NL78163C - - Google Patents

Info

Publication number
NL78163C
NL78163C NL78163DA NL78163C NL 78163 C NL78163 C NL 78163C NL 78163D A NL78163D A NL 78163DA NL 78163 C NL78163 C NL 78163C
Authority
NL
Netherlands
Application number
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.)
Publication of NL78163C publication Critical patent/NL78163C/xx

Links

Classifications

    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
NL78163D 1950-05-11 NL78163C (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL670868X 1950-05-11

Publications (1)

Publication Number Publication Date
NL78163C true NL78163C (ja)

Family

ID=19800508

Family Applications (1)

Application Number Title Priority Date Filing Date
NL78163D NL78163C (ja) 1950-05-11

Country Status (4)

Country Link
US (1) US2645301A (ja)
FR (1) FR1036501A (ja)
GB (1) GB670868A (ja)
NL (1) NL78163C (ja)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697141A (en) * 1952-04-28 1954-12-14 Western Electric Co Noise eliminating device for telephone transmitters
DE975174C (de) * 1953-11-26 1961-09-14 Krone Kg Vorrichtung zur Glaettung des Frequenzgangs des UEbertragungsmasses eines Mikrofons
DE1041081B (de) * 1953-12-19 1958-10-16 Nordwestdeutscher Rundfunk I L Mikrofonanordnung aus zwei zusammen-gefuegten kapazitiven Mikrofonen
DE1041082B (de) * 1953-12-21 1958-10-16 Nordwestdeutscher Rundfunk I L Kondensatormikrofon mit einstellbarer Charakteristik
US2974665A (en) * 1954-02-12 1961-03-14 Armard V Motsinger Gas mask speech transmission
US3014099A (en) * 1955-01-10 1961-12-19 Fiala Walter Electroacoustic transducer
BE554110A (ja) * 1956-03-16
US2966954A (en) * 1957-07-11 1961-01-03 Celotex Corp Acoustical correction element
US3027965A (en) * 1957-12-23 1962-04-03 Johns Manville Acoustical panel
NL267294A (ja) * 1960-07-22
US3370567A (en) * 1963-07-03 1968-02-27 Packard Bell Electronics Corp Remote control unit
US3637040A (en) * 1968-08-01 1972-01-25 Amplivox Ltd Ear defenders
US3787642A (en) * 1971-09-27 1974-01-22 Gte Automatic Electric Lab Inc Electrostatic transducer having resilient electrode
JPS5156618A (en) * 1974-11-13 1976-05-18 Yukimatsu Nakamura Supiika
DE2831411C2 (de) * 1978-07-17 1983-10-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektroakustischer Wandler mit mit piezoelektrischer Schicht versehener Membran
JPS59216397A (ja) * 1983-05-23 1984-12-06 ハ−マン・インタ−ナシヨナル・インダストリイズ，インコ−ポレイテツド トランスジユ−サ、該トランスジユ−サの同調方法及び該同調方法に使用するトランスジユ−サ
AT378306B (de) * 1983-08-29 1985-07-25 Akg Akustische Kino Geraete Verwendung eines gebuendelten laserstrahles zur herstellung eines akustischen reibungswiderstandesfuer elektroakustische wandler
AT400910B (de) 1994-06-16 1996-04-25 Akg Akustische Kino Geraete Akustischer widerstand, insbesondere für elektroakustische wandler
US7165647B2 (en) * 2003-12-18 2007-01-23 Pei-Chau Lee Mechanical acoustic filter by erosion etching
US9426555B2 (en) 2014-12-23 2016-08-23 Ever Win International Corporation Acoustically tunable headphones
CN106032687B (zh) * 2015-03-09 2019-02-19 泰奇想股份有限公司 错位导通多穿孔吸音板
SG11201805312VA (en) * 2015-12-22 2018-07-30 Razer Asia Pacific Pte Ltd Mesh assemblies, computing systems, and methods for manufacturing a mesh assembly
US10134379B2 (en) * 2016-03-01 2018-11-20 Guardian Glass, LLC Acoustic wall assembly having double-wall configuration and passive noise-disruptive properties, and/or method of making and/or using the same
WO2017163658A1 (ja) * 2016-03-24 2017-09-28 富士フイルム株式会社 防音構造、及び防音構造の調整方法
DE102016114314A1 (de) * 2016-08-03 2018-02-08 Sennheiser Electronic Gmbh & Co. Kg Verfahren zum Herstellen eines akustischen Widerstandes und akustischer Widerstand
FR3069579B1 (fr) * 2017-07-25 2019-08-30 Safran Aircraft Engines Panneau acoustique et ensemble propulsif associe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1804688A (en) * 1927-06-28 1931-05-12 Bell Telephone Labor Inc Acoustic device
US1915358A (en) * 1930-04-11 1933-06-27 Bell Telephone Labor Inc Electrodynamic device
US2022060A (en) * 1934-08-29 1935-11-26 Bell Telephone Labor Inc Acoustic device

Also Published As

Publication number Publication date
US2645301A (en) 1953-07-14
GB670868A (en) 1952-04-23
FR1036501A (fr) 1953-09-08

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