Menetelmä ja laitteisto äänen vaimentamiseksi

The invention relates to a method and an apparatus for attenuating sound, comprising measuring at least one component (p, ux) of a sound field and producing attenuation sound on the basis of the measurement result by means of at least one actuator (4). The measurement result is adjusted by means of...

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Bibliographic Details
Main Authors UOSUKAINEN,SEPPO, NYKAENEN,HANNU, LEKKALA,JUKKA, KIRJAVAINEN,KARI
Format Patent
LanguageFinnish
Swedish
Published 15.09.2000
Edition7
Subjects
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PHYSICS
SOUND-PRODUCING DEVICES
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Summary:The invention relates to a method and an apparatus for attenuating sound, comprising measuring at least one component (p, ux) of a sound field and producing attenuation sound on the basis of the measurement result by means of at least one actuator (4). The measurement result is adjusted by means of the approximation of the impedance or admittance of the sound field, and the approximation is adjusted on the measured residual sound pressure (pres). This allows the attenuation of sound to be implemented in a reasonably simple and effective way.
Bibliography:Application Number: FI19960004636