DE4217767C1 - - Google Patents

Info

Publication number
DE4217767C1
DE4217767C1 DE19924217767 DE4217767A DE4217767C1 DE 4217767 C1 DE4217767 C1 DE 4217767C1 DE 19924217767 DE19924217767 DE 19924217767 DE 4217767 A DE4217767 A DE 4217767A DE 4217767 C1 DE4217767 C1 DE 4217767C1
Authority
DE
Germany
Prior art keywords
waveguide
medium
openings
chamber
sound
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 - Fee Related
Application number
DE19924217767
Other languages
German (de)
English (en)
Inventor
Oskar Dr. 8000 Muenchen De Bschorr
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.)
Airbus Defence and Space GmbH
Original Assignee
Deutsche Aerospace AG
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 Deutsche Aerospace AG filed Critical Deutsche Aerospace AG
Priority to DE19924217767 priority Critical patent/DE4217767C1/de
Priority to GB9310653A priority patent/GB2271387B/en
Priority to FR9306470A priority patent/FR2691828B1/fr
Application granted granted Critical
Publication of DE4217767C1 publication Critical patent/DE4217767C1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
DE19924217767 1992-05-29 1992-05-29 Expired - Fee Related DE4217767C1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19924217767 DE4217767C1 (fr) 1992-05-29 1992-05-29
GB9310653A GB2271387B (en) 1992-05-29 1993-05-24 Noise reduction by means of acoustic feedback
FR9306470A FR2691828B1 (fr) 1992-05-29 1993-05-28 Dispositif de réduction du bruit par court-circuit acoustique.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924217767 DE4217767C1 (fr) 1992-05-29 1992-05-29

Publications (1)

Publication Number Publication Date
DE4217767C1 true DE4217767C1 (fr) 1993-08-26

Family

ID=6459981

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924217767 Expired - Fee Related DE4217767C1 (fr) 1992-05-29 1992-05-29

Country Status (3)

Country Link
DE (1) DE4217767C1 (fr)
FR (1) FR2691828B1 (fr)
GB (1) GB2271387B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10146121B4 (de) * 2001-09-19 2004-01-08 Ford Global Technologies, Inc., Dearborn Verfahren zur Bestimmung des Körperschall- und des Luftschallanteils eines Motorengeräusches

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1321073A (en) * 1970-06-18 1973-06-20 Secr Defence Acoustic attenuators

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB618224A (en) * 1947-03-18 1949-02-17 Bristol Aeroplane Co Ltd Improvements in or relating to apparatus for preventing or reducing the formation of ice on the air ducts of gas turbine engines
GB935119A (en) * 1960-12-05 1963-08-28 Rolls Royce Improvements relating to the silencing of gas turbine engines
DE3020830A1 (de) * 1980-06-02 1981-12-10 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Koinzidenzschalldaempfer
FR2613773B1 (fr) * 1987-04-08 1990-11-30 Snecma Panneau acoustique pour garniture insonorisante et turboreacteur comportant une telle garniture
SE501995C2 (sv) * 1988-11-18 1995-07-10 Tord Goeran Kaarfalk Anordning för reducering av transmissionsljud
DE4012094A1 (de) * 1990-04-14 1991-10-17 Schottel Werft Vorrichtung zum schutz von unter wasser befindlichen koerpern gegen sonar-ortung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1321073A (en) * 1970-06-18 1973-06-20 Secr Defence Acoustic attenuators

Also Published As

Publication number Publication date
GB9310653D0 (en) 1993-07-07
GB2271387B (en) 1995-08-16
GB2271387A (en) 1994-04-13
FR2691828A1 (fr) 1993-12-03
FR2691828B1 (fr) 1995-04-21

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DAIMLER-BENZ AEROSPACE AKTIENGESELLSCHAFT, 80804 M

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AEROSPACE AKTIENGESELLSCHAFT, 8099

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AEROSPACE AG, 85521 OTTOBRUNN, DE

8327 Change in the person/name/address of the patent owner

Owner name: EADS DEUTSCHLAND GMBH, 85521 OTTOBRUNN, DE

8339 Ceased/non-payment of the annual fee