GB413503A - Improvements in echo-sounding apparatus - Google Patents

Improvements in echo-sounding apparatus

Info

Publication number
GB413503A
GB413503A GB21986/33A GB2198633A GB413503A GB 413503 A GB413503 A GB 413503A GB 21986/33 A GB21986/33 A GB 21986/33A GB 2198633 A GB2198633 A GB 2198633A GB 413503 A GB413503 A GB 413503A
Authority
GB
United Kingdom
Prior art keywords
horn
echo
wave length
rue
aug
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
GB21986/33A
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.)
LOUIS AUGUSTE MARIE JOSEPH LAB
RAYMQND DUBOIS
Original Assignee
LOUIS AUGUSTE MARIE JOSEPH LAB
RAYMQND DUBOIS
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 LOUIS AUGUSTE MARIE JOSEPH LAB, RAYMQND DUBOIS filed Critical LOUIS AUGUSTE MARIE JOSEPH LAB
Publication of GB413503A publication Critical patent/GB413503A/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
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching

Landscapes

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

Abstract

413,503. Sound-directing appliances. LABOUREUR, L. A. M. J., 19, Rue Bonaparte, Paris, and DUBOIS, R., 3, Rue Michelet, AsniÞres, Seine, both in France. Aug. 4, 1933, No. 21986. Convention date, Aug. 4, 1932. [Class 13.] A sound-collecting device for echo-sounding apparatus comprises a horn a of tapered form of which the larger base has two dimensions one being at least twice as great as the wave length of the echo note to be received and the other being, at most, half the wave length. Partitions d, Figs. 3 and 4, are arranged inside the horn which is made sufficiently long to prevent the difference in length of the compartments so formed from exceeding half a wave length. The receiving microphone c is attached to the smaller end b of the horn which is arranged with the larger dimension of the mouth parallel to the direction of propagation of disturbing sounds, e.g. due to the engine of an aircraft carrying the receiver.
GB21986/33A 1932-08-04 1933-08-04 Improvements in echo-sounding apparatus Expired GB413503A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR42885T 1932-08-04

Publications (1)

Publication Number Publication Date
GB413503A true GB413503A (en) 1934-07-19

Family

ID=8678909

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21986/33A Expired GB413503A (en) 1932-08-04 1933-08-04 Improvements in echo-sounding apparatus

Country Status (2)

Country Link
FR (1) FR42885E (en)
GB (1) GB413503A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3907502A1 (en) * 2020-05-08 2021-11-10 ABB Schweiz AG Sensing arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3907502A1 (en) * 2020-05-08 2021-11-10 ABB Schweiz AG Sensing arrangement
US11719737B2 (en) 2020-05-08 2023-08-08 Abb Schweiz Ag Sensing arrangement

Also Published As

Publication number Publication date
FR42885E (en) 1933-11-15

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