FR766258A - Discreet audiphone powered by mains electricity - Google Patents

Discreet audiphone powered by mains electricity

Info

Publication number
FR766258A
FR766258A FR766258DA FR766258A FR 766258 A FR766258 A FR 766258A FR 766258D A FR766258D A FR 766258DA FR 766258 A FR766258 A FR 766258A
Authority
FR
France
Prior art keywords
audiphone
discreet
powered
mains electricity
mains
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
Other languages
French (fr)
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.)
FABRICATIONS IND SOC D
Original Assignee
FABRICATIONS IND SOC D
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 FABRICATIONS IND SOC D filed Critical FABRICATIONS IND SOC D
Application granted granted Critical
Publication of FR766258A publication Critical patent/FR766258A/en
Expired 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
    • 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
    • H04R25/43—Electronic input selection or mixing based on input signal analysis, e.g. mixing or selection between microphone and telecoil or between microphones with different directivity characteristics

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)
FR766258D 1933-12-29 1933-12-29 Discreet audiphone powered by mains electricity Expired FR766258A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR766258T 1933-12-29

Publications (1)

Publication Number Publication Date
FR766258A true FR766258A (en) 1934-06-25

Family

ID=9183204

Family Applications (1)

Application Number Title Priority Date Filing Date
FR766258D Expired FR766258A (en) 1933-12-29 1933-12-29 Discreet audiphone powered by mains electricity

Country Status (1)

Country Link
FR (1) FR766258A (en)

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