1 (en) * 1991-07-31 1992-10-08 Siemens Ag, 8000 Muenchen, De Hearing aid device with improved speech discrimination characteristics - has amplification setting control fitted between preamplifier and amplifier
DE4125377C1 (en) * 1991-07-31 1993-04-29 Siemens Audiologische Technik Gmbh, 8520 Erlangen, De Hearing aid with preamplifier and post amplifier - has signal path for upper frequency range with limiter circuit and signal path for lower frequency range with circuit for automatic amplification regulation

Also Published As

Publication number Publication date
DE3608964A1 (de) 1987-09-24

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation