NO891761L - Acoustic transducer with acoustic support, especially of the "WOOD'S HORN" type. - Google Patents

Acoustic transducer with acoustic support, especially of the "WOOD'S HORN" type.

Info

Publication number
NO891761L
NO891761L NO89891761A NO891761A NO891761L NO 891761 L NO891761 L NO 891761L NO 89891761 A NO89891761 A NO 89891761A NO 891761 A NO891761 A NO 891761A NO 891761 L NO891761 L NO 891761L
Authority
NO
Norway
Prior art keywords
acoustic
horn
wood
type
support
Prior art date
Application number
NO89891761A
Other languages
Norwegian (no)
Other versions
NO891761D0 (en
Inventor
Frederick Henry Kreisle Rambow
Original Assignee
Shell Int Research
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 Shell Int Research filed Critical Shell Int Research
Publication of NO891761D0 publication Critical patent/NO891761D0/en
Publication of NO891761L publication Critical patent/NO891761L/en

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
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Den uønskede, akustiske energi fra baksiden av en akustisk omvandler (25) absorberes fullstendig i en akustisk energifelle (30) son er utformet som et Wood's horn og er inns tept i et akustisk absorberende materiale (35). Omvandleren (25) og backingens. (30) impedanser kan ogsé matches nøyak-tig til hverandre, slik at frekvensbånd- . bredden akes.The unwanted acoustic energy from the back of an acoustic transducer (25) is completely absorbed in an acoustic energy trap (30) which is shaped like a Wood's horn and is embedded in an acoustic absorbing material (35). The converter (25) and the backing. (30) impedances can also be matched exactly to each other, so that frequency bands. width akes.

NO89891761A 1988-04-29 1989-04-27 Acoustic transducer with acoustic support, especially of the "WOOD'S HORN" type. NO891761L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18775488A 1988-04-29 1988-04-29

Publications (2)

Publication Number Publication Date
NO891761D0 NO891761D0 (en) 1989-04-27
NO891761L true NO891761L (en) 1989-10-30

Family

ID=22690329

Family Applications (1)

Application Number Title Priority Date Filing Date
NO89891761A NO891761L (en) 1988-04-29 1989-04-27 Acoustic transducer with acoustic support, especially of the "WOOD'S HORN" type.

Country Status (2)

Country Link
EP (1) EP0339746A3 (en)
NO (1) NO891761L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2743653A1 (en) * 2012-12-13 2014-06-18 Sick Ag Ultrasonic transducer and method for generating and/or detecting ultrasonic signals
WO2016108841A1 (en) * 2014-12-30 2016-07-07 Halliburton Energy Services, Inc. Adjustable acoustic transducers for a downhole tool
US20240118446A1 (en) * 2022-10-07 2024-04-11 Halliburton Energy Services, Inc. Wedge-Cut Backing Of Acoustic Transducer For Improved Attenuation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB705080A (en) * 1951-06-06 1954-03-10 Marconi Wireless Telegraph Co Improvements in or relating to ultra-sonic wave absorption apparatus
GB869582A (en) * 1957-08-19 1961-05-31 Chirana Praha Mechanical damping member for an electroacoustic transducer
US3403271A (en) * 1966-02-09 1968-09-24 Hewlett Packard Co Ultrasonic transducer with absorptive load

Also Published As

Publication number Publication date
EP0339746A3 (en) 1991-07-03
NO891761D0 (en) 1989-04-27
EP0339746A2 (en) 1989-11-02

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