GB1130661A - Improvements in or relating to acoustic resistances - Google Patents

Improvements in or relating to acoustic resistances

Info

Publication number
GB1130661A
GB1130661A GB13975/67A GB1397567A GB1130661A GB 1130661 A GB1130661 A GB 1130661A GB 13975/67 A GB13975/67 A GB 13975/67A GB 1397567 A GB1397567 A GB 1397567A GB 1130661 A GB1130661 A GB 1130661A
Authority
GB
United Kingdom
Prior art keywords
tube
metal particles
sintered metal
supporting member
synthetic resin
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
GB13975/67A
Other languages
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1130661A publication Critical patent/GB1130661A/en
Expired legal-status Critical Current

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)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
GB13975/67A 1966-03-30 1967-03-28 Improvements in or relating to acoustic resistances Expired GB1130661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6604150A NL6604150A (ja) 1966-03-30 1966-03-30

Publications (1)

Publication Number Publication Date
GB1130661A true GB1130661A (en) 1968-10-16

Family

ID=19796133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13975/67A Expired GB1130661A (en) 1966-03-30 1967-03-28 Improvements in or relating to acoustic resistances

Country Status (7)

Country Link
US (1) US3381773A (ja)
AT (1) AT271590B (ja)
BE (1) BE696354A (ja)
DE (1) DE1512735B2 (ja)
FR (1) FR1515775A (ja)
GB (1) GB1130661A (ja)
NL (1) NL6604150A (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1245803A (en) * 1967-09-28 1971-09-08 Matsushita Electric Ind Co Ltd Microphone device
US3930560A (en) * 1974-07-15 1976-01-06 Industrial Research Products, Inc. Damping element
DE3102870A1 (de) * 1981-01-29 1982-08-19 Hans-Joachim 3300 Braunschweig Gieger Gehaeuselautsprecher
US4837833A (en) * 1988-01-21 1989-06-06 Industrial Research Products, Inc. Microphone with frequency pre-emphasis channel plate
US8615097B2 (en) 2008-02-21 2013-12-24 Bose Corportion Waveguide electroacoustical transducing
US8351630B2 (en) * 2008-05-02 2013-01-08 Bose Corporation Passive directional acoustical radiating
US8630435B2 (en) * 2008-08-08 2014-01-14 Nokia Corporation Apparatus incorporating an adsorbent material, and methods of making same
US9078063B2 (en) 2012-08-10 2015-07-07 Knowles Electronics, Llc Microphone assembly with barrier to prevent contaminant infiltration
JP6284446B2 (ja) * 2014-06-27 2018-02-28 株式会社オーディオテクニカ ダイナミックマイクロホンおよび背部空気室の成形方法
US10057701B2 (en) 2015-03-31 2018-08-21 Bose Corporation Method of manufacturing a loudspeaker
US9451355B1 (en) 2015-03-31 2016-09-20 Bose Corporation Directional acoustic device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152205A (en) * 1937-03-18 1939-03-28 Ingersoll Rand Co Muffler
US2576610A (en) * 1944-04-10 1951-11-27 Gen Motors Corp Restricter
NL190970A (ja) * 1954-01-11
US3293379A (en) * 1961-01-17 1966-12-20 Gorike Rudolf Earphone
US3163256A (en) * 1962-06-06 1964-12-29 Corning Glass Works Muffler with ceramic honeycomb baffle
US3163255A (en) * 1963-04-04 1964-12-29 Air Mite Devices Inc Exhaust valve silencer with sintered metal silencing disc
US3270834A (en) * 1965-09-10 1966-09-06 Atlas Copco Ab Pneumatic tool having exhaust noise reducing means

Also Published As

Publication number Publication date
DE1512735A1 (de) 1969-05-14
DE1512735B2 (de) 1975-02-20
AT271590B (de) 1969-06-10
US3381773A (en) 1968-05-07
BE696354A (ja) 1967-10-02
FR1515775A (fr) 1968-03-01
NL6604150A (ja) 1967-10-02

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