BE871925A - SOUND ABSORBING STRUCTURE - Google Patents

SOUND ABSORBING STRUCTURE

Info

Publication number
BE871925A
BE871925A BE191665A BE191665A BE871925A BE 871925 A BE871925 A BE 871925A BE 191665 A BE191665 A BE 191665A BE 191665 A BE191665 A BE 191665A BE 871925 A BE871925 A BE 871925A
Authority
BE
Belgium
Prior art keywords
sound absorbing
absorbing structure
sound
absorbing
Prior art date
Application number
BE191665A
Other languages
French (fr)
Original Assignee
Elektronikcentralen
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 Elektronikcentralen filed Critical Elektronikcentralen
Publication of BE871925A publication Critical patent/BE871925A/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0035—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with undulated surfaces
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
    • E01F8/0076—Cellular, e.g. as wall facing
    • E01F8/0082—Cellular, e.g. as wall facing with damping material
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0094—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic constructions for generation of phase shifting
    • 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
BE191665A 1977-11-10 1978-11-10 SOUND ABSORBING STRUCTURE BE871925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK498477A DK140951B (en) 1977-11-10 1977-11-10 Sound-absorbing structure.

Publications (1)

Publication Number Publication Date
BE871925A true BE871925A (en) 1979-03-01

Family

ID=8138412

Family Applications (1)

Application Number Title Priority Date Filing Date
BE191665A BE871925A (en) 1977-11-10 1978-11-10 SOUND ABSORBING STRUCTURE

Country Status (2)

Country Link
BE (1) BE871925A (en)
DK (1) DK140951B (en)

Also Published As

Publication number Publication date
DK140951C (en) 1980-05-27
DK498477A (en) 1979-05-11
DK140951B (en) 1979-12-10

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ELEKTRONIKCENTRALEN

Effective date: 19881130