GB579646A - Improvements in devices for the transmission or reception of energy of the nature of sound-energy - Google Patents

Improvements in devices for the transmission or reception of energy of the nature of sound-energy

Info

Publication number
GB579646A
GB579646A GB1260941A GB1260941A GB579646A GB 579646 A GB579646 A GB 579646A GB 1260941 A GB1260941 A GB 1260941A GB 1260941 A GB1260941 A GB 1260941A GB 579646 A GB579646 A GB 579646A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
energy
sound
reception
nature
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
GB1260941A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB1260941A priority Critical patent/GB579646A/en
Publication of GB579646A publication Critical patent/GB579646A/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)
  • Aerials With Secondary Devices (AREA)

Abstract

579,646. Sound directing appliances. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and ROUND, H. J. Sept. 29, 1941, No. 12609. [Class 13] [Also in Group XXXIX] A sound or like transmitting or receiving ararrangement comprising a diaphragm d at the focus of a parabolic reflector m is provided with an additional reflector so arranged that it reflects back on tc the main mirror energy that would otherwise be radiated directly in undesired directions. The additional reflector may take the form of a flat plate or of a cup-shaped member c which may practically surround the diaphragm, Fig. 5 (not shown), or of a logarithmic horn, Fig. 7 (not shown). The diameter of the diaphragm may be one half or one whole wave-length, and the distance between the diaphragm and the auxiliary reflecting member may be an integral number of half wave-lengths.
GB1260941A 1941-09-29 1941-09-29 Improvements in devices for the transmission or reception of energy of the nature of sound-energy Expired GB579646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1260941A GB579646A (en) 1941-09-29 1941-09-29 Improvements in devices for the transmission or reception of energy of the nature of sound-energy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1260941A GB579646A (en) 1941-09-29 1941-09-29 Improvements in devices for the transmission or reception of energy of the nature of sound-energy

Publications (1)

Publication Number Publication Date
GB579646A true GB579646A (en) 1946-08-12

Family

ID=10007790

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1260941A Expired GB579646A (en) 1941-09-29 1941-09-29 Improvements in devices for the transmission or reception of energy of the nature of sound-energy

Country Status (1)

Country Link
GB (1) GB579646A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913871A1 (en) * 1999-03-26 2000-09-28 Siemens Ag Device for generating sound waves with a given sound lobe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913871A1 (en) * 1999-03-26 2000-09-28 Siemens Ag Device for generating sound waves with a given sound lobe

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