GB386315A - Microphonic apparatus for the transmission and reception of sound - Google Patents
Microphonic apparatus for the transmission and reception of soundInfo
- 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
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.
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)
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 |
-
1931
- 1931-06-12 GB GB1708331A patent/GB386315A/en not_active Expired
Cited By (11)
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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