DE518223C - Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone - Google Patents

Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone

Info

Publication number
DE518223C
DE518223C DET37363D DET0037363D DE518223C DE 518223 C DE518223 C DE 518223C DE T37363 D DET37363 D DE T37363D DE T0037363 D DET0037363 D DE T0037363D DE 518223 C DE518223 C DE 518223C
Authority
DE
Germany
Prior art keywords
opening
microphone
sound
container
wall
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
DET37363D
Other languages
German (de)
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DET37363D priority Critical patent/DE518223C/de
Application granted granted Critical
Publication of DE518223C publication Critical patent/DE518223C/de
Expired legal-status Critical Current

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
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
DET37363D 1929-07-20 1929-08-06 Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone Expired DE518223C (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET37363D DE518223C (de) 1929-07-20 1929-08-06 Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB22353/29A GB327926A (en) 1929-07-20 1929-07-20 Telephone mufflers
DET37363D DE518223C (de) 1929-07-20 1929-08-06 Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone

Publications (1)

Publication Number Publication Date
DE518223C true DE518223C (de) 1931-02-20

Family

ID=10178021

Family Applications (1)

Application Number Title Priority Date Filing Date
DET37363D Expired DE518223C (de) 1929-07-20 1929-08-06 Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone

Country Status (6)

Country Link
US (1) US1800234A (en(2012))
BE (1) BE362912A (en(2012))
DE (1) DE518223C (en(2012))
FR (1) FR679978A (en(2012))
GB (1) GB327926A (en(2012))
NL (1) NL26028C (en(2012))

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458199A (en) * 1947-04-15 1949-01-04 Albert C Reinhold Telephone transmitter support and silencer
NL287590A (en(2012)) * 1962-01-09
US3925616A (en) * 1974-04-30 1975-12-09 Bell Telephone Labor Inc Apparatus for determining the glottal waveform
US8948411B1 (en) * 2014-02-18 2015-02-03 Scott A. Moser Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9253299B2 (en) 2014-02-18 2016-02-02 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9576567B2 (en) 2014-02-18 2017-02-21 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9386135B2 (en) 2014-05-16 2016-07-05 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9525765B2 (en) 2014-02-18 2016-12-20 Quiet, Inc. Ergonomic anechoic anti-noise canceling chamber for use with a communication device and related methods
US9614945B1 (en) 2014-02-18 2017-04-04 Quiet, Inc. Anti-noise canceling headset and related methods

Also Published As

Publication number Publication date
US1800234A (en) 1931-04-14
FR679978A (fr) 1930-04-23
BE362912A (en(2012)) 1929-09-30
NL26028C (en(2012)) 1932-09-15
GB327926A (en) 1930-04-17

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