DEP0053201DA - Condenser microphone in which sound is applied to an electrically effective membrane from both sides - Google Patents

Description

Condenser microphone, in which an electrically effective membrane is acted upon by both conductors with Beiiall.

Zueate su patent · ·. (Registration ρ 50 547 VSfcIIa / 21a B)

If Bss main patent relates to a Kondensatoraikrophon, is applied at äem an electrically effective Ueabran from both sides with Sphall, duroh in a force acting on the transducer to a Membraneeite "acoustic © La ^ fzeitglied, iae bo dimensioned _f that a" preferably Siaeeltige _t Kiehtwirkung duroh The displacement between the sound generated on the front side of the membrane and the sound hitting the membrane corner »Bas Lamfsseltgliei causes a constant delay in the transit time over the frequency range transmitted below or one of the cables. This is to a corresponding ^^ time delay as will be scored Sohallmaweg between the front and Hiickseite of microphones * Me Laufzeitversügerung ia Schalluaweg is assumed to be frequency independent constant.

According to the invention, it is proposed in a further development to provide a Membranselte Sehallirwegglieder in the Schallweg ^ enigetenB aar , the jgmi & mAmmi ** k +. At least in a sub-range of the frequency band, a frequency dependency of the transit time in the SchaXluaweg between the front and back of the microphone.

The advantage of these Schalluawegglieder ordered Claria _f that Sas Laufüeitglied the microphone does not necessarily have to bring about the eu transmitting ^ roquenabereioh or a part of it also concatante Iwatz eitversbgerung. Msa as a result, aaefe ei "fet © S" IMT cheap Lantfaeitglieder use and ersielt old this trotadea over the entire frequency range, an approximately

gleiohaaselge EicJatwirkang · SweokaIesig is ties by erreloht "dm erflndungegemäß dorefa special assessment" ad tt "order of Schallaawegglieder the ^ aufaelt ira üchallunweg so * least approximated the gleiohe fr @% meiaeebhöJigigteit has like the one on the Sohall Bi" a äiezabrunoelte acting "acoustic run Sliding link. In the simplest case, a single Sehall detour link is sufficient. In a before "ugten Auefuhrungeform the Srfindaag Bind the Scfcalluawegglleaer as close as possible before the SSekeeite mnd / or eigeoriaet before Vordereeite of Uikrophone" They are advantageously aas a material "that at low Prequenaen well TOhslldurchlätwig lot and with" wiöM @ ad © r te © «* {Peas has a dampening effect» & .B. Wire gauze and / or Oewebeatoff, if necessary 4b several layers · Particularly suitable let «in Sckalloawegglied In Pora a part of this material» which is arranged on the Htiokeeite and / or on the ¥ oräereeite the middle »« · phone.

Me invention and other Sineelheiten are based on the Fig * 1-4

for example explained.

In Fig. 1 a condensate microphone according to the main patent is shown »which on the front side the membrane 1 and on the front side the layer B of felt» cotton wool or similar »damping material» the outside with the air space behind the * »embran 1 the running side forms. Correspondingly, according to the main patent, running members with different designs can also be forfeited "£ .3" with a wide leabras on the microphone side. Look at the other way around the FaH _t let the Hella * represented by the arrows ρ.! from Mstea to the

ItokBgite Sea ISkreptoae on meets. This Sekall reaches the front 4 © r ^ eabran S alt a delay out ep counting the Laofeelt i® Sel »Ilaaw # g U _f the equal to the thickness d the microphones« tjifrfigXieii the Kadius r 1st · Bie running time ia Sctelleaweg U let aorzaalerweiee ± t®quemwaäfoMngig and constant · Eatßprsöfeeai should meet the © @ bieher naoh de »main petitioner also for the term tot L » 4f «eitgli © Ä eitgli. ββηϋβ Fig. 2 iet make the Brfindong flttf the Rüofcoelte of the MiteopIiOBe at a distance of a few Äillliaetcrn as SolialliiawggXiefi & Xe disc Sr arranged # which consists of a * Β · a »Zteahtgaee and / or tissue _{material» #} »eres » _f gÄöBeafalle ame atiir Bieeoe lateriel asked aie slgensohaft _for the tiofen frequencies well through the sound and old "Ä0lm" iiier irequenxs external influence on the sound. Mf deep fö 's reach Consequently duroh the disc Br ungefeindert hindureh as Ateb _e 1 star Hikropli © aräök @ eite mi About the BehaiXuraifeg U aar ilemteanvorieyeeite * Fto the .tiefen Frequenisen therefore like without disc Sr creates a Laufaeitversaügerung according to the Sntfernung d * r. For the high frequencies, the Sr disk is only slightly or not echalldurahläseig. The arrangement works aaa »geia according to Fig. 3 so» tat »öer echo of the dashed arrows p * tmwirfcsaii let and only Ser thereof the arrows ρ es hand iee microphones iargeetelli © sound mx effect germinates® This is ge ^ esgea» on the way awieeiieii least MÜa? op ! 3.02ss © i »äu @ e mi the log» Br from behind the microphone m get »ie on a route from the position r in the disc Sr« to the front he arrives as in Fig. 1 and 2 Via the Schalluaweg XS * d + r. The effective sound at high frequencies vmmg U is therefore equal to (d + r) - r _f ie equal to the EikiroplMaiiek © d «Dor Bchalluaweg O and also lasts the transit time & m Selialle ei ta» microphone core »is therefore smaller for the higher» Frequanseii ale at the low Frequenaea.

The Schalluzaweg member in Fora of the disk aas Drahtgaae and /

or fabric tame in aaal © g © r also arranged in front of the front of the microphone «. It is also possible »on beiieia pages

To order one sefeeifee each. A microphone of this type iet la

Fig * 4 shown, Me in front of the V ^f Orderaeit © is located © Scheid © is Mer ait Sv and the Seineifee Sv located in front of öer Büetasit © alt Sr bnae leime te Dureli äie in front of the Seineifee Sv, you also get a throw

In Sime the inventing "when the sound of the sound hits the microphone from the front, while the intermediate disc Sr only works" when the source of the sound of sound is at the back. To clarify the effect of the front sole Sv, Jetat is assumed> that the arrows ρ bsw. p ' shown © Sound comes from the front * With liotiea Irequenaen p * is suppressed and the sound ρ as lande only passes through the Zwleohonraua Bwiuchen of the disk Sv and the Sifer © - ghöngelÄiää «gur aesbraa« Ie is also here the Usweg U the same the microphone volume d. Up driving force && the Metabran K _t ees the üräften reaultiert from the voraer- and ^il Uokeeite takes namely "unehaender FrequenE off because at high frequencies as the two force components over 180 ° Bind verechoben in their Phaee against each other, Imurek the erfiadaagegeieSe Asorö "liiag des SehalliiawgglieteB in the form of the disk Sv in front of the front, the phaeendlfferen" between the front and the rear force likewise decreases accordingly. The Frequena where the Phaeenvereohiebung between the two force components great ale 180 ° is shifted custody as a result, to the top of the F ^ _f eijaesiabaM eoöaßs the Frequensabfall dee microphones erot tee! More frequencies, preferably at those near the transmission range, occurs. 3> He advantage of the front disc Sv is thus "dase of ttbertragungsbereloh dee microphones for higher frequencies Mm is extended.

lie disc _fl Sr bsw » Bv have aweckaaeoig the same bareii · *» knife as ton Milcrophöiigeliätts © *

Claims (6)

(Sfeue) itetentary proverbs 1 "XeMeiisatoraiteopiion _t at the elm © letetrleeli effective ärnnkmu (U) of both" is applied to pages with sound and Dürä a aaf the Seball aar "inen ^ esabraneeite acting akuatiechea Äufseltgliei one vorstigeirei® © unilaterally ©» BieMwirkoag part FliasesvergeMetoaiig swieobeiti the on the ^jii TObraafoiiereeite "rat which is eraeagt on oils ^ enbranr üokeeite aaf aptly" sound, Shah patent. . . (Registration ρ 50 347 VIIIa / 21a ² D) »characterized in that the © in the Söhallweg provides at least one hemline on the Sohallomwesglieder Siad _t die aamindost in one; haggling of the fr ^ qaenabandes © in © freqae "sabMögigkeit der runtime is Schallaaweg (U)" wipe the front and back of the ^ ikroplioae cause * versugeweiB © in such a way, & me that runs in the Schallusweg (U) decreases with acceptance " 2. Condenser microphone according to AiiBprnah 1 _y characterized »ä & Bß ömroh appropriate dimensioning and arrangement of the SehaHBrnwe, dividing the running time in the sound detour (U) gumi» Äiäst approximates the same Prequenaabhiingkelt as the acoustic running side element acting on the sound aar »a semi-circular side. 3 · Eondenaatormikrophon naofa speech 1 or by it «is» © iel net that the sound detour elements are arranged as close as possible in front of the ^il Ockeei and / or in front of the front of the jikro ^ phone » 4 · condenser microphone £ © t m acts according to one of AnBprtiche 1-3, characterized g & luitmmiühmt that the Sehallumseggiieder made of a material UEM well sehalldurohläseig at low Freqtieiiseri with increasing lfmqmm absorbing, eB Srshtgass and / or © ewebeötoff, given file in several Sohichten . 5 * condenser microphone according to claim 4, characterized by " §a" 8 a ä © lmllt "w" ggll © ä aas a disc (Sr), e.g. ame Brahtgasse and / or textile fabric, which was a short distance in front of the microplion _f ζ · 3 · in front of deamesi Mickeeite "is ice- grounded in such a way that the sound at high r <* cjuenKen is waved, cwlschen on the couch & © a likrophoageleiiee and the disc (Sr) get into the microphone" 6. Siafeneataraikroptai according to claim 5 »äadwelfai gekeanaeteteito Äaee eiae Sehelbe (Sv) ^ &# B * ame SraMgaee and / or Ckroefceir & QFF, 1st disposed in an analogous Weiee before OCE Mitorophoirirordoreeite" gegobononl'alle autsseyde® eageoartaete in connection with a front of the Etickßeite " Soheibe (Sv). ? · Probe net microphone according to claim 5 or S _f oekeaa characterized that the 8 di © Ucheibe (Sr or »3v) the same IJurchme β oer fees as the microphone housing ·