FR1253221A - Filtres acoustiques pour conduits d'air - Google Patents

Filtres acoustiques pour conduits d'air

Info

Publication number
FR1253221A
FR1253221A FR764271A FR764271A FR1253221A FR 1253221 A FR1253221 A FR 1253221A FR 764271 A FR764271 A FR 764271A FR 764271 A FR764271 A FR 764271A FR 1253221 A FR1253221 A FR 1253221A
Authority
FR
France
Prior art keywords
air ducts
acoustic filters
acoustic
filters
ducts
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
FR764271A
Other languages
English (en)
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.)
Pittsburgh Corning LLC
Original Assignee
Pittsburgh Corning LLC
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
Priority claimed from GB1174958A external-priority patent/GB845799A/en
Application filed by Pittsburgh Corning LLC filed Critical Pittsburgh Corning LLC
Priority to FR764271A priority Critical patent/FR1253221A/fr
Application granted granted Critical
Publication of FR1253221A publication Critical patent/FR1253221A/fr
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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8414—Sound-absorbing elements with non-planar face, e.g. curved, egg-crate shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR764271A 1958-04-14 1958-04-28 Filtres acoustiques pour conduits d'air Expired FR1253221A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR764271A FR1253221A (fr) 1958-04-14 1958-04-28 Filtres acoustiques pour conduits d'air

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1174958A GB845799A (en) 1958-04-14 1958-04-14 Acoustic filters for air ducts
FR764271A FR1253221A (fr) 1958-04-14 1958-04-28 Filtres acoustiques pour conduits d'air

Publications (1)

Publication Number Publication Date
FR1253221A true FR1253221A (fr) 1961-02-10

Family

ID=32395567

Family Applications (1)

Application Number Title Priority Date Filing Date
FR764271A Expired FR1253221A (fr) 1958-04-14 1958-04-28 Filtres acoustiques pour conduits d'air

Country Status (1)

Country Link
FR (1) FR1253221A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003782A1 (fr) * 1986-11-29 1988-06-02 Hoffman Medizinische Technik Gmbh Procede et dispositif pour eliminer les effets traumatiques dus a la destruction de calculs renaux

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003782A1 (fr) * 1986-11-29 1988-06-02 Hoffman Medizinische Technik Gmbh Procede et dispositif pour eliminer les effets traumatiques dus a la destruction de calculs renaux

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