[go: up one dir, main page]

FR822979A - Microphone accessory - Google Patents

Microphone accessory

Info

Publication number
FR822979A
FR822979A FR822979DA FR822979A FR 822979 A FR822979 A FR 822979A FR 822979D A FR822979D A FR 822979DA FR 822979 A FR822979 A FR 822979A
Authority
FR
France
Prior art keywords
microphone accessory
accessory
microphone
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
Schober
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 FR822979A publication Critical patent/FR822979A/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
    • 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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
FR822979D 1936-11-21 1937-06-11 Microphone accessory Expired FR822979A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2225509X 1936-11-21
DE506339X 1937-02-13

Publications (1)

Publication Number Publication Date
FR822979A true FR822979A (en) 1938-01-11

Family

ID=32070605

Family Applications (1)

Application Number Title Priority Date Filing Date
FR822979D Expired FR822979A (en) 1936-11-21 1937-06-11 Microphone accessory

Country Status (3)

Country Link
US (1) US2225509A (en)
FR (1) FR822979A (en)
GB (1) GB506339A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2718126C1 (en) * 2019-05-30 2020-03-30 Общество с ограниченной ответственностью "Научно-производственная фирма "МИКРОЭПМ" Acoustic system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614646A (en) * 1952-10-21 Frequency receiving bell with an
US2478783A (en) * 1946-06-17 1949-08-09 Louis S Scher Telephone mouthpiece voice silencer with plural silencing chambers
US2566975A (en) * 1947-01-18 1951-09-04 Leo L Beranek Voice silencer
US2846527A (en) * 1954-12-13 1958-08-05 Johnson Hartmann Telephone mouthpiece voice silencer
US7197140B2 (en) * 2002-07-05 2007-03-27 Asaro V Frank Sound baffle for portable telephone handset
EP2958613B1 (en) 2013-02-21 2018-03-28 Fisher & Paykel Healthcare Limited Patient interface with venting
US9264525B1 (en) 2014-12-04 2016-02-16 Leo Marshall Telephone mouthpiece shield assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2718126C1 (en) * 2019-05-30 2020-03-30 Общество с ограниченной ответственностью "Научно-производственная фирма "МИКРОЭПМ" Acoustic system

Also Published As

Publication number Publication date
US2225509A (en) 1940-12-17
GB506339A (en) 1939-05-22

Similar Documents

Publication Publication Date Title
FR822979A (en) Microphone accessory
FR813926A (en) Writing accessory
FR829844A (en) Loud speaker
FR801302A (en) Ashtray
FR778333A (en) Microphone
FR778446A (en) Microphone
FR778751A (en) Microphone
FR771073A (en) Advanced microphone
FR820185A (en) Saturator
ES142916A1 (en) SUPERPOSITOR CONNECTION
FR830910A (en) Improvements to telephone headsets
FR823746A (en) Loudspeaker membrane
FR48021E (en) Starter
FI17009A (en) Tryckpump
FI17735A (en) Ånggenerator
FI16896A (en) Isolering
FI16927A (en) Suksiside
FI16949A (en) Tandpaste
FI16952A (en) Hålstenstak
FI16959A (en) Smörjpress
FI16979A (en) Självregistrerande kartoteklåda
FI16985A (en) Spännhank
FI16997A (en) Hopsättbar rörmast
FI17000A (en) Sammansatt tätningsring
FI16874A (en) Sovsäck