GB521928A - Apparatus for training personnel in sound detection - Google Patents
Apparatus for training personnel in sound detectionInfo
- Publication number
- GB521928A GB521928A GB34628/38A GB3462838A GB521928A GB 521928 A GB521928 A GB 521928A GB 34628/38 A GB34628/38 A GB 34628/38A GB 3462838 A GB3462838 A GB 3462838A GB 521928 A GB521928 A GB 521928A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loud
- pupil
- speaker
- sound
- record
- 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
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Stereophonic System (AREA)
- Stereophonic Arrangements (AREA)
Abstract
521,928. Locating sounds. SOC. ANON. OFFICINE GALILEO. Nov. 28, 1938, Nos. 34628 and 34629. Convention dates, Dec. 15, 1937, and July 18, 1938. [Class 118 (ii)] In an apparatus for training pupils in binaural sound detection, a loud-speaker c is mounted in a conduit a connecting with the pupil's, earpieces r and is movable along the slide by the instructor rotating the hand-wheel n<SP>1</SP> which rotates the differential g, the pupil returning the loud-speaker to its central position by the handwheel h. Extraneous noises are fed into the conduit by loud-speakers o, p. The loudspeakers may be operated by any kind of sound record. In the arrangement shown, the supposed course of an aircraft is plotted on a chart s carried by a motor-driven drum, and the instructor controls the position of the loudspeaker so that pointer v follows the course. The result of the'pupil's control is indicated by pointer p which should be maintained central. As an alternative to the chart, suitable cams may be provided to give a desired course movement to the loud-speaker. Variation in sound intensity to simulate distance is obtained by rheostat x and irregular variation may be provided by other rheostats, or in the case of a sound film record, a shutter of variable transparency may be used. A counter may be used to record the number of errors made by the pupil.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT521928X | 1937-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521928A true GB521928A (en) | 1940-06-04 |
Family
ID=11276518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34628/38A Expired GB521928A (en) | 1937-12-15 | 1938-11-28 | Apparatus for training personnel in sound detection |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB521928A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2471368A (en) * | 1942-09-07 | 1949-05-24 | Arenco Ab | Gunfire control training apparatus |
| US2809445A (en) * | 1943-04-19 | 1957-10-15 | Henry E Hartig | Advanced bearing teacher |
-
1938
- 1938-11-28 GB GB34628/38A patent/GB521928A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2471368A (en) * | 1942-09-07 | 1949-05-24 | Arenco Ab | Gunfire control training apparatus |
| US2809445A (en) * | 1943-04-19 | 1957-10-15 | Henry E Hartig | Advanced bearing teacher |
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