DE587592C - Electromagnetic microphone - Google Patents

Electromagnetic microphone

Info

Publication number
DE587592C
DE587592C DENDAT587592D DE587592DD DE587592C DE 587592 C DE587592 C DE 587592C DE NDAT587592 D DENDAT587592 D DE NDAT587592D DE 587592D D DE587592D D DE 587592DD DE 587592 C DE587592 C DE 587592C
Authority
DE
Germany
Prior art keywords
microphone
electromagnetic microphone
metallic
electromagnetic
horn
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
DENDAT587592D
Other languages
German (de)
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.)
CARL WARMBACH
Original Assignee
CARL WARMBACH
Publication date
Application granted granted Critical
Publication of DE587592C publication Critical patent/DE587592C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/28—Angle modulation by means of variable impedance using variable impedance driven mechanically or acoustically

Landscapes

  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Description

Die bisher bekannten Mikrophone haben Eigenschwingung und verzerren die Töne. Zur Unterdrückung dieser Erscheinung müssen umständliche und zusätzliche Schaltungen angewandt werden. Das Mikrophon der Erfindung ist frei von Eigenschwingungen. Es beruht auf der Erscheinung, daß sich die Energie eines elektromagnetischen Spulenfeldes mit der Dichte des Mediums, in dem es ausgebildet ist, trägheitslos und empfindlich ändert. Bei einer Senderschaltung, wie eine solche beispielsweise in Fig. 1 dargestellt ist, kann eine der Spulen 1, 2 oder 3 besprochen werden. Dazu wird über die zu besprechende Spule 'ein nicht metallischer Schalltrichter 4 nach Fig. 2 so geschoben, daß durch die Schallwellen sowohl das innere als auch ein Teil des äußeren Feldes erfaßt wird.The microphones known up to now have natural oscillation and distort the tones. To suppress this phenomenon, cumbersome and additional circuits are required can be applied. The microphone of the invention is free from natural vibrations. It is based on the phenomenon that the energy of an electromagnetic coil field corresponds to the density of the medium in which it is is trained, changes inertia and sensitive. With a transmitter circuit, such as a such as is shown in Fig. 1, for example, one of the coils 1, 2 or 3 can be discussed will. For this purpose, a non-metallic horn 4 is placed over the coil to be discussed according to Fig. 2 so pushed that through the sound waves both the inner and a Part of the external field is detected.

Der Schalltrichter kann mit und ohne dieThe bell can be used with or without the

nicht metallische Membran 5 benutzt werden. 20 Verstärkt wird die Wirkung, wenn das dem Trichter entgegengesetzte Ende 6 der Spule durch eine nicht metallische Wand abgeschlossen ist.non-metallic membrane 5 can be used. 20 The effect is intensified if the Funnel opposite end 6 of the coil closed by a non-metallic wall is.

Claims (2)

Patentansprüche:Patent claims: 1. Elektromagnetisches Mikrophon, dadurch gekennzeichnet, daß es aus einer 'der Spulen (i, 2, 3) eines Senders besteht und daß ein nicht metallischer Schalltrichter (4) die Spule derart umgibt, daß das innere und ein Teil des äußeren Spulenfeldes den Schallwellen ausgesetzt ist.1. Electromagnetic microphone, characterized in that it consists of a 'the coils (i, 2, 3) of a transmitter and that a non-metallic horn (4) surrounds the coil in such a way that the inner and part of the outer coil field exposed to sound waves. 2. Mikrophon nach Anspruch 1, dadurch gekennzeichnet, daß das dem Schalltrichter abgewandte Ende des Spulenkörpers durch eine nicht metallische Wand (6) abgeschlossen ist.2. Microphone according to claim 1, characterized in that the horn remote end of the bobbin is closed by a non-metallic wall (6). Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DENDAT587592D Electromagnetic microphone Expired DE587592C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE587592T

Publications (1)

Publication Number Publication Date
DE587592C true DE587592C (en) 1933-11-06

Family

ID=6572237

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT587592D Expired DE587592C (en) Electromagnetic microphone

Country Status (1)

Country Link
DE (1) DE587592C (en)

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