DE1512735A1 - Acoustic resistance - Google Patents

Acoustic resistance

Info

Publication number
DE1512735A1
DE1512735A1 DE19671512735 DE1512735A DE1512735A1 DE 1512735 A1 DE1512735 A1 DE 1512735A1 DE 19671512735 DE19671512735 DE 19671512735 DE 1512735 A DE1512735 A DE 1512735A DE 1512735 A1 DE1512735 A1 DE 1512735A1
Authority
DE
Germany
Prior art keywords
acoustic
carrier body
acoustic resistance
sintered
grains
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.)
Pending
Application number
DE19671512735
Other languages
German (de)
Other versions
DE1512735B2 (en
Inventor
Gerrit Schenkel
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of DE1512735A1 publication Critical patent/DE1512735A1/en
Publication of DE1512735B2 publication Critical patent/DE1512735B2/en
Pending 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)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Exhaust Silencers (AREA)

Description

PHI: 4 516PHI: 4,516

Br. P. Boiibacli , * ' ' :Br. P. Boiibacli, * '':

Paten tan*-«I't 1 R 1 O "7 *3 KGodfather tan * - "I't 1 R 1 O" 7 * 3 K

Anmelder··H.Y.PHlIPS'GlOOLAMPENFABniEKEH IO IZ AOOApplicant ·· H.Y.PHlIPS'GlOOLAMPENFABniEKEH IO IZ AOO

Akie: PHN- 1516
Anmeldung vom: 23· März 196?Akie: PHN- 1516
Registration from: 23 March 196?

"Akustischer Widerstand,""Acoustic resistance,"

Die Ifrfindung betrifft einen aky.etiaoh«n Wider»- ™The invention concerns an aky.etiaoh «n Wider» - ™

stand für die Anwendung in einer Vorriohtung zur Umwandlung ^kustieoher in elektrische Sohwinßungentund umgekehrt, der aue einer Anzahl benachbarter fealnterter KetailkiSrner in einem Tra^cSrper beateht» die von dieeeo Tragk3rpei> zueemroengehaiten verden.stand for use in a Vorriohtung to convert ^ t kustieoher into electrical Sohwinßungen and vice versa, the aue a number of adjacent fealnterter KetailkiSrner in Tra ^ cSrper beateht "the verden zueemroengehaiten of dieeeo Tragk3rpei>.

Derartige Widerstände finden häufig in Mikrophonen Anwen« dungf Sie beetehen aus einer Anzahl durch Sinterung lueamnen- ; gebaqkener KSmer. Bisher iet es jedoch üblich, die Sinterkern er als ein Oanzes in Offfnungen.au· einea raeohanieoh hartt· Material, ''Such resistors are frequently in microphones Anwen "dung f you beetehen of a number by sintering lueamnen-; baked KSmer. So far, however, it has been customary to use the sintered core as an Oanzes in openings.au a raeohanieoh hard material, ''

.-/-■-■■ ■■-.■■■'■'■.- / - ■ - ■■ ■■ -. ■■■ '■' ■

wie Eifen oder Xe*iing, su preeeen. Diese Oeffnung^ird dann νδΐ-» ,like Eifen or Xe * iing, su preeeen. This opening is then νδΐ- »,

Hg -rm 4en Körnern Buegefüllt. D*l?ti ergab «ich der tttMHg -rm 4en grains Bueg-filled. D * l? Ti yielded «I to the tttM

(teas beim Einpressen der Sinterkörner in dieses Material die K3rner mechanisch verformt werden, wo duroh aioh auoh der akustisohe Widerstandswert änderte.(teas when pressing the sintered grains into this material the Grains are mechanically deformed, where duroh aioh auoh the acoustic Resistance value changed.

Die Erfindung is dadurch gekennzeichnet, dass der Tragkörper aus einem nachgiebigen Kunststof besteht. The invention is characterized in that the support body consists of a flexible plastic.

Bei Anwendung des nachgiebigen Kunststoffes wird der obenerwähnte Nachteil vermieden. Beim Einpressen bleiben die Sinterkörner unverformt, woduioh der Vorteil eraielt wird, dass sioh der akustische Widerstand nicht ändert.When the flexible plastic is used, the above-mentioned disadvantage avoided. When pressing in, the sintered grains remain undeformed, which has the advantage that sioh the acoustic resistance does not change.

Bei einem Ausführun^ebeispiei naoh der Erfindung ist derIn one embodiment of the invention, the

fc Tragkörper ringförmig ausgebildet, wobei die iäinterkörner in diesen Hing eingepresst werden· Diese Ringe können z.B. je nach der erforderliehen Anzahl in ein Rohr hineingeschoben werden, daß nachher in einem Mikrophon angebracht wird. Unter Verwendung von derselben Art Rohre können auf diese Weise verschiedene Mikrophonarten mit versohle' denen akustischen Widerständen versehen werden.fc support body formed in the shape of a ring, with the grains in these Hing can be pressed in These rings can e.g. be borrowed depending on the required Number can be pushed into a tube that is then placed in a microphone. Using the same kind In this way, pipes can be provided with acoustic resistances of different types of microphones.

Die Erfindung wird nachstehend an Hand der Zeiohnung näher erläutert. Es seigernThe invention is explained in more detail below with reference to the drawing explained. Seig it

Figuren 1 und 2 (Querschnitte durch akustische Widerstände nach der Erfindung, undFigures 1 and 2 (cross sections through acoustic resistors according to the invention, and

Fig. 3 im Längsschnitt ein Rohr mit einer Anzahl akustischer Widerstand··3 shows a pipe with a number of acoustic in longitudinal section Resistance··

Xn Flg. 1 ist auf einer ringförmigen Stahlsoheibe 1 eine runde Kunststoffaoheib· 2 befestigt. Dieser weist verschiedene Oeffnungen 4 auf, in denen akustische Widerstände in Form gesirfrrter Ketallkörner 3 angebr*eht sind,Xn Flg. 1 is on an annular steel washer 1 a round plastic aheib · 2 attached. This has different Openings 4, in which acoustic resistances in the form of gesirfrrter Ketal grains 3 are attached,

FIg, 2 zeigt ein änderte Ausführungsbeipiel, bei dem ein Metallrohr mit einem Flansch 5 auf der Innenseite mit einem Kunst·* •toffrohr 6 versehen iet, das seinerseits einen akuetisohen Wideretand γ wti&lty fpQföwfö jqpgggftwi Hftyaikornero besteht, Fig. 2 shows a modified embodiment, in which a metal pipe with a flange 5 is provided on the inside with a plastic pipe 6, which in turn has an acuetisohen resistance γ wti & lty fpQföwfö jqpgggftwi Hftyaikornero,

9OS82Q/O652 BADOHiQiHAt9OS82Q / O652 BADOHiQiHAt

In Pig» 3 ist ein Metallrohr 10 mit versohieäenen akustlsohon Wideretandaeinheiten versehen, die ins Rohr an din erforderlichen Stellen angeordnet sind. -In Pig »3 there is a metal tube 10 with acoustically sound resistance units provided the required places in the pipe are arranged. -

Eine derartige Einheit besteht aus einem Kunststoffrohr 11» in dem akuetisohea Widerstand-ematerial 12 angebracht ist.Such a unit consists of a plastic tube 11 » in the akuetisohea resistor material 12 is attached.

90 9 8 2 0/0652; "'. ■' SAD90 9 8 2 0/0652; "'. ■' SAD

Claims (3)

- 4 - PHN 1516- 4 - PHN 1516 PATEWTANSPRUECHEt 1512735 PATEWT CLAIM 1512735 1 .j Akustischer Widerstand für die Anwendung in einer Vorrichtung zur Umwandlung akustischer in elektrische Schwingungen und umgekehrt, der aus einer Anzahl aneinander anliegender, gesinterter, in einem Tragkörper untergebrachter Mete likörner besteht, die von diesem Tragkörper zusammengehalten werden, dadurch gekennzeichnet, dass der Tragkörper aus einem nachgiebigen Kunststoff besteht. 1 .j Acoustic resistance for use in a device for converting acoustic vibrations into electrical vibrations and vice versa, which consists of a number of sintered mete liqueurs lying against one another and accommodated in a carrier body, which are held together by this carrier body, characterized in that the carrier body consists of a flexible plastic. 2. Akustischer Widerstand nach Anspruch 1, dadurch gekennzeichnet, dass der Tragkörper die Form einer Ringscheibe aufweist, wobei die Sinterkörner in diese Ringscheibe eingepresst sind.2. Acoustic resistor according to claim 1, characterized in that that the support body has the shape of an annular disk, the sintered grains being pressed into this annular disk. 3. Rohr, das mit einem oder mehreren, hintereinander angeordneten akustischen Widerständen nach Anspruch 2 versehen ist.3. Tube, with one or more, arranged one behind the other acoustic resistors according to claim 2 is provided. 909820/0652909820/0652
DE1512735A 1966-03-30 1967-03-23 Acoustic resistance for electroacoustic transducers Pending DE1512735B2 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
DE1512735A1 true DE1512735A1 (en) 1969-05-14
DE1512735B2 DE1512735B2 (en) 1975-02-20

Family

ID=19796133

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1512735A Pending DE1512735B2 (en) 1966-03-30 1967-03-23 Acoustic resistance for electroacoustic transducers

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3102870A1 (en) * 1981-01-29 1982-08-19 Hans-Joachim 3300 Braunschweig Gieger HOUSING SPEAKER

Families Citing this family (10)

* 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
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 (en) * 2014-06-27 2018-02-28 株式会社オーディオテクニカ Dynamic microphone and method of forming back air chamber
US9451355B1 (en) 2015-03-31 2016-09-20 Bose Corporation Directional acoustic device
US10057701B2 (en) 2015-03-31 2018-08-21 Bose Corporation Method of manufacturing a loudspeaker

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 (en) * 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3102870A1 (en) * 1981-01-29 1982-08-19 Hans-Joachim 3300 Braunschweig Gieger HOUSING SPEAKER

Also Published As

Publication number Publication date
NL6604150A (en) 1967-10-02
US3381773A (en) 1968-05-07
GB1130661A (en) 1968-10-16
FR1515775A (en) 1968-03-01
BE696354A (en) 1967-10-02
AT271590B (en) 1969-06-10
DE1512735B2 (en) 1975-02-20

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