GB386315A - Microphonic apparatus for the transmission and reception of sound - Google Patents

Microphonic apparatus for the transmission and reception of sound

Info

Publication number
GB386315A
GB386315A GB1708331A GB1708331A GB386315A GB 386315 A GB386315 A GB 386315A GB 1708331 A GB1708331 A GB 1708331A GB 1708331 A GB1708331 A GB 1708331A GB 386315 A GB386315 A GB 386315A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
air
apertures
amplifier
lens
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
GB1708331A
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.)
CHRISTOPHER CLIVE LANGTON GREG
Original Assignee
CHRISTOPHER CLIVE LANGTON GREG
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 CHRISTOPHER CLIVE LANGTON GREG filed Critical CHRISTOPHER CLIVE LANGTON GREG
Priority to GB1708331A priority Critical patent/GB386315A/en
Publication of GB386315A publication Critical patent/GB386315A/en
Expired 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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/008—Transducers other than those covered by groups H04R9/00 - H04R21/00 using optical signals for detecting or generating sound

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

386,315. Microphones. LANGTON, C. C., 7, Richmond Gardens, Hendon, London. June 12, 1931, No. 17083. [Class 40 (iv).] Light from a source 1 is passed through a collimating lens 2 to a glass block 3 which divides the incident beam 4 into two beams 5, 6 which pass through apertures in a diaphragm 7 and through glass plates 8, 9. The beams after passing through apertures in a second diaphragm 10 fall on a glass block 11 and are recombined to form a single beam 12 which after passing through diaphragm 13, prism 14, and a lens system 15 is focussed on to a slit in a screen 16 behind which is a photo-electric cell 17 connected to an amplifier. In the path of the beam 5 is a stiff-walled tube 18 which protects the air inside from outside disturbances. Changes in pressure due to sound impulses in the air within the tube 18 relatively to the surrounding air, or in the latter when the pressure of air in the tube is kept constant, will cause variations in the order of interference in the recombined beam: The division of the original beam may be produced by a lens close to a diaphragm with two apertures, also a prism may be placed between the lens 2 and the block 3. The amplifier may be connected to.a loud-speaker or the cell may be connected to an amplifier which controls an optical: recording device such as is commonly used in the production of talking films.
GB1708331A 1931-06-12 1931-06-12 Microphonic apparatus for the transmission and reception of sound Expired GB386315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1708331A GB386315A (en) 1931-06-12 1931-06-12 Microphonic apparatus for the transmission and reception of sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1708331A GB386315A (en) 1931-06-12 1931-06-12 Microphonic apparatus for the transmission and reception of sound

Publications (1)

Publication Number Publication Date
GB386315A true GB386315A (en) 1933-01-12

Family

ID=10088950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1708331A Expired GB386315A (en) 1931-06-12 1931-06-12 Microphonic apparatus for the transmission and reception of sound

Country Status (1)

Country Link
GB (1) GB386315A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545340A (en) * 1950-02-15 1951-03-13 Gen Electric Method of measuring gas pressure in flames
US2568589A (en) * 1947-09-16 1951-09-18 Labhart Heinrich Apparatus for determining the course of the refractive index of an optically nonhomogeneous medium disposed in a cell, particularly an electrophoresis cell
US2601175A (en) * 1947-08-05 1952-06-17 Smith Francis Hughes Interference microscope
US2679183A (en) * 1950-10-10 1954-05-25 Donald R Buchele Differential interferometer
US2703033A (en) * 1950-02-22 1955-03-01 Lkb Produkter Fabriksaktiebola Optical arrangement for analysis of refractive index
US3625616A (en) * 1969-06-25 1971-12-07 Bendix Corp Interferometric pressure sensor
WO2008000007A1 (en) 2006-06-27 2008-01-03 Nxp B.V. Electroacoustic transducer
DE102014012364A1 (en) * 2014-08-25 2016-02-25 Microtech Gefell Gmbh Inertia-free A / D converter for determining the density of gas and optical signal processing equipment
US9641941B2 (en) 2008-09-12 2017-05-02 Xarion Laser Acoustics Gmbh Transducer system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2601175A (en) * 1947-08-05 1952-06-17 Smith Francis Hughes Interference microscope
US2568589A (en) * 1947-09-16 1951-09-18 Labhart Heinrich Apparatus for determining the course of the refractive index of an optically nonhomogeneous medium disposed in a cell, particularly an electrophoresis cell
US2545340A (en) * 1950-02-15 1951-03-13 Gen Electric Method of measuring gas pressure in flames
US2703033A (en) * 1950-02-22 1955-03-01 Lkb Produkter Fabriksaktiebola Optical arrangement for analysis of refractive index
US2679183A (en) * 1950-10-10 1954-05-25 Donald R Buchele Differential interferometer
US3625616A (en) * 1969-06-25 1971-12-07 Bendix Corp Interferometric pressure sensor
WO2008000007A1 (en) 2006-06-27 2008-01-03 Nxp B.V. Electroacoustic transducer
US8301029B2 (en) 2006-06-27 2012-10-30 Xarion Laser Acoustics Gmbh Electroacoustic transducer
US9641941B2 (en) 2008-09-12 2017-05-02 Xarion Laser Acoustics Gmbh Transducer system
DE102014012364A1 (en) * 2014-08-25 2016-02-25 Microtech Gefell Gmbh Inertia-free A / D converter for determining the density of gas and optical signal processing equipment
DE102014012364B4 (en) * 2014-08-25 2019-02-14 Microtech Gefell Gmbh Inertia-free A / D converter for determining the density of gas and optical signal processing equipment

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