FR1602820A - - Google Patents

Info

Publication number
FR1602820A
FR1602820A FR1602820DA FR1602820A FR 1602820 A FR1602820 A FR 1602820A FR 1602820D A FR1602820D A FR 1602820DA FR 1602820 A FR1602820 A FR 1602820A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1602820A publication Critical patent/FR1602820A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H04R27/02—Amplifying systems for the deaf

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Headphones And Earphones (AREA)
FR1602820D 1967-12-19 1968-12-19 Expired FR1602820A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5755467 1967-12-19
GB3690468 1968-08-02

Publications (1)

Publication Number Publication Date
FR1602820A true FR1602820A (fr) 1971-02-01

Family

ID=26263275

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1602820D Expired FR1602820A (fr) 1967-12-19 1968-12-19

Country Status (3)

Country Link
DE (1) DE1815836A1 (fr)
FR (1) FR1602820A (fr)
NL (1) NL6818329A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668334A (en) * 1970-05-07 1972-06-06 Radioear Corp Hearing aid with changeable battery cover containing rf pickup coil
DE2858302C2 (fr) * 1977-03-24 1991-01-31 Andreas Mailand/Milano It Pavel
DE3508830A1 (de) * 1985-03-13 1986-09-18 Robert Bosch Gmbh, 7000 Stuttgart Hoergeraet
DE9319128U1 (de) * 1993-12-13 1995-11-23 Lux-Wellenhof, Gabriele, 65830 Kriftel Hörgerät

Also Published As

Publication number Publication date
NL6818329A (fr) 1969-06-23
DE1815836A1 (de) 1969-08-28

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Legal Events

Date Code Title Description
ST Notification of lapse