GB309930A - An improved method and means for recording or reproducing sound - Google Patents
An improved method and means for recording or reproducing soundInfo
- Publication number
- GB309930A GB309930A GB3408827A GB3408827A GB309930A GB 309930 A GB309930 A GB 309930A GB 3408827 A GB3408827 A GB 3408827A GB 3408827 A GB3408827 A GB 3408827A GB 309930 A GB309930 A GB 309930A
- Authority
- GB
- United Kingdom
- Prior art keywords
- recording
- diaphragms
- light
- sound
- improved method
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
309,930. Neale, J. Dec. 16, 1927. No Patent granted (Sealing fee not paid). Optical apparatus.- A device for recording or transmitting sound by means of an acoustically -influenced beam of light comprises two parallel diaphragms A, B between which the light is passed, the diaphragms having opposed projections E which move laterally across the beam. The diaphragms are mounted in a casing closed at the back and having a sound-receiving portion H. The light passes through diametrically opposed apertures (not shown) having transparent covers, and on emerging falls on a recording film or on lightsensitive members of a Wheatstone bridge device, in conjunction with which a loud-speaker may be used. Specifications 284,942 and 307,086, [both in Class 40 (iii), Telegraphs, Electric], are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3408827A GB309930A (en) | 1927-12-16 | 1927-12-16 | An improved method and means for recording or reproducing sound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3408827A GB309930A (en) | 1927-12-16 | 1927-12-16 | An improved method and means for recording or reproducing sound |
Publications (1)
Publication Number | Publication Date |
---|---|
GB309930A true GB309930A (en) | 1929-04-16 |
Family
ID=10361223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3408827A Expired GB309930A (en) | 1927-12-16 | 1927-12-16 | An improved method and means for recording or reproducing sound |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB309930A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2195217A (en) * | 1986-08-20 | 1988-03-30 | Univ Dundee | Acoustic-optic transducer |
GB2233467A (en) * | 1989-06-26 | 1991-01-09 | Plessey Co Plc | An optical microphone |
-
1927
- 1927-12-16 GB GB3408827A patent/GB309930A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2195217A (en) * | 1986-08-20 | 1988-03-30 | Univ Dundee | Acoustic-optic transducer |
GB2233467A (en) * | 1989-06-26 | 1991-01-09 | Plessey Co Plc | An optical microphone |
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