DE1801911A1 - Microphone arrangement for recording interviews - Google Patents

Description

180191T

Akustische and Xino ~ & eräte Gesellschaft mbH in Vienna

Microphone arrangement for recording interviews

The microphones used in recording interviews have spherical or unilateral directivity. They are often designed as Hahbespreohungsmikrophone, that is, they should be kept as close as possible to the speaker's dog in order to achieve a natural reproduction while eliminating the ambient noise. Since an interview is generally limited to questions and answers, the person holding the microphone must always be careful to bring the microphone close to the speaker or his mouth in good time. However, Sa's microphone must not be taken back prematurely, as this could result in the loss of the last spoken words, or even entire sentences if handled carelessly. If the interview is broadcast on television, then it is also annoying

the constant back and forth movement of the microphone.

The invention seeks to avoid all of these disadvantages. It achieves this by means of a microphone arrangement, which is characterized by the fact that at both ends of a common, elongated, angular or otherwise shaped carrier, expediently in the form of a housing, a Microphone with preferably one-sided directional characteristic, preferably arranged in opposite directions, are.

^ · If you switch according to a further feature of the

Invention of the two directional microphones electrically against each other or if you connect it to the amplifier input via a switch, you can use an essentially eight-shaped The directional characteristic of the arrangement is preserved, in whose main axis "if the arrangement is held correctly, the two Speakers "are located. Sources of interference noise to the side then cause little or no interference voltages at the output of the arrangement. Disturbing reverberation can also affect this Way to be largely eliminated, and from the diffuse

So reverberation field is only absorbed by about a third of the sound energy .

According to a further feature of the invention, the arrangement can be made so that single microphones steok-, can be stolen or pushed in on or in a common area Carriers are arranged, which of course does not exclude that the microphones with their holder (carrier) auoh a Be able to form unity.

'To adapt the microphone arrangement to some Special cases, for example, when between the two users the microphone arrangement according to the invention has a strong undersize in size exists or calibrates the people at different altitudes, it is expedient according to the invention to arrange the microphones pivotable or foldable in the holder.

For the purpose of better accommodation of the microphone arrangement according to the invention, it is expedient to use the handle the same can also be plugged or screwed and possibly also pivoted.

Finally, according to the invention, the microphones auoh have different sensitivities, or through Regulator can be set to the desired sensitivity, expediently the bowler in the arrangement or a part of the same are provided. One will make use of this measure in particular if the interviewer several people sit across from each other, for example at a table, so that different meeting distances are possible for the arrangement result. *

The invention is now intended in the following part of the description will be explained in more detail with reference to the drawing, in which the Pig · 1 to 7 different embodiments of an inventive Represent microphone arrangement, whereas Pig.8 shows prevalence curves, which can be found with suitable electrical Interconnection of the individual microphones.

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.The microphone arrangement shown in Fig.l for recording. Interviewe "has two microphones 1 and 2 that can be screwed into a handle 3 , both of which have one-sided sound characteristics. The handle 3 is designed in the manner of a pistol grip" 4 denotes a switch in the handle 3 with which various switching operations can be carried out. The switch can be used, for example, to switch on only one microphone at a time, or to switch the arrangement on and off as a whole, or to be able to set different directional characteristics.

At the lower end of the handle 3 there is a grommet 5 through which the connecting cable is led out. The arrangement is handled in such a way that the interviewer, who is holding the arrangement in his hand, has the microphone 2 facing, and the microphone 1 facing the interviewee. Both microphones 1 and 2 are provided with a thread at one end so that they can be screwed into the handle 3 at the intended locations. .

··. · Pig.2 shows a further development of the embodiment shown in Pig.1. In this example, the microphone ΐ, which is assigned to the interviewee, is arranged in handle 3 so as to be pivotable about an axis 6. Such a pivoting arrangement is advantageous when there are considerable differences in size between the two speakers or when the two are at different heights. A switch can be provided at 4 or 4 '

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The example shown in Figure 3 with in horizontal plane versohwenkbaren microphones 1 and 2 is especially useful when the discussion partners are standing next to each other, as is usually the case with TV interviews is often the case. Microphones 1 and 2 can also be used here be screwed, for example, as indicated in Pig.1 is, but they can also be in any other. Porm be attached interchangeably, for example by means of a ' Plug connection or a magnetic holder.

Am particularly simple and easy embodiment of the inventive arrangement Pig.4 "shows the two microphones 1 and 2 are SiOH at both ends of a pipe J _t which in turn is mounted again in a holder. 3 The holder 3 can be made of elastic material, so that the tube 7 carrying the microphones 1 and 2 can easily be clamped into the upper recess of the holder 3. A switch 4 can again be accommodated in the handle 3.

Instead of the tube 7, the housing common to both microphones can also be designed as a flat prismatic hollow body, as can be seen in Pig.5. The housing that accommodates the two microphones 1 and 2 is labeled 8. The switch 4 can be arranged either on or in the housing 8, or as a switch 4 ¹ on or in the handle. .

Pig. 6 shows an example in which practically

9 o Q ρ? r / Ci " ⁷ 1" i

table only cylindrical parts are provided. The two Microphones 1 and 2 are in a head labeled 9 / of the cylindrical. Handle 3 arranged where they use union nuts 11 are attached. In the head 9, the two microphones can be pivoted in a vertical plane, see above that they finally enclose an angle of 180 °. Instead of the switch 4 is in this embodiment a switching ring 10 is provided, which organically adapts better to the cylindrical cables of the arrangement.

An embodiment in which two single microphones 1 and 2 can be used in a common handle-shaped part 3 is shown in FIG. shown. The oil can be designed so that, when placed next to one another, they fill an approximately prismatic space.

In Figure 8, the frequency curves are shown, which are in electrical Oegeneinanderschaltung of the two? I'ikrophonau8gänge organs "The curve A represents the frequency response curve at 0 °, the curve B at 180 ° Schalleirifall represents" WO 'reasoned with the microphones on a Lie straight lines and their directions are opposite to one another. Curves A and B apply to the entire © arrangement «Pig.8 karai, it can now be seen that the prequens curve for 90 ° sound incidence _t, which is marked with C, is precisely in the area of greatest hearing sensitivity, i.e. between 400 and 1000 Ha, by at least 20 db is below curves A and B. From this, I derive the fact that interference noises arriving from the side are bsi

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the arrangement according to the invention not or only very strongly come into effect in a muted manner. Even the diffuse room sound is only used to a third of its energy. The individual microphones can be used according to the dynamic condenser or other principles work.

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Claims (10)

: Claims »'■■■■, 1. Microphone arrangement for recording interviews, characterized in that at both ends of a common, elongated, angular or otherwise shaped carrier (3) »appropriately in the form of a housing, each with a microphone (1,2) iait preferably unilateral directional characteristics are preferably arranged in opposite directions. ι ' 2. Microphone arrangement according to claim 1, characterized daduroh, that the coin microphones can be plugged in or screwed on are arranged on a common carrier (3) 3. Microphone arrangement according to claim 1 or 2, characterized characterized in that a handle is fixed, pluggable, rotatable or screwable on the carrier or housing (3) is. . . '4. Microphone arrangement according to Claim 3, characterized in that that the microphones (1,2) with the handle (3) represent a unit. , 5. Microphone arrangement according to one or more of the I * Claims 1 to 4, characterized in that 4sra the microphones (1, 2) on the bearing (3) are arranged to be pivotable or foldable. 6. Microphone arrangement according to one or more of claims 1 to 5, characterized in that the individual microphones are arranged so that the directions of maximum ■ 9Ö9821 / 0752. -8th- INSPECTED Sensitivity directed against the "two interlocutors 7 »Microphone arrangement according to one or more of the Claims 1 to 6, characterized in that the individual microphones (1, 2) have a one-sided directional characteristic and the outputs are electrically connected to each other, - - 8. Microphone arrangement according to one or more of claims 1 to 7, characterized in that the individual microphones (1,2) have a one-sided directional characteristic and their outputs via a switch to the common Amplifier input are performed. . ' 9 »Microphone arrangement according to one or more of Claims 1 to 8, characterized in that the microphones (1,2) have different sensitivities or have control organs different "sensitivities are adjustable» 10. microphone arrangement according to claim 9, characterized in, that the control members are arranged on or in the handle part (3). 11 / Microphone arrangement near one or more of the Claims 1 to 10, characterized in that the handle (3) can be steered or stolen and possibly also pivoted is arranged. ■ ■ 909821/0752 -9-