DE9012978U1 - - Google Patents

Info

Publication number
DE9012978U1
DE9012978U1 DE9012978U DE9012978U DE9012978U1 DE 9012978 U1 DE9012978 U1 DE 9012978U1 DE 9012978 U DE9012978 U DE 9012978U DE 9012978 U DE9012978 U DE 9012978U DE 9012978 U1 DE9012978 U1 DE 9012978U1
Authority
DE
Germany
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 - Lifetime
Application number
DE9012978U
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.)
Hagenuk 2300 Kiel De GmbH
Original Assignee
Hagenuk 2300 Kiel De 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 Hagenuk 2300 Kiel De GmbH filed Critical Hagenuk 2300 Kiel De GmbH
Priority to DE9012978U priority Critical patent/DE9012978U1/de
Priority to DE19914111820 priority patent/DE4111820A1/de
Publication of DE9012978U1 publication Critical patent/DE9012978U1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • 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
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
DE9012978U 1990-09-12 1990-09-12 Expired - Lifetime DE9012978U1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE9012978U DE9012978U1 (de) 1990-09-12 1990-09-12
DE19914111820 DE4111820A1 (de) 1990-09-12 1991-04-11 Schaltungsanordnung zur vermeidung von akustischen rueckkopplungen, insbesondere bei lauthoer-freisprech-telefonen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9012978U DE9012978U1 (de) 1990-09-12 1990-09-12

Publications (1)

Publication Number Publication Date
DE9012978U1 true DE9012978U1 (de) 1992-01-23

Family

ID=6857415

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9012978U Expired - Lifetime DE9012978U1 (de) 1990-09-12 1990-09-12

Country Status (1)

Country Link
DE (1) DE9012978U1 (de)

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