GB487415A - Improvements in or connected with sound locators - Google Patents

Improvements in or connected with sound locators

Info

Publication number
GB487415A
GB487415A GB3558636A GB3558636A GB487415A GB 487415 A GB487415 A GB 487415A GB 3558636 A GB3558636 A GB 3558636A GB 3558636 A GB3558636 A GB 3558636A GB 487415 A GB487415 A GB 487415A
Authority
GB
United Kingdom
Prior art keywords
sound
aperture
horn
diaphragm
reduced
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
GB3558636A
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.)
Thales Optronics Ltd
Original Assignee
Thales Optronics Ltd
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 Thales Optronics Ltd filed Critical Thales Optronics Ltd
Priority to GB3558636A priority Critical patent/GB487415A/en
Publication of GB487415A publication Critical patent/GB487415A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

487,415. Sound directing appliances. BARR & STROUD, Ltd., and FRENCH, J. W. Dec. 29, 1936, No. 35586. [Class 13] A sound-locating device comprises a paraboloidal horn A for receiving and concentrating sound, a sound-transmitting tube B and a diaphragm C of variable aperture at the junction of the horn A and tube B. To obtain the approximate direction of the sound source, the device is utilized with the aperture D fully opened and its position is varied until the sound intensity appears to be at a maximum. The aperture D is then reduced, as indicated in Fig. 4, and the device is adjusted until the sound is again at its maximum intensity, i.e. is concentrated at the reduced aperture D. The diaphragm C, which is preferably of the iris type, may be located above, below, or at the focal plane of the horn A.
GB3558636A 1936-12-29 1936-12-29 Improvements in or connected with sound locators Expired GB487415A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3558636A GB487415A (en) 1936-12-29 1936-12-29 Improvements in or connected with sound locators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3558636A GB487415A (en) 1936-12-29 1936-12-29 Improvements in or connected with sound locators

Publications (1)

Publication Number Publication Date
GB487415A true GB487415A (en) 1938-06-21

Family

ID=10379378

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3558636A Expired GB487415A (en) 1936-12-29 1936-12-29 Improvements in or connected with sound locators

Country Status (1)

Country Link
GB (1) GB487415A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320466A2 (en) * 1987-12-11 1989-06-14 Consiglio Nazionale Delle Ricerche Echographic technique-based apparatus to detect structure and anomalies of the subsoil and/or sea bottom and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320466A2 (en) * 1987-12-11 1989-06-14 Consiglio Nazionale Delle Ricerche Echographic technique-based apparatus to detect structure and anomalies of the subsoil and/or sea bottom and the like
EP0320466A3 (en) * 1987-12-11 1990-01-24 Consiglio Nazionale Delle Ricerche Echographic technique-based method and apparatus to detect structure and anomalies of the subsoil and/or sea bottom and the like

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