DK0499674T3 - - Google Patents

Info

Publication number
DK0499674T3
DK0499674T3 DK91102556.7T DK91102556T DK0499674T3 DK 0499674 T3 DK0499674 T3 DK 0499674T3 DK 91102556 T DK91102556 T DK 91102556T DK 0499674 T3 DK0499674 T3 DK 0499674T3
Authority
DK
Denmark
Prior art keywords
lambda
reflections
resonators
interfering
telephone
Prior art date
Application number
DK91102556.7T
Other languages
Danish (da)
English (en)
Inventor
Tomas Jan Dr-Ing Andert
Stefan Dipl-Ing Pieper
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of DK0499674T3 publication Critical patent/DK0499674T3/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/20—Arrangements for preventing acoustic feed-back

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Headphones And Earphones (AREA)
DK91102556.7T 1991-02-21 1991-02-21 DK0499674T3 (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91102556A EP0499674B1 (de) 1991-02-21 1991-02-21 Anordnung zur Unterdrückung von akustischen Reflexionen bei Handapparaten der Fernsprechtechnik

Publications (1)

Publication Number Publication Date
DK0499674T3 true DK0499674T3 (fi) 1997-02-17

Family

ID=8206436

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91102556.7T DK0499674T3 (fi) 1991-02-21 1991-02-21

Country Status (5)

Country Link
EP (1) EP0499674B1 (fi)
AT (1) ATE146320T1 (fi)
DE (1) DE59108408D1 (fi)
DK (1) DK0499674T3 (fi)
ES (1) ES2095262T3 (fi)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049788A1 (de) * 1999-02-18 2000-08-24 Siemens Aktiengesellschaft Handapparat der fernsprechtechnik
EP1151593A1 (de) * 1999-02-18 2001-11-07 Siemens Aktiengesellschaft Handapparat für die fernsprechtechnik
NL1028909C2 (nl) * 2005-04-29 2006-10-31 Univ Twente Breedbandige geluidreductie met akoestische resonatoren.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190466A (en) * 1937-10-08 1940-02-13 Bell Telephone Labor Inc Telephone substation apparatus
US2190467A (en) * 1937-10-08 1940-02-13 Bell Telephone Labor Inc Telephone substation apparatus
DE3013696C2 (de) * 1980-04-03 1982-08-12 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Fernsprechhandapparat
DE3542490A1 (de) * 1985-11-30 1987-06-04 Hagenuk Telecom Gmbh Fernsprechhandapparat
JPH0625085Y2 (ja) * 1986-01-30 1994-06-29 三菱電機株式会社 電話機
DE3721230A1 (de) * 1987-06-24 1989-01-12 Krone Ag Handapparat fuer einen fernsprechapparat
DE8816291U1 (de) * 1988-03-16 1989-05-24 Krone AG, 1000 Berlin Fernsprechapparat mit einer Mute-Taste

Also Published As

Publication number Publication date
EP0499674A1 (de) 1992-08-26
ES2095262T3 (es) 1997-02-16
EP0499674B1 (de) 1996-12-11
ATE146320T1 (de) 1996-12-15
DE59108408D1 (de) 1997-01-23

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