FR679978A - Improvements to voice suppressors for phones - Google Patents

Improvements to voice suppressors for phones

Info

Publication number
FR679978A
FR679978A FR679978DA FR679978A FR 679978 A FR679978 A FR 679978A FR 679978D A FR679978D A FR 679978DA FR 679978 A FR679978 A FR 679978A
Authority
FR
France
Prior art keywords
suppressors
phones
voice
voice suppressors
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)
Inventor
Harry Clarence Tuttle
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 filed Critical
Application granted granted Critical
Publication of FR679978A publication Critical patent/FR679978A/en
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)
FR679978D 1929-07-20 1929-08-07 Improvements to voice suppressors for phones Expired FR679978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22353/29A GB327926A (en) 1929-07-20 1929-07-20 Telephone mufflers

Publications (1)

Publication Number Publication Date
FR679978A true FR679978A (en) 1930-04-23

Family

ID=10178021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR679978D Expired FR679978A (en) 1929-07-20 1929-08-07 Improvements to voice suppressors for phones

Country Status (6)

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

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) * 1962-01-09
US3925616A (en) * 1974-04-30 1975-12-09 Bell Telephone Labor Inc Apparatus for determining the glottal waveform
US9386135B2 (en) 2014-05-16 2016-07-05 Quiet, Inc. 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
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
US8948411B1 (en) * 2014-02-18 2015-02-03 Scott A. Moser Ergonomic tubular anechoic chambers for use with a communication device and related methods

Also Published As

Publication number Publication date
GB327926A (en) 1930-04-17
DE518223C (en) 1931-02-20
NL26028C (en) 1932-09-15
US1800234A (en) 1931-04-14
BE362912A (en) 1929-09-30

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