DE1512734A1 - Electrodynamic microphone with a closed air chamber located at least partially in a tube - Google Patents

Description

* FHlT 3

• Va / rah

Br. P. Rossbach

Patent attorney 1 C 1 O 7 Q /.

Änmeidef. NV PHILIPS'BLOEIUMPENFABRiaSi ' IÖIZ / 3A

File: PM-1336

Note from: 2ΐ · ΗϋΧΒ'Ϊ9.67 '· ...

"IILoktrodynaRiisohoa Mikrophon rait oiner wQnigßi; ons in oineH tube ftof indention goaohloaqonan Luf tkantnor.

The Jurf indung "beaiolit aich aiof ain eloktrodynamiaolios IH-mit oinen Goiiiluaa, which consists of a sound tubeS; .ji {; en K £ * ppe and 'u 3tiol boatoht, whereby a microphone capsule is provided in dor Kapp ©, which IWbran on the VordorsQito with dor ..ud.iqii1u £ t and on the nücksoite with oiner aioh teilwoiao in a goaohloaoonon Luftkarner located in the Jtiol angobraohtan socket;

BATH ORIGINAL

109321/0577

Such a) α liqueurphone is from the British patent. font 755,143 known. As a result of the closed in the 5tiol Luf tkaramor has diosoo Ilikroijhon oina relatively mildly fluffy Proquenakonnlinie, wShrond the characteristic curve has the form of a cardioid * . .

. The invention is connected in that the buohao is movably attached in the 3tiol and can be actuated by a raeohani3Ohon bodionunos organ in such a way that the back can be connected to the outside air. Bios has the advantage that _s on öinfaoho Woiso the Hioht "ψ can boi almost gleichbleibender'Froquonzkonnlinie are characteristic to a considerable llaaae booinflusot * Identify the Rüok" aeito dor I-dos Ionbran microphone completely gegon the Auaaanluft iot aohloaaen abge _*? has the Richtkonnlinio dos Ilikrophona a nearly gleiohniSsöigon forward, ie, DAAs _t Oino approximately kroi3f8rraigo characteristic is obtained, dio results in all directions nahoau same linpfindliohkeit. Henn the ßClokaoito dor r.embran but not against the auaaon air abgoachloa-ion iot, iüt dio linpfindliohkoit dos microphons on einor Soito maximal and on dor & c {jenübDrliogondon ioito gloioh KuIl.

Sin -uaf tUiruncobo ispial of an Ilikrophona after dor Brfin » 20 dung, in which one air chamber. or unfaoaondo Buohao before iat> is daduroh marked zoiolonot, that the socket is neglected to oinoia Undo and on the other 3tide of fön iat and innorhalb doo stioleo in the longitudinal direction can be moved, whereby the offon © Sndo in einor & age There is 33uoh30 on the back of the 1-microphone capsol. ^ uf simple '.'oiso, nSclioh duroh Vjroohieben dor Buohaa, kßnnon all Pdchtkannlinion awiachan dar Kroiskonnlinie and dor Kar- * dioidkennlinio eraiolt.- With oinor AbÖndorung this Aupfülirungsboinpioloa iat oin Ilikrophone, the socket with a fit in the stem attached iat and the moohaniaehe control organ by an on the ■ Ausaenunifang dor Buohas attached, aioh in oinom LSngssohlitz in

SO 98 2 1/057 7 BADORiQiNAL

the wall of the stem is formed while a helical spring presses against the closed inde of the socket.

Ss is particularly favorable if the mechanical operationS "· organ further contains a ring that is attached around the stem and on the Innonsoito provided with an inclined guide i3t, on the the crouch fits.

When the rine is turned, the sock slides on it, inclined guide in the Hing along; one acts on the squat Force a, the dio socket ic ~ tiol vex'sohiobt.

A completely different version of the case according to the JÜrfindung is' " known by the fact that the Luf'tkamuor on a joite from the stalk '. and: on the other side of oinor with a fit in the o'tiel lying , rotatable socket limited eats, whose end facing the capsule with one or more eccentrically mounted openings is provided, which correspond to an opening in the back of the capsule, that are connected to the back of the llonbran, wShroid «w External circumference both in the Buohao and in the stem one or several Oeffnuncon attached, those mentioned in it. Situation entaproohon each other. Instead of the Buohae ira stem au yeraohiobon, »ie now ge j turns. The ßichtkennlinio doo microphones can thereby be biased that the openings in the socket with an acoustic liidoratand be in advance.

It is furthermore particularly favorable if the raechanic Baclionuno'Gorgan is attached to the outer surface of the Buohae by a vM. is formed in einsia Quoraohlita in the% nd of the stem located crouch "

The invention is subsequently based on the nSlicr explains »'

L's zQigon * ■ "" ⁵¹⁰ Oi

· ¥ ± Q, i in Lfin ^ aaohnitt oin: ^r i!: Ro; .hon nucli lor: -rTi "

I Π Γ "

PEM 336

Uikrophone, and

Fig. 3 partly in LSngssohnitt oin another execution example des IIikroplione, after the discovery.

Pic »1 is an electrodynamiaohealiicroi» phon in LÄnjsaohnitt, at do:.; , the llikrophongohÄuoo 1 auo oiner solialldurohlSoaigon cap 2 and a metallic geaohloaaonen stem 3 boetoht. In the cap 2 there is a microphone socket 4, the membrane 5 of which is connected to the outside air via the Hombransohutagliod 6, and via channels (not shown) with the RuOksoii / O 7. Its socket 8 is located in the Ctiol 3 and is pressed for its rontoeito by a Soliraubföhler 9 soGon oinon Ounmiring 10 on the Rflokaoite 7 of the Iiikrophonkapael 4 C ^G. On the tiol 3 there is a threatening hanging 11, which is coated on the inside with oinor plastic buohso 12. This has a. Ausaparune 13 , in which a llookon 14 provided on the inside of the rink 11 fits. It also contains 3hiohae an achrttß · Ptthrung 15a, on which a 3tift 15b is attached. '; · This liooken lies free in a LSngasohlita 16 and is stolen from the socket ß »T'onn der Hing 11 aoS Turns xfird, bowegt oioh the r.tift ijfo zvrongäiaufiij gor .; Äaö dar PÖhrunc 15a near the front or gobenonfftlle near the back

* KanSle in capsule A the ßlokaeite. for Honbran 5 orroiohon »Bio · Directional characteristic is given a cardioid shape. 1 / If socket B is completely in contact with the hanging 10, the chall cannot reach the back of the Ilombran. * The connection is then circular.

Fig. 3 shows another AuaffUirunüabeiapiol. Dor stem 3, ^Λ iat doing toilveiae broken goüoiohnet. In the 'tiol 3 there is a tightly fitting pas gong a ku3? Ao rotatable socket 8 on which a crouch 15 is activated

909821/0577 BATH ORIGINAL

■ - 5 - PHtl'1336

is that sioh froi can move in a guor slot of the jtioln.

'... Iia inneron liado dos.: Tiolo 3 are Ooffnuncon 17 vorgeaohon, that © work together with Oeffjiung'en 1G in socket 0 »Oio Ooffnungcn 18 are with © inem" tück Gazo ■' \ ^r , finished.

The Buchae is preceded by the word "Ooffnuncen 20" theirseito with openings 21 ira C-biol. 3 zuaamHonvirken.

^; Dio Ooffnunffon 17 and 10 or «20 and 21 address each other in oinar position dor Buohso 8 and doa 3tioloa 3 · In diosea" Palle the Sohall can do the RCUsksoito dor Hoiabran orreiohon. In dioaor Lago the calibrating line dos "t! Ikr-) phona the ■ cardioid fosr.-.

BAD ORIQfNAt

908821/0577

Claims (1)

- 6 · '. "OT 1336 ») Klektrodynarniaohea microphone with Aaïa housing, aas off a sohailaurehlÄasigan cap and oinea -> tiol, where in the Cap a microphone capsule housed lsi », the membrane of which on the Front side ni-f & or Ausaonluft and aiii the Httokseite nit einör at least partially in oinor to stem attached to Buohso ran indenden closed Luftkaamor in connection, thereby gokennseichnet, that the Buohse botroglioh ir :; Stalk attached iat And from a cmahanisohön The operating organ is so embroiderable that the sfiekseito is Membrane so that outside air can be connected « ™ 2. Eloktrodyaasniaohea microphone naoh claim 1 with a die Luftfcaciriior completely comprehensive Huohaoj thereby gökenoiBeiohaot »that the Buohso at one 3ndo gosohlosaen and aro the other end is open and iia The handle can be moved in the longitudinal direction Buohse the open linden tree is attached to the back of the microphone capsule 3. ü3.electrodynaraiaahG3 microphone close to claim 2, thereby gokonnseichnot, dasa the Buchae with a fit in the 3tiol attached plumb and the meohaniaohe Bedionungaor ^ an at the Ausaenurafang 'of the Btiohae angooraohten and located in a lenghtsahlite in the wall of the stem Crouching is formed while a r> ohraubenfoder against the closed undo of the jack drflokt « 4. SLoktrodynaiaisohes microphone NaOH ^ opruoh 3, characterized kennaelohnet * go) iaeohanisohe the control member further dasο a Hin • athSlt, which is mounted on the stem and on dam & qt inside with co finer inclined guide is provided, on which the cam attaches «co 5, Slektro & yaamieohes microphone xwtoh claim 1 _t daduroh ge · OO. [^ kennaöiohnet, the »the Luftkaonter on one side roa stem uad on σ the other side of a threatening baron with a fit in the stem -o socket is b $ erenat whose * end facing the capsule old one or ν several axeentri.joh attached openings v «3Miehen, which i * corresponded to a position of openings in the locomotive side of the capsule, which with BAD ORIGINAt - * - J - ■ Hfl: 1336 dor Rttolroeite of Ifo & bxan in connection stohoni vrahrend am Ausaen- circumference both in the lueslise as in the stem one or aelaroro openings attached ain <i _f die in. the place / Kuiton Lago oiiiander entaproch-on » 6. 'iLoktrod ^ HaKisOiies Ilikroplion naoh claim 5, daduroh ge Without the opening in the Bucliso with an acuatiaolien liidorstand.veraoliefi »iad» ' 7 · Kloktrodynaniaolxos iliicrophon naoh den AnapriloUen 5 un && t by the fact that the raaohaiaiaohe Dodienungsorcan durob one attached to the outer fang of the Buohae and sioii in oinöm Quoraohlita in the ^T «and the stem" bofindond Ilooken is formed. BATH ORIGINAL 909821/0577