FR1241787A - Variable impedance acoustic resonator - Google Patents

Variable impedance acoustic resonator

Info

Publication number
FR1241787A
FR1241787A FR802320A FR802320A FR1241787A FR 1241787 A FR1241787 A FR 1241787A FR 802320 A FR802320 A FR 802320A FR 802320 A FR802320 A FR 802320A FR 1241787 A FR1241787 A FR 1241787A
Authority
FR
France
Prior art keywords
variable impedance
acoustic resonator
impedance acoustic
resonator
variable
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
FR802320A
Other languages
French (fr)
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.)
Automobiles Citroen SA
Original Assignee
Andre Citroen SA
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 Andre Citroen SA filed Critical Andre Citroen SA
Priority to FR802320A priority Critical patent/FR1241787A/en
Priority to BE593636A priority patent/BE593636A/en
Priority to LU39035D priority patent/LU39035A1/xx
Priority to GB2686660A priority patent/GB914274A/en
Application granted granted Critical
Publication of FR1241787A publication Critical patent/FR1241787A/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
    • G10K11/04—Acoustic filters ; Acoustic resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/16—Vortex devices, i.e. devices in which use is made of the pressure drop associated with vortex motion in a fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/26—Devices characterised by the use of fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
FR802320A 1959-08-07 1959-08-07 Variable impedance acoustic resonator Expired FR1241787A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR802320A FR1241787A (en) 1959-08-07 1959-08-07 Variable impedance acoustic resonator
BE593636A BE593636A (en) 1959-08-07 1960-08-01 Variable impecance acoustic resonator
LU39035D LU39035A1 (en) 1959-08-07 1960-08-02
GB2686660A GB914274A (en) 1959-08-07 1960-08-03 Improvements in or relating to variable impedance acoustic resonators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR802320A FR1241787A (en) 1959-08-07 1959-08-07 Variable impedance acoustic resonator

Publications (1)

Publication Number Publication Date
FR1241787A true FR1241787A (en) 1960-09-23

Family

ID=8718103

Family Applications (1)

Application Number Title Priority Date Filing Date
FR802320A Expired FR1241787A (en) 1959-08-07 1959-08-07 Variable impedance acoustic resonator

Country Status (4)

Country Link
BE (1) BE593636A (en)
FR (1) FR1241787A (en)
GB (1) GB914274A (en)
LU (1) LU39035A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228356C2 (en) * 1992-08-26 1995-10-19 Daimler Benz Aerospace Ag Cavity resonator for noise reduction

Also Published As

Publication number Publication date
GB914274A (en) 1963-01-02
BE593636A (en) 1960-12-01
LU39035A1 (en) 1960-10-03

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