FR856727A - System to avoid acoustic reactions in speech broadcasting installations - Google Patents

System to avoid acoustic reactions in speech broadcasting installations

Info

Publication number
FR856727A
FR856727A FR856727DA FR856727A FR 856727 A FR856727 A FR 856727A FR 856727D A FR856727D A FR 856727DA FR 856727 A FR856727 A FR 856727A
Authority
FR
France
Prior art keywords
avoid acoustic
speech broadcasting
installations
reactions
acoustic reactions
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR856727A publication Critical patent/FR856727A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2410/00—Microphones
    • H04R2410/01—Noise reduction using microphones having different directional characteristics

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
FR856727D 1938-06-24 1939-06-22 System to avoid acoustic reactions in speech broadcasting installations Expired FR856727A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2263233X 1938-06-24

Publications (1)

Publication Number Publication Date
FR856727A true FR856727A (en) 1940-08-03

Family

ID=7992881

Family Applications (1)

Application Number Title Priority Date Filing Date
FR856727D Expired FR856727A (en) 1938-06-24 1939-06-22 System to avoid acoustic reactions in speech broadcasting installations

Country Status (2)

Country Link
US (1) US2263233A (en)
FR (1) FR856727A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE474660A (en) * 1946-08-17
US3301956A (en) * 1963-06-11 1967-01-31 Diebold Inc Sound system for banking service equipment
GB1458663A (en) * 1972-12-15 1976-12-15 Ard Anstalt Microphone circuits
IE47296B1 (en) * 1977-11-03 1984-02-08 Post Office Improvements in or relating to audio teleconferencing
US4879749A (en) * 1986-06-26 1989-11-07 Audimax, Inc. Host controller for programmable digital hearing aid system
DE10110258C1 (en) * 2001-03-02 2002-08-29 Siemens Audiologische Technik Method for operating a hearing aid or hearing aid system and hearing aid or hearing aid system

Also Published As

Publication number Publication date
US2263233A (en) 1941-11-18

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